TY - CONF TI - CO2 enrichment responses of chrysanthemum, cucumber and tomato: photosynthesis, growth, nutrient concentrations and yield AU - Peet, M.M. AU - Willits, D.H. AU - Tripp, K.E. AU - Kroen, W.K. AU - Pharr, D.M. AU - Depa, M.A. AU - Nelson, P.V. T2 - Indo-US Workshop C2 - 1991/// C3 - Impact of global climatic changes on photosynthesis and plant productivity. Proceedings of the Indo-US Workshop held on Jan. 8-12 1991 at New Delhi, India CY - New Delhi, India DA - 1991/// PY - 1991/1/8/ PB - FERRO. Oxford & IBH Publishing Co. Pvt. Ltd ER - TY - JOUR TI - High CO2 concentration alters carbohydrate partitioning in favor of shoots in tomato AU - Kroen, W.K. AU - Peet, M.M. T2 - Plant Physiology DA - 1991/// PY - 1991/// VL - 96 IS - Suppl. SP - 101 ER - TY - JOUR TI - Tomato fruit cracking: cultural, environmental, developmental and genetic pieces of the puzzle AU - Peet, M.M. AU - Willits, D.H. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 SP - 779 ER - TY - JOUR TI - Effect of salt-shocks and macronutrient concentration on tomato fruit quality and prediction by pre-flower leaf organic acid content AU - Niedziela, C.E., Jr. AU - Nelson, P.V. AU - Peet, M.M. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 SP - 703 ER - TY - NEWS TI - Tomato Fruit Cracking: Myth, Mystery and some Facts T2 - North Carolina Greenhouse Vegetable Growers’ Association Newsletter PY - 1991/3// ER - TY - MGZN TI - The when, where and why of fruit cracking in tomato AU - Peet, M.M. T2 - NC Tomato News DA - 1991/4// PY - 1991/4// PB - North Carolina Tomato Growers Association ER - TY - CHAP TI - CO2 enrichment responses of chrysanthemum, cucumber and tomato: photosynthesis, growth, nutrient concentrations and yield AU - Peet, M.M. AU - Willits, D.H. AU - Tripp, K.E. AU - Kroen, W.K. AU - Pharr, D.M. AU - Depa, M.A. AU - Nelson, P.V. T2 - Proceedings on the Impact of Global Climatic Changes on Photosynthesis and Plant Productivity, New Delhi, India PY - 1991/// SP - 193-212 PB - Oxford & IBH Publishing Co. Pvt. Ltd ER - TY - CONF TI - A model for greenhouse cooling AU - Willits, D.H. AU - Peet, M.M. T2 - American Society of Agricultural Engineers (ASAE) Meeting C2 - 1991/// CY - Albuquerque, New Mexico DA - 1991/// PY - 1991/6/23/ ER - TY - JOUR TI - Host‐plant resistance to insects in cucurbits—germplasm resources, genetics and breeding AU - Dhillon, N. P. S. AU - Wehner, T. C. T2 - Tropical Pest Management AB - Abstract Cucurbits are important crops for both staple and dessert foods. Past reviews have not covered insect resistance in cucurbits thoroughly, especially since much work has been done recently. Screening methods make a large difference in the efficiency of selection for resistance to insects. Resistance of cultigens should be evaluated using several biotypes of each insect being evaluated, and efficient test conditions with good control of environment. If possible, laboratory tests should be used to improve the repeatability and to reduce experimental error. Resistance to insects has been identified in cucurbits. For example, muskmelons have been identified that have resistance to melon aphid and red pumpkin beetle. On the other hand, resistance to pickleworm has not been identified after screening hundreds of cucumber cultigens. Conclusions drawn on the role of cucurbitacins in insect resistance to cucurbits are not unanimous. Studies on the genetic control of resistance in cucurbits indicate that there are at least 13 crop‐insect cases where there is heritable resistance. With greater emphasis in cucurbit breeding programmes, multiple insect resistance should be obtainable in many of the cucurbit species. DA - 1991/1// PY - 1991/1// DO - 10.1080/09670879109371628 VL - 37 IS - 4 SP - 421-428 J2 - Tropical Pest Management LA - en OP - SN - 0143-6147 UR - http://dx.doi.org/10.1080/09670879109371628 DB - Crossref KW - CUCURBITACEAE KW - ENTOMOLOGY KW - INSECT RESISTANCE ER - TY - JOUR TI - In Vitro Propagation of the Erect Thornless `Navaho' Blackberry AU - Fernandez, Gina E. AU - Clark, John R. T2 - HortScience DA - 1991/9// PY - 1991/9// DO - 10.21273/hortsci.26.9.1219 VL - 26 IS - 9 SP - 1219 OP - SN - 0018-5345 2327-9834 UR - http://dx.doi.org/10.21273/hortsci.26.9.1219 DB - Crossref KW - RUBUS-SPP KW - VEGETATIVE PROPAGATION ER - TY - JOUR TI - Effect of Seedcoat Manipulation on the Germination of Stenospermocarpic Grape Embryos Cultured in Ovulo AU - Fernandez, Gina E. AU - Clark, John R. AU - Moore, J.N. T2 - HortScience DA - 1991/9// PY - 1991/9// DO - 10.21273/hortsci.26.9.1220 VL - 26 IS - 9 SP - 1220 OP - SN - 0018-5345 2327-9834 UR - http://dx.doi.org/10.21273/hortsci.26.9.1220 DB - Crossref KW - VITIS-SPP KW - FRUIT BREEDING ER - TY - JOUR TI - Cold Injury of Southern Blueberries as a Function of Germplasm and Season of Flower Bud Development AU - Patten, Kim AU - Neuendorff, Elizabeth AU - Nimr, Gary AU - Clark, John R. AU - Fernandez, Gina T2 - HortScience AB - The relative tolerance of flower buds and flowers of southern highbush blueberry (Vaccinium spp.) to cold damage was compared to rabbiteye (Vaccinium ashei Reade) and highbush blueberry (Vaccinium corymbosum L.). For similar stages of floral bud development, southern highbush and highbush cultivars had less winter freeze and spring frost damage than rabbiteye cultivars. Cold damage increased linearly with stage of flower bud development. Small fruit were more sensitive to frost damage than open flowers. Rabbiteye blueberry flower buds formed during the fall growth flush were more hardy than buds formed during the spring growth flush, regardless of cultivar or stage of development. DA - 1991/1// PY - 1991/1// DO - 10.21273/hortsci.26.1.18 VL - 26 IS - 1 SP - 18-20 OP - SN - 0018-5345 2327-9834 UR - http://dx.doi.org/10.21273/hortsci.26.1.18 DB - Crossref KW - RABBITEYE BLUEBERRY KW - SOUTHERN HIGHBUSH KW - LOW-CHILL HIGHBUSH KW - VACCINIUM-ASHEI KW - FROST TOLERANCE KW - FREEZE DAMAGE ER - TY - CHAP TI - Jack Pine (Pinus banksiana Lamb.) AU - Chesick, E. E. AU - Bergmann, B. A. T2 - Biotechnology in Agriculture and Forestry AB - Jack pine (Pinus banksiana Lamb.) (Fig. 1), an economically important timber species in northern North America, is used for pulp, poles, and lumber. The species ranks first among conifers for pulpwood production in the Great Lake States of the United States of America and second only to black spruce [Picea mariana (Mill) P.B.S.] in volume harvested in Canada (Reimenschneider 1982; Moore 1984; Yeatman 1984). It is drought-resistant, extremely shade intolerant, and grows on a wide variety of sites. Performance is best on sandy loam or clay loam soils (Moore 1984). On dry, sandy, low-fertility sites where few other tree species will grow, it can be considered a climax species (Benzie 1977). Early growth is rapid and in the Great Lake States on good sites with short rotations it can produce as much pulpwood by weight as red pine (Pinus resinosa Ait.) (Reimenschneider 1982; Rudolph and Yeatman 1982). PY - 1991/// DO - 10.1007/978-3-662-13231-9_15 SP - 241-253 OP - PB - Springer Berlin Heidelberg SN - 9783642080937 9783662132319 UR - http://dx.doi.org/10.1007/978-3-662-13231-9_15 DB - Crossref ER - TY - JOUR TI - Turgor maintenance in leaves and roots of 'Colt' cherry trees in response to water stress AU - Ranney, T.G. AU - Bassuk, N.L. AU - Whitlow, T.H. T2 - Journal of Horticulture Science DA - 1991/// PY - 1991/// VL - 66 SP - 381–378 ER - TY - CONF TI - The effect of organic soil amendments on the growth and development of Kalmia latifolia AU - Bir, R.E. AU - Ranney, T.G. C2 - 1991/// C3 - Proceedings of the International Plant Propagators’ Society DA - 1991/// VL - 41 SP - 311–314 ER - TY - CONF TI - The effect of nitrogen application techniques on the growth of drip irrigated flowering dogwood, oriental dogwood, red maple and mountain laurel AU - Bir, R.E. AU - Conner, J.L. AU - Ranney, T.G. C2 - 1991/// C3 - Proceedings of the Southern Nursery Association Research Conference, 36th Annual Report DA - 1991/// SP - 148–151 ER - TY - MGZN TI - Superior crabapples for the landscape AU - Ranney, T.G. T2 - Mountain Nursery Newsletter DA - 1991/// PY - 1991/// ER - TY - JOUR TI - Osmotic adjustment and solute constituents in leaves and roots of water-stressed cherry trees AU - Ranney, T.G. AU - Bassuk, N.L. AU - Whitlow, T.H. T2 - Journal of the American Society of Horticulture Science AB - Tissue osmotic potential(Ψ π ) and solute constituents were evaluated in leaves and roots of well-watered and water-stressed Prunus avium L. × pseudocerasus Lindl. `Colt' and Prunus cerasus L. `Meteor'. Osmotic potential at full turgorΨ π,sat decreased in response to water stress for leaves and roots of both cultivars. For `Colt', a cultivar with an indeterminate growth habit,Ψ π,sat decreased by 0.56 MPa and 0.38 MPa for terminal expanding leaves and older expanded leaves, respectively. For `Meteor', a cultivar with a determinate growth habit,Ψ π,sat decreased by ≈0.47 MPa in both terminal and older leaves. RootΨ π,sat was alike for both cultivars and showed a similar decrease of 0.20 MPa in response to water stress. Roots had considerably higherΨ π,sat than did leaves in both cultivars, irrespective of irrigation treatment. Soluble carbohydrates and potassium (K + ) were the major solute constituents in both cultivars. Of the soluble carbohydrates, sorbitol was found in the greatest concentration and accounted for the bulk of water stress-induced solute accumulation in both cultivars. Regardless of the irrigation treatment, mature leaves of `Meteor' consistently had lowerΨ π,sat (typically 0.4 MPa) than `Colt'. This variation in Ψ π,sat between Prunus cultivars suggests the potential for selection of cultivars with low Ψ π,sat and possibly superior drought resistance. DA - 1991/// PY - 1991/// DO - 10.21273/jashs.116.4.684 VL - 116 SP - 684–688 KW - PRUNUS-AVIUM X PSEUDOCERASUS COLT KW - PRUNUS-CERASUS METEOR KW - DROUGHT KW - OSMOREGULATION KW - POLYOLS KW - SOLUTE ACCUMULATION KW - SORBITOL KW - WATER RELATIONS ER - TY - JOUR TI - Influence of rootstock, scion, and water deficits on growth of 'Colt' and 'Meteor' cherry trees AU - Ranney, T.G. AU - Bassuk, N.L. AU - Whitlow, T.H. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 SP - 1204–1207 ER - TY - JOUR TI - Arborist's organizations and selected references AU - Ranney, T.G. T2 - The Landscape Newsletter DA - 1991/// PY - 1991/// ER - TY - JOUR TI - Variance of neutral genetic variances within and between populations for a quantitative character AU - Zeng, Z. B. AU - Cockerham, C. C. T2 - Genetics DA - 1991/// PY - 1991/// VL - 129 IS - 2 SP - 535 ER - TY - JOUR TI - LOW OXYGEN DELAYS BUDBREAK OF APPLE-TREES IN GREENHOUSE AND PROLONGS STORAGE LIFE AU - YOUNG, E AU - BLANKENSHIP, SM T2 - HORTSCIENCE AB - Three percent oxygen significantly delayed and reduced budbreak of fully chilled apple (Malus domestica Borkh.) trees in a greenhouse. When ambient oxygen levels were restored, budbreak occurred normally. Apple trees stored under 3% ± 1% oxygen at 6C for 35 weeks had no detectable bud development in storage. Budbreak and subsequent shoot growth were normal after the trees had been removed from storage. DA - 1991/7// PY - 1991/7// DO - 10.21273/hortsci.26.7.890 VL - 26 IS - 7 SP - 890-891 SN - 2327-9834 KW - MALUS-DOMESTICA KW - DORMANCY KW - CONTROLLED ATMOSPHERE KW - NURSERY STOCK KW - POSTHARVEST HANDLING ER - TY - JOUR TI - CHARACTERIZATION OF CIS-ACTING SEQUENCES REGULATING ROOT-SPECIFIC GENE-EXPRESSION IN TOBACCO AU - YAMAMOTO, YT AU - TAYLOR, CG AU - ACEDO, GN AU - CHENG, CL AU - CONKLING, MA T2 - PLANT CELL AB - The expression of the tobacco root-specific gene TobRB7 was characterized. Gel blot hybridizations to RNA isolated from various tobacco tissues demonstrated that steady-state TobRB7 mRNA is not detected in expanded leaf, stem, or shoot apex tissue. To determine the spatial pattern of expression, in situ hybridization to root sections revealed that TobRB7 expression is localized to root meristem and immature central cylinder regions. The 5' flanking region of the gene was studied with respect to its ability to direct root-specific expression. Deletions of 5' flanking sequence were fused to the beta-glucuronidase (GUS) reporter gene and transformed into tobacco. Our data demonstrated that sequences 636 base pairs from the site of transcription initiation are sufficient to direct the root-specific GUS expression in transgenic tobacco, whereas sequences 299 base pairs from the site of transcription initiation fail to direct root-specific expression. A negative regulatory element was apparent between 813 base pairs and 636 base pairs 5' of the transcription initiation site. Histochemical localization of GUS activity in transgenic plants was consistent with in situ hybridization results: GUS activity was localized to the root meristem and central cylinder regions. GUS activity appeared 2 days post-germination in the primary root meristem. In lateral roots, GUS activity was detected from the time of initiation. DA - 1991/4// PY - 1991/4// DO - 10.1105/tpc.3.4.371 VL - 3 IS - 4 SP - 371-382 SN - 1532-298X ER - TY - JOUR TI - Resistance to root-knot nematodes in cucumber and horned cucumber AU - Wehner, T. C. AU - Walters, S. A. AU - Barker, K. R. T2 - Journal of Nematology DA - 1991/// PY - 1991/// VL - 23 IS - 4 SP - 611 ER - TY - JOUR TI - RELATIONSHIP BETWEEN MALATE-DEHYDROGENASE ISOZYME GENOTYPE AND PLANT VIGOR IN PEACH AU - WERNER, DJ AU - MOXLEY, DF T2 - JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE AB - The relationship between malate dehydrogenase (MDH) isozyme genotype and plant vigor in peach [Prunus persica (L.) Batsch] was examined in two F 2 populations (selfed `Belle of Georgia' and `Cresthaven') segregating at the Mdh1 locus. Total progeny examined were 1610 and 998 in the `Belle of Georgia' and `Cresthaven' populations, respectively. In both populations, plant vigor (as defined by total height and trunk caliper after 1 year of growth) was significantly less in Mdh1-1/Mdh1-1 homozygotes. Homozygous Mdh1-2/Mdh1-2 individuals showed the greatest vigor, and were significantly different in vigor from Mdh1-1/Mdh1-1 homozygotes in both populations and from Mdh1-1/Mdh1-2 heterozygotes in the `Belle of Georgia' population. A significant deviation from the expected 1 Mdh1-1/Mdh1-1: 2 Mdh1-1/Mdh1-1 : 1 Mdh1-2/Mdh1-2 ratio was observed in the `Belle of Georgia' population, suggesting moderate lethality of homozygous Mdh1-1/Mdh1-1 genotypes. DA - 1991/3// PY - 1991/3// DO - 10.21273/jashs.116.2.327 VL - 116 IS - 2 SP - 327-329 SN - 0003-1062 KW - ELECTROPHORESIS KW - ISOZYME ER - TY - JOUR TI - Correlation of shoot weight with root galling in Cucumis spp. inoculated with root-knot nematodes AU - Wehner, T. C. AU - Walters, S. A. AU - Barker, K. R. T2 - Report (Cucurbit Genetics Cooperative) DA - 1991/// PY - 1991/// IS - 14 SP - 19 ER - TY - JOUR TI - A brief history of the development of cucumber cultivars in the U.S AU - Wehner, T. C. AU - Robinson, R. W. T2 - Report (Cucurbit Genetics Cooperative) DA - 1991/// PY - 1991/// IS - 14 SP - 1 ER - TY - JOUR TI - CO2-Enhanced Yield and Foliar Deformation among Tomato Genotypes in Elevated CO2 Environments AU - Tripp, Kim E. AU - Peet, Mary M. AU - Pharr, D. Mason AU - Willits, Daniel H. AU - Nelson, Paul V. T2 - Plant Physiology AB - Yield increases observed among eight genotypes of tomato (Lycopersicon esculentum Mill.) grown at ambient CO2 (about 350) or 1000 microliters per liter CO2 were not due to carbon exchange rate increases. Yield varied among genotypes while carbon exchange rate did not. Yield increases were due to a change in partitioning from root to fruit. Tomatoes grown with CO2 enrichment exhibited nonepinastic foliar deformation similar to nutrient deficiency symptoms. Foliar deformation varied among genotypes, increased throughout the season, and became most severe at elevated CO2. Foliar deformation was positively related to fruit yield. Foliage from the lower canopy was sampled throughout the growing season and analysed for starch, K, P, Ca, Mg, Fe, and Mn concentrations. Foliar K and Mn concentrations were the only elements correlated with deformation severity. Foliar K decreased while deformation increased. In another study, foliage of half the plants of one genotype received foliar applications of 7 millimolar KH2PO4. Untreated foliage showed significantly greater deformation than treated foliage. Reduced foliar K concentration may cause CO2-enhanced foliar deformation. Reduced K may occur following decreased nutrient uptake resulting from reduced root mass due to the change in partitioning from root to fruit. DA - 1991/7/1/ PY - 1991/7/1/ DO - 10.1104/pp.96.3.713 VL - 96 IS - 3 SP - 713-719 J2 - Plant Physiol. LA - en OP - SN - 0032-0889 1532-2548 UR - http://dx.doi.org/10.1104/pp.96.3.713 DB - Crossref ER - TY - JOUR TI - C02-enhanced Foliar Deformation of Tomato: Relationship to Foliar Starch Concentration AU - Tripp, K.E. AU - Peet, M.M. AU - Willits, D.H. AU - Pharr, D.M. T2 - Journal of the American Society for Horticultural Science AB - Two cultivars of greenhouse tomato (Lycopersicon esculentum Mill.) were grown with ambient or 1000 μl CO 2 /liter during Jan.-June 1987 and 1988. In both years, CO 2 -enrichment increased foliar deformation and foliar starch, but during the season, foliar starch levels decreased while deformation increased. `Laura' had more deformation, while `Michigan-Ohio' had higher foliar starch concentration. During an entire season, there was no significant relationship between foliar starch concentration and deformation severity. Foliar C exchange rates in the lower canopy were not affected by severity of deformation. Data from these experiments do not support the hypothesis that excess foliar starch is responsible for foliar deformation at elevated CO 2 . DA - 1991/9// PY - 1991/9// DO - 10.21273/jashs.116.5.876 VL - 116 IS - 5 SP - 876-880 J2 - jashs OP - SN - 0003-1062 2327-9788 UR - http://dx.doi.org/10.21273/jashs.116.5.876 DB - Crossref KW - CO2 ENRICHMENT KW - LYCOPERSICON-ESCULENTUM KW - DISORDER ER - TY - JOUR TI - Root flooding of muskmelon (Cucumis melo L.) affects fruit sugar concentration but not leaf carbon exchange rate AU - Kroen, W. K. AU - Pharr, D. M. AU - Huber, S. C. T2 - Plant and Cell Physiology DA - 1991/// PY - 1991/// VL - 32 IS - 4 SP - 467 ER - TY - JOUR TI - Nutrient Dilution by Starch in CO2-enriched Chrysanthemum AU - Kuehny, Jeff S. AU - Peet, Mary M. AU - Nelson, Paul V. AU - Willits, Dan H. T2 - Journal of Experimental Botany AB - Journal Article Nutrient Dilution by Starch in CO2-enriched Chrysanthemum Get access JEFF S. KUEHNY, JEFF S. KUEHNY Departments of Horticultural ScienceBox 7609 and Biological and Agricultural EngineeringBox 7625, North Carolina State UniversityRaleigh, N.C. 27695-7609, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar MARY M. PEET, MARY M. PEET 2 Departments of Horticultural ScienceBox 7609 and Biological and Agricultural EngineeringBox 7625, North Carolina State UniversityRaleigh, N.C. 27695-7609, USA 2 To whom correspondence should be addressed Search for other works by this author on: Oxford Academic PubMed Google Scholar PAUL V. NELSON, PAUL V. NELSON Departments of Horticultural ScienceBox 7609 and Biological and Agricultural EngineeringBox 7625, North Carolina State UniversityRaleigh, N.C. 27695-7609, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar DAN H. WILLITS DAN H. WILLITS Departments of Horticultural ScienceBox 7609 and Biological and Agricultural EngineeringBox 7625, North Carolina State UniversityRaleigh, N.C. 27695-7609, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Experimental Botany, Volume 42, Issue 6, June 1991, Pages 711–716, https://doi.org/10.1093/jxb/42.6.711 Published: 01 June 1991 Article history Received: 28 September 1990 Accepted: 05 December 1990 Published: 01 June 1991 DA - 1991/// PY - 1991/// DO - 10.1093/jxb/42.6.711 VL - 42 IS - 6 SP - 711-716 J2 - J Exp Bot LA - en OP - SN - 0022-0957 1460-2431 UR - http://dx.doi.org/10.1093/jxb/42.6.711 DB - Crossref KW - CO2 ENRICHMENT KW - STARCH KW - NUTRIENTS KW - IRRADIANCE ER - TY - JOUR TI - Influence of soil moisture on phytotoxicity of cinmethylin to various crops AU - Russell, S. G. AU - Monaco, T. J. AU - Weber, J. B. T2 - Weed Science DA - 1991/// PY - 1991/// VL - 39 IS - 3 SP - 402 ER - TY - JOUR TI - Growth responses of Heptacodium miconioides to various photoperiods and day/night temperatures AU - Lee, C. C. AU - Bilderback, T. E. AU - Thomas, J. F. T2 - Journal of the American Society for Horticultural Science DA - 1991/// PY - 1991/// VL - 116 IS - 4 SP - 646 ER - TY - JOUR TI - Agricultural adjustment in the Carolinas and Georgia through alternative cropping systems AU - Sanders, D. C. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 IS - 9 SP - 1131 ER - TY - JOUR TI - PHYSICAL ANALYSIS OF ROCKWOOL SLABS AND EFFECTS OF FIBER ORIENTATION, IRRIGATION FREQUENCY AND PROPAGATION TECHNIQUE ON CHRYSANTHEMUM PRODUCTION AU - NELSON, PV AU - FONTENO, WC T2 - JOURNAL OF PLANT NUTRITION AB - Abstract Chrysanthemum X morifolium ’Bright Yellow May Shoesmith’ was grown as a cut flower crop in rockwool slabs in various methods to test different cultural and rockwool options. Direct planting of unrooted and calloused cuttings led to deleterious water stresses in spite of a commercially prohibitive input of labor for syringing. Planting of partially rooted cuttings was successful in terms of flower production but required excessive labor. Satisfactory and equal results were obtained from 1) inserting cuttings rooted in rockwool cubes into the slab such that the cube top was either flush or 1.3 cm above the slab surface, 2) applying nutrients 1 or 3 times per day, and 3) a horizontal or verticle fiber orientation in the slab. Nutrient accumulation in plants of all treatments were in satisfactory ranges and did not account for observed differences in growth. DA - 1991/// PY - 1991/// DO - 10.1080/01904169109364247 VL - 14 IS - 8 SP - 853-866 SN - 0190-4167 ER - TY - JOUR TI - Crop loss to 14 diseases in cucumber in North Carolina for 1983 to 1988 AU - St. Amand, P. C. AU - Wehner, T. C. T2 - Report (Cucurbit Genetics Cooperative) DA - 1991/// PY - 1991/// IS - 14 SP - 15 ER - TY - JOUR TI - Carbon Gain and Photosynthetic Response of Chrysanthemum to Photosynthetic Photon Flux Density Cycles AU - Stoop, Johan M. H. AU - Willits, Dan H. AU - Peet, Mary M. AU - Nelson, Paul V. T2 - Plant Physiology AB - Most models of carbon gain as a function of photosynthetic irradiance assume an instantaneous response to increases and decreases in irradiance. High- and low-light-grown plants differ, however, in the time required to adjust to increases and decreases in irradiance. In this study the response to a series of increases and decreases in irradiance was observed in Chrysanthemum x morifolium Ramat. "Fiesta" and compared with calculated values assuming an instantaneous response. There were significant differences between high- and low-light-grown plants in their photosynthetic response to four sequential photosynthetic photon flux density (PPFD) cycles consisting of 5-minute exposures to 200 and 400 micromoles per square meter per second (mumol m(-2)s(-1)). The CO(2) assimilation rate of high-light-grown plants at the cycle peak increased throughout the PPFD sequence, but the rate of increase was similar to the increase in CO(2) assimilation rate observed under continuous high-light conditions. Low-light leaves showed more variability in their response to light cycles with no significant increase in CO(2) assimilation rate at the cycle peak during sequential cycles. Carbon gain and deviations from actual values (percentage carbon gain over- or underestimation) based on assumptions of instantaneous response were compared under continuous and cyclic light conditions. The percentage carbon gain overestimation depended on the PPFD step size and growth light level of the leaf. When leaves were exposed to a large PPFD increase, the carbon gain was overestimated by 16 to 26%. The photosynthetic response to 100 mumol m(-2) s(-1) PPFD increases and decreases was rapid, and the small overestimation of the predicted carbon gain, observed during photosynthetic induction, was almost entirely negated by the carbon gain underestimation observed after a decrease. If the PPFD cycle was 200 or 400 mumol m(-2) s(-1), high- and low-light leaves showed a carbon gain overestimation of 25% that was not negated by the underestimation observed after a light decrease. When leaves were exposed to sequential PPFD cycles (200-400 mumol m(-2) s(-1)), carbon gain did not differ from leaves exposed to a single PPFD cycle of identical irradiance integral that had the same step size (200-400-200 mumol m(-2) s(-1)) or mean irradiance (200-300-200 mumol m(-2) s(-1)). DA - 1991/6/1/ PY - 1991/6/1/ DO - 10.1104/pp.96.2.529 VL - 96 IS - 2 SP - 529-536 J2 - Plant Physiol. LA - en OP - SN - 0032-0889 1532-2548 UR - http://dx.doi.org/10.1104/pp.96.2.529 DB - Crossref ER - TY - JOUR TI - COMPARATIVE DROUGHT RESISTANCE AMONG 6 SPECIES OF BIRCH (BETULA) - INFLUENCE OF MILD WATER-STRESS ON WATER RELATIONS AND LEAF GAS-EXCHANGE AU - RANNEY, TG AU - BIR, RE AU - SKROCH, WA T2 - TREE PHYSIOLOGY AB - Responses of plant water relations and leaf gas exchange to mild water stress were monitored and compared among six species of birch; monarch birch (Betula maximowicziana Reg.), river birch (B. nigra L.), paper birch (B. papyrifera Marsh.), European white birch (B. pendula Roth.), ‘Whitespire’ Japanese birch (B. platyphylla var. japonica Hara. ‘Whitespire’), and gray birch (B. populifolia Marsh.). Before imposition of water stress, ‘Whitespire’ Japanese birch and river birch maintained the highest stomatal conductances and net rates of photosynthesis of the species examined. After irrigation was withheld, stomatal conductance and rate of net photosynthesis gradually declined for most species. After 28 days without irrigation, ‘Whitespire’ Japanese birch maintained significantly higher stomatal conductance and rate of net photosynthesis than did the other species despite having one of the lowest midday water potentials. There was no evidence of osmotic adjustment by any of the species in response to the imposed drought. However, there was substantial variation in the water potential at the turgor loss point among the species, from a high of –1.34 MPa for river birch to a low of –1.78 MPa for ‘Whitespire’ Japanese birch. Stomatal conductance and net photosynthesis under mild water stress (average predawn leaf water potential of –0.61 MPa) were negatively correlated with leaf osmotic potential at full turgor and leaf water potential at the turgor loss point. Thus, the greater net photosynthesis of ‘Whitespire’ Japanese birch under water stress compared with the other species appears to have resulted from a superior capacity to maintain turgor at low leaf water potentials, which in turn provided for greater stomatal conductance and CO2 uptake. These results indicate that ‘Whitespire’ Japanese birch is better adapted to dry sites than the other species. DA - 1991/6// PY - 1991/6// DO - 10.1093/treephys/8.4.351 VL - 8 IS - 4 SP - 351-360 SN - 0829-318X ER - TY - JOUR TI - Whole-plant response of selected woody landscape species to uniconazole AU - Warren, S. L. AU - Blazich, F. A. AU - Thetford, M. T2 - Journal of Environmental Horticulture DA - 1991/// PY - 1991/// VL - 9 IS - 3 SP - 163 ER - TY - JOUR TI - Influence of container design on root circling, top growth, and post-transplant root growth of selected landscape species AU - Warren, S. L. AU - Blazich, F. A. T2 - Journal of Environmental Horticulture DA - 1991/// PY - 1991/// VL - 9 IS - 3 SP - 141 ER - TY - JOUR TI - Herbicide tolerance of selected ericaceous species AU - Skroch, W. A. AU - Warren, S. L. AU - Gallitano, L. B. T2 - Journal of Environmental Horticulture DA - 1991/// PY - 1991/// VL - 9 IS - 4 SP - 196 ER - TY - JOUR TI - Growth and development of young asparagus plants in response to N fertilization AU - Pitman, B. C. AU - Sanders, D. C. AU - Swallow, W. H. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 IS - 2 SP - 109 ER - TY - JOUR TI - GY-5 CUCUMBER INBRED AND JOHNSTON HYBRID PICKLING CUCUMBER AU - WEHNER, TC AU - JENKINS, SF AU - LOWER, RL T2 - HORTSCIENCE DA - 1991/1// PY - 1991/1// DO - 10.21273/hortsci.26.1.78 VL - 26 IS - 1 SP - 78-79 SN - 2327-9834 KW - CUCUMIS-SATIVUS KW - VEGETABLE BREEDING ER - TY - JOUR TI - Frost/freeze protection of strawberries grown on black plastic mulch AU - Poling, E. B. AU - Fuller, H. P. AU - Perry, K. B. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 IS - 1 SP - 15 ER - TY - JOUR TI - Evaluation of six herbicides for potential use in tree seed beds AU - Warren, S. L. AU - Skroch, W. A. T2 - Journal of Environmental Horticulture DA - 1991/// PY - 1991/// VL - 9 IS - 3 SP - 160 ER - TY - JOUR TI - SUPPRESSION OF APPLE BLOOM WITH GIBBERELLIN SPRAYS AU - UNRATH, CR AU - WHITWORTH, J T2 - JOURNAL OF HORTICULTURAL SCIENCE AB - SummaryGibberellin A4+7 at concentrations of 250 mg P1 active ingredient (a.i.) or less, applied as one, two or three sprays 4-16 weeks after petal fall gave inconsistent flower thinning on five year old redchief ‘Delicious’ apple trees. Four sprays, each a month apart, beginning one month after petal fall on similar six year old trees, with concentrations of 250 or 500 mg r1 a.i., eliminated 95% or 99% of return bloom, respectively. DA - 1991/3// PY - 1991/3// DO - 10.1080/00221589.1991.11516138 VL - 66 IS - 2 SP - 155-157 SN - 0022-1589 ER - TY - JOUR TI - QUANPLUS: A spreadsheet for calculation of heritability and generation mean separation AU - Ozminkowski, R. H., Jr. AU - Moll, R. H. AU - Gardner, R. G. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 IS - 8 SP - 1086 ER - TY - JOUR TI - Planting medium effects on forced Swaziland- and Dutch-grown Hippeastrum hybrids AU - Hertogh, A. A. de AU - Tilley, M. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 IS - 9 SP - 1168 ER - TY - JOUR TI - INFLUENCE OF CHILLING AT 5-DEGREES-C, IBA, SUCKERING AND TOP GROWTH ON ROOT REGENERATION IN SEEDLINGS OF MALUS-SPP AU - ARNOLD, MA AU - YOUNG, E T2 - JOURNAL OF HORTICULTURAL SCIENCE AB - SummaryFour experiments were conducted to separate the enhancement of root growth by chilling at 5°C from the promoting effects of the growth of new shoots and suckers (adventitious shoots from roots) during forcing in apple. Various combinations of low temperatures (5°C), detaching plants at the soil surface, girdling, and/or IBA were used to suppress new shoot and sucker growth during forcing after subjecting Malus seedlings to increasing levels of chilling. Following increasing duration of chilling at 5°C (CH), forcing intact Malus domestica Borkh. seedlings at a 20°C soil and air temperature caused initial bud- break, shoot extension, and root growth to occur earlier, faster, and to reach a greater final magnitude. Detaching M. domestica seedlings at the soil surface prior to chilling was ineffective as a means of separating root and top growth responses to chilling as it stimulated production of suckers and/or watersprouts near the soil surface. Root numbers and fresh weights in M. domestica, Malus anis, and Malus ranetka were increased by chilling, even with 5°C air and 20°C soil forcing conditions. Following longer periods of chilling intact seedlings, all three species had increased sucker or watersprout (at or below the soil surface) growth at 5°C air and 20°C soil forcing conditions. By using combinations of 5°C atmospheric temperature to maintain shoot quiescence and IBA root dips to inhibit suckering, the root growth response to chilling could be isolated from the promoting effects of top, watersprout, and sucker growth during the forcing of M. domestica. Dipping roots in IBA inhibited suckering and watersprouts below the soil surface, reduced shoot extension, and increased root number and fresh weight across all chilling treatments. However, IBA did not alter the overall pattern of root growth enhancement by chilling. DA - 1991/7// PY - 1991/7// DO - 10.1080/00221589.1991.11516171 VL - 66 IS - 4 SP - 423-433 SN - 0022-1589 ER - TY - JOUR TI - Growth retardant effects on hydrangeas AU - Bailey, D. A. AU - Clark, B. T2 - North Carolina Flower Growers' Bulletin DA - 1991/// PY - 1991/// VL - 36 IS - 4 SP - 4 ER - TY - JOUR TI - Gene list for watermelon AU - Henderson, W. R. T2 - Report (Cucurbit Genetics Cooperative) DA - 1991/// PY - 1991/// IS - 14 SP - 129 ER - TY - JOUR TI - Effects of applied humic acids on yield, growth, nutrient accumulation/content in selected vegetable crops and soil interactions that reduce their effectiveness AU - David, P. P. T2 - Dissertation Abstracts International. B, Sciences and Engineering DA - 1991/// PY - 1991/// VL - 52 IS - 3 SP - 1136 ER - TY - JOUR TI - CuCO3-painted containers and root pruning affect apple and green ash root growth and cytokinin levels AU - Arnold, M. A. AU - Young, E. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 IS - 3 SP - 242 ER - TY - JOUR TI - CLIMATOLOGY OF AIR PARCEL TRAJECTORIES RELATED TO THE ATMOSPHERIC TRANSPORT OF PERONOSPORA-TABACINA AU - DAVIS, JM AU - MONAHAN, JF T2 - PLANT DISEASE AB - Five years of temperature and wind data from atmospheric soundings were used in conjuction with the U.S. National Oceanic & Atmospheric Administration (NOAA) Air Resources Laboratories Atmospheric Transport and Dispersion (ATAD) model to construct an atmospheric air parcel trajectory climatology for the transport of the sporangiospores of the fungus Peronospora tabacina. With the receptor point in the North Carolina mountains, four receptor-oriented (backward-in-time) trajectories were calculated daily for April through August (...) DA - 1991/7// PY - 1991/7// DO - 10.1094/PD-75-0706 VL - 75 IS - 7 SP - 706-711 SN - 0191-2917 ER - TY - JOUR TI - Seed germination of Rhododendron catawbiense and Rhododendron maximum: Influence of light and temperature AU - Blazich, F. A. AU - Warren, S. L. AU - Acedo, J. R. AU - Reece, W. M. T2 - Journal of Environmental Horticulture DA - 1991/// PY - 1991/// VL - 9 IS - 1 SP - 5 ER - TY - JOUR TI - Seed germination of Leucothoe fontanesiana as influenced by light and temperature AU - Blazich, F. A. AU - Warren, S. L. AU - Acedo, J. R. AU - Whitehead, R. O. T2 - Journal of Environmental Horticulture DA - 1991/// PY - 1991/// VL - 9 IS - 2 SP - 72 ER - TY - JOUR TI - Plant breeding training in public institutions in the United States: A survey conducted by the National Plant Genetic Resources Board AU - Collins, W. W. AU - Phillips, R. L. T2 - Diversity DA - 1991/// PY - 1991/// VL - 7 IS - 3 SP - 28 ER - TY - JOUR TI - Oxygen uptake and hydrogen-stimulated nitrogenase activity from Azorhizobium caulinodans ORS571 grown in a succinate-limited chemostat AU - Allen, G. C. AU - Grimm, D. T. AU - Elkan, G. H. T2 - Applied and Environmental Microbiology DA - 1991/// PY - 1991/// VL - 57 IS - 11 SP - 3220 ER - TY - JOUR TI - EFFECT OF FENOXAPROP, HALOXYFOP AND SETHOXYDIM ON ACETYL COENZYME-A CARBOXYLASE FROM RICE, BARNYARDGRASS AND SPRANGLETOP AU - BJELK, LA AU - MONACO, TJ AU - ZORNER, PS T2 - PLANT SCIENCE AB - Acetyl coenzyme A carboxylase (ACCase), the target site inhibited by two groups of herbicides, the aryloxyphenoxypropionates and cyclohexanediones, was extracted and partially purified from rice (Oryza sativa LeMont L.), barnyardgrass (Echinchloa crusgalli (L.) Beauv.) and sprangletop (Leptochloa fascicularis (Lam.) Gray). This was to determine whether the lack of inhibition of rice to three grass toxic herbicides, haloxyfop, fenoxaprop and sethoxydim is due to a differential selectivity at the enzyme level. Incorporation ration rates of NaH14CO3 into malonyl coenzyme A (CoA) were linear up to 8 min and maximum specific activity was obtained at 0.1–0.2 mg protein. Inhibition of ACCase from rice and the two weed species by haloxyfop and fenoxaprop showed differences that disappeared with higher concentrations of herbicide. I50 values for haloxyfop inhibition of ACCase from rice, barnyardgrass and sprangletop were 3.50, 2.50 and 2.40 μM, respectively. I50 values for fenoxaprop inhibition of enzyme from rice, barnyardgrass and sprangletop were 0.63, 0.33 and 0.33 μM, respectively. ACCase from rice was more sensitive to sethoxydim than from the two grass weeds. I50 values for rice, barnyardgrass and sprangletop were 6.18, 6.76 and 7.23 μM, respectively. These results suggest that selectivity of fenoxaprop and haloxyfop in rice may be in part attributable to a decreased sensitivity of ACCase, but this cannot totally account for the margin of tolerance exhibited in the field. DA - 1991/// PY - 1991/// DO - 10.1016/0168-9452(91)90019-5 VL - 73 IS - 2 SP - 129-135 SN - 0168-9452 KW - RICE KW - ORYZA-SATIVA KW - SPRANGLETOP KW - LEPTOCHLOA-FASCICULARIS KW - BARNYARDGRASS, ECHINOCHLOA-CRUS-GALLI KW - FENOXAPROP KW - HALOXYFOP KW - SETHOXYDIM ER - TY - JOUR TI - Comparison of ethylene gassing methods for tomatoes AU - Blankenship, S. M. AU - Sisler, E. C. T2 - Postharvest Biology and Technology AB - Tomato fruit were gassed with either ethylene from a pressurized gas cylinder or ethylene containing effluent from a catalytic generator. The liquid used in the catalytic generator contained ethanol and several other compounds. The gaseous effluent emitted by the generator contained a variety of compounds besides ethylene, probably ethers and alcohols. Tomato colour changes during ripening showed more variation after treatment with generator effluent than cylinder ethylene in two out of three experiments. However, the mean colour rating was not significantly different between the two treatments. The combined results of two taste panels, showed that the panelists could distinguish a treatment difference. Comments from the panelists indicated no preference for one treatment over the other. DA - 1991/// PY - 1991/// DO - 10.1016/0925-5214(91)90019-8 VL - 1 IS - 1 SP - 59 ER - TY - JOUR TI - Vapor pressure deficit, temperature, and light affect postharvest drying of Fraser fir and eastern white pine AU - Hinesley, L. E. AU - Snelling, L. K. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 IS - 4 SP - 402 ER - TY - JOUR TI - Sucrose phosphate synthase and other sucrose metabolizing enzymes in fruits of various species AU - Hubbard, N. L. AU - Pharr, D. M. AU - Huber, S. C. T2 - Physiologia Plantarum DA - 1991/// PY - 1991/// VL - 82 IS - 2 SP - 191 ER - TY - JOUR TI - INACTIVATION OF HIGHLY ACTIVATED SPINACH LEAF SUCROSE-PHOSPHATE SYNTHASE BY DEPHOSPHORYLATION AU - HUBER, JL AU - HITE, DRC AU - OUTLAW, WH AU - HUBER, SC T2 - PLANT PHYSIOLOGY AB - Spinach (Spinacia oleracea L.) leaf sucrose-phosphate synthase (SPS) can be phosphorylated and inactivated in vitro with [gamma-(32)P]ATP (JLA Huber, SC Huber, TH Nielsen [1989] Arch Biochem Biophys 270: 681-690). Thus, it was surprising to find that SPS, extracted from leaves fed mannose in the light to highly activate the enzyme, could be inactivated in an ATP-independent manner when desalted crude extracts were preincubated at 25 degrees C before assay. The "spontaneous" inactivation involved a loss in activity measured with limiting substrate concentrations in the presence of the inhibitor, Pi, without affecting maximum catalytic activity. The spontaneous inactivation was unaffected by exogenous carrier proteins and protease inhibitors, but was inhibited by inorganic phosphate, fluoride, and molybdate, suggesting that a phosphatase may be involved. Okadaic acid, a potent inhibitor of mammalian type 1 and 2A protein phosphatases, had no effect up to 5 micromolar. Inactivation was stimulated about twofold by exogenous Mg(2+) and was relatively insensitive to Ca(2+) and to pH over the range pH 6.5 to 8.5. Radioactive phosphate incorporated into SPS during labeling of excised leaves with [(32)P]Pi (initially in the dark and then in the light with mannose) was lost with time when desalted crude extracts were incubated at 25 degrees C, and the loss in radiolabel was substantially reduced by fluoride. These results provide direct evidence for action of an endogenous phosphatase(s) using SPS as substrate. We postulate that highly activated SPS contains phosphorylated residue(s) that increase activation state, and that spontaneous inactivation occurs by removal of these phosphate group(s). Inactivation of SPS in vivo caused by feeding uncouplers to darkened leaf tissue that had previously been fed mannose in the dark, may occur by this mechanism. However, there is no evidence that this mechanism is involved in light-dark regulation of SPS in vivo. DA - 1991/1// PY - 1991/1// DO - 10.1104/pp.95.1.291 VL - 95 IS - 1 SP - 291-297 SN - 0032-0889 ER - TY - JOUR TI - GEOGRAPHIC-DISTRIBUTION OF 2 COLOR FORMS, CARBOXYLESTERASE ACTIVITY, AND CHROMOSOME CONFIGURATION OF THE TOBACCO APHID (HOMOPTERA, APHIDIDAE) IN NORTH-CAROLINA AU - HARLOW, CD AU - SOUTHERN, PS AU - LAMPERT, EP T2 - JOURNAL OF ECONOMIC ENTOMOLOGY AB - A statewide survey was conducted in tobacco fields throughout 17 counties in North Carolina to determine distribution and relative abundances of red and green color forms of the tobacco aphid, Myzus nicotianae Black man. Samples of tobacco aphids from infested fields were collected during the survey and used to establish 36 laboratory cultures. A carboxylesterase assay was performed on aphids from each established laboratory culture to determine general carboxylesterase hydrolyzing activities. Significant differences among cultures were observed. Activities ranged from 40.04 μM 1-naphthol produced per minute per red aphid in Wayne County to 77.36 in Bladen County. Activities in green aphids ranged from 17.12 in Johnston County to 53.52 in Watauga County. Aphids with high carboxylesterase activities (>40 IJ-MI-naphthol produced per minute per aphid) were of both colors; however, all aphids with low activities <22) were green. When a squash technique was used to identify the karyotype of aphids from the cultures, two karyotypes were identified in the aphids. These were 12 chromosomes with a normal configuration and 12 chromosomes with a I, 3 autosomal trans location. All red aphids possessed the trans location. Aphids from four of the nine green cultures had the trans location. All four green forms with the trans location had high carboxylesterase activities (>40 μM I-naphthol produced per minute per aphid). The five cultures with normal karyotypes had low activities <22). DA - 1991/8// PY - 1991/8// DO - 10.1093/jee/84.4.1175 VL - 84 IS - 4 SP - 1175-1179 SN - 0022-0493 KW - INSECTA KW - MYZUS-NICOTIANAE KW - CHROMOSOME TRANSLOCATION KW - CARBOXYLESTERASE ER - TY - JOUR TI - ETHNOBOTANY OF CLITORIA (LEGUMINOSAE) AU - FANTZ, PR T2 - ECONOMIC BOTANY DA - 1991/// PY - 1991/// DO - 10.1007/BF02930715 VL - 45 IS - 4 SP - 511-520 SN - 0013-0001 KW - CLITORIA KW - CLITORIA-TERNATEA KW - ETHNOBOTANY ER - TY - JOUR TI - COMPUTER-ASSISTED EVALUATION OF THE ECONOMIC-IMPACT OF CANCELLATION OF PESTICIDE REGISTRATIONS AU - BAILEY, JE AU - TILMON, HD AU - TOTH, SJ AU - PHIPPS, PM T2 - PLANT DISEASE DA - 1991/10// PY - 1991/10// DO - 10.1094/PD-75-1077 VL - 75 IS - 10 SP - 1077-1080 SN - 1943-7692 ER - TY - JOUR TI - Weight and nutrient content of litter during secondary succession on well-drained uplands of the East Gulf Coastal Plain in Mississippi AU - Hinesley, L. E. AU - Nelson, L. E. AU - Switzer, G. L. T2 - Canadian Journal of Forest Research AB - Production of forest litter was examined over 2 years in a chronosequence of stands representing four stages of secondary succession on well-drained uplands of the East Gulf Coastal Plain in Mississippi. Average age for these stands was from 22 to 207 years. Early succession was dominated by dense pine stands, whereas mature forests were about 75% hardwood. Litter mass was greatest early in succession, when productivity was highest, and decreased as stands matured. Foliage was approximately 70% of the litter throughout succession. The remaining 30% was mostly large woody material in young pine stands, but a heavy reproductive component in mature stands. Stands dominated by pines produced litter throughout the year, whereas hardwood stands were more cyclic. In young pine stands, the N and P content of litter was already 80–90% of the maximum value realized later in succession, whereas Ca and Mg accumulated in proportion to hardwood basal area. Nutrient concentrations in litter varied by season, component, and stage of succession. Foliar litter that fell in the spring and summer had higher N and P concentrations than that that fell in the fall. Seasonal patterns of litter production, as well as variations in nutrient concentration, made the monthly variation of nutrients returned to the forest floor less extreme than that of foliar litter fall weights. DA - 1991/// PY - 1991/// DO - 10.1139/x91-119 VL - 21 IS - 6 SP - 848 ER - TY - JOUR TI - Effect of water additives on Fraser fir needle retention AU - Hinesley, L. E. AU - Blankenship, S. M. T2 - HortTechnology AB - Several floral and tree preservatives were evaluated to determine their effect on postharvest needle retention of Fraser fir [ Abies fraseri (Pursh) Poir.], an important Christmas tree species. Clorox (sodium hypochlorite) and aspirin (salicylic acid) caused massive needle loss, and three of the six commercial additives increased needle loss significantly, No treatment was better than water alone. DA - 1991/// PY - 1991/// DO - 10.21273/horttech.1.1.90 VL - 1 IS - 1 SP - 90 ER - TY - JOUR TI - Attributes of water additives affect postharvest needle retention of Fraser fir AU - Hinesley, L. E. AU - Blankenship, S. M. T2 - HortScience DA - 1991/// PY - 1991/// VL - 26 IS - 5 SP - 569 ER - TY - JOUR TI - Photoregulation of the Cat2 and Cat3 catalase genes in pigmented and pigment-deficient maize - The circadian regulation of Cat3 is superimposed on its quasi-constitutive expression in maize leaves AU - Acevedo, A. AU - Williamson, J. D. AU - Scandalios, J. G. T2 - Genetics DA - 1991/// PY - 1991/// VL - 127 IS - 3 SP - 601-607 ER -