@article{walters_schultheis_2009, title={Directionality of pollinator movements in watermelon plantings}, volume={44}, number={1}, journal={HortScience}, author={Walters, S. A. and Schultheis, J. R.}, year={2009}, pages={49–52} } @article{walters_wehner_2002, title={Incompatibility in diploid and tetraploid crosses of Cucumis sativus and Cucumis metuliferus}, volume={128}, ISSN={["0014-2336"]}, DOI={10.1023/A:1021212815590}, number={3}, journal={EUPHYTICA}, author={Walters, SA and Wehner, TC}, year={2002}, pages={371–374} } @article{walters_shetty_wehner_2001, title={Segregation and linkage of several genes in cucumber}, volume={126}, number={4}, journal={Journal of the American Society for Horticultural Science}, author={Walters, S. A. and Shetty, N. V. and Wehner, T. C.}, year={2001}, pages={442–450} } @article{walters_wehner_barker_1999, title={Greenhouse and field resistance in cucumber to root-knot nematodes}, volume={1}, ISSN={["1388-5545"]}, DOI={10.1163/156854199508270}, abstractNote={ Abstract Ten cultigens were evaluated for resistance to Meloidogyne arenaria races 1 and 2, and M. javanica under greenhouse and field conditions. Resistance to M. arenaria races 1 and 2, and M. javanica was verified in Cucumis sativus var. hardwickii line LJ 90430 and to M. arenaria race 2 in C. sativus var. sativus Southern Pickler and Mincu in a greenhouse test. Another cultigen of C. sativus var. hardwickii (PI 215589) was found to be resistant to M. arenaria race 2 but not to other root-knot nematode species tested. LJ 90430 is the cultigen of choice to develop root-knot nematode resistant cucumbers, since it has multiple root-knot nematode resistance and is cross-compatible with cucumber. Greenhouse and field data were positively correlated (r = 0.74) over both years. Experiment repeatabilities were calculated from the cultigens infected with root-knot nematodes under both greenhouse and field conditions. Four environments (greenhouse and field over 2 years) were used in the analysis. Repeatabilities were high in all instances (ranging from 0.83-0.99) and indicated that the environment (field or greenhouse) was not an important factor in assessing root-knot nematode resistance for the cultigens evaluated. Resistenz von Gurkengegen Wurzelgallennematoden im Gewachshaus undim Freiland - Unter Gewachshausund Freilandbedingungen wurden zehn Cultigene auf ihre Resistenz gegen Meloidogyne arenaria Rassen 1 und 2 und gegen M. javanica gepruft. Bei Cucumis sativus var. hardwickii Linie LJ 90430 wurde im Gewachshausversuch Resistenz gegen M. arenaria Rassen 1 und 2 sowie gegen M. javanica nachgewiesen, und in C. sativus var. sativus "Southern Pickler" und "Mincu" Resistenz gegen M. arenaria Rasse 2. Cultigen C. sativus var. hardwickii (PI 215589) war resistent gegen M. arenaria Rasse 2 aber nicht gegen die anderen gepruften Arten von Wurzelgallennematoden. LJ 90430 ist das Cultigen der Wahl bei der Entwicklung von Gurken, die gegen Wurzelgallennematoden resistent sind, da es multiple Resistenzen gegen Wurzelgallennematoden besitzt und kreuzungsvertraglich mit Gurke ist. Die Ergebnisse der Gewachshaus- und Feldversuche waren uber beide Versuchsjahre hin positiv korreliert (r = 0,74). Ausgehend von den Cultigenen, die im Gewachshaus und im Freiland mit Wurzelgallennematoden infiziert waren, wurden die Wiederholbarkeiten der Versuche berechnet. Dabei wurden vier verschiedene Umweltbedingungen (Gewachshaus und Freiland uber zwei Jahre) verwendet. Die Wiederholbarkeiten waren in allen Fallen hoch (0,83-0,99) und zeigten an, dass die Umwelt (Freiland oder Gewachshaus) kein wichtiger Faktor bei der Bestimmung der Resistenz gegen Wurzelgallennematoden bei den gepruften Cultigenen war. }, number={1999 June}, journal={NEMATOLOGY}, author={Walters, SA and Wehner, TC and Barker, KR}, year={1999}, month={Jun}, pages={279–284} } @article{schultheis_walters_adams_1999, title={In-row plant spacing and date of harvest of 'Beauregard' sweetpotato affect yield and return on investment}, volume={34}, number={7}, journal={HortScience}, author={Schultheis, J. R. and Walters, S. A. and Adams, D. E.}, year={1999}, pages={1229–1233} } @article{walters_wehner_1998, title={Independence of the Mj nematode resistance gene from 17 gene loci in cucumber}, volume={33}, number={6}, journal={HortScience}, author={Walters, S. A. and Wehner, T. C.}, year={1998}, pages={1050–1052} } @article{schultheis_wehner_walters_1998, title={Optimum planting density and harvest stage for little-leaf and normal-leaf cucumbers for once-over harvest}, volume={78}, ISSN={["0008-4220"]}, DOI={10.4141/P97-065}, abstractNote={ Optimum planting density and harvest stage were determined for once-over harvest of little-leaf and normal-leaf cucumbers. Three harvest stages (10, 25, and 50% oversize fruit) and four plant densities (37,000, 75,000, 150,000, and 300,000 plants/ha) were evaluated on little-leaf cucumber (H-19) and normal-leaf cucumber (Sumter and Regal). Plant density did not affect skin color, seedcell size, and seed size in the cultivars evaluated. However, lighter skin color, larger seedcell, and larger seed size were detected at the later harvest stages in H-19. Harvest stage did not influence fruit skin color in Regal and Sumter, but seedcell size and seed size increased quadratically with harvest stage. H-19 produced the highest yield (tonne/ha) and dollar value ($/ha) followed by Regal and Sumter. Considering fruit quality and dollar value, the 10% harvest stage at 330 000 plants ha−1 was the optimum stage and density for once-over harvest of H-19 under North Carolina growing conditions. Higher yield occurred at the later harvest stages, but poorer fruit quality (increased seed and seedcell size, and a lighter skin color) was associated with those stages. Fruit quality and dollar value of Regal was best at the 10% harvest stage at approximately 240 000 plants ha−1, while 200 000 plants ha−1 was best for Sumter. Key words: Cucumis sativus, cucumber, plant type, spacing, crop ideotype, vegetable production }, number={2}, journal={CANADIAN JOURNAL OF PLANT SCIENCE}, author={Schultheis, JR and Wehner, TC and Walters, SA}, year={1998}, month={Apr}, pages={333–340} } @article{walters_wehner_barker_1997, title={A single recessive gene for resistance to the root-knot nematode (Meloidogyne javanica) in Cucumis sativus var hardwickii}, volume={88}, ISSN={["0022-1503"]}, DOI={10.1093/oxfordjournals.jhered.a023060}, abstractNote={Resistance to the root-knot nematode (Meloidogyne javanica) was identified in the Cucumis sativus var. hardwickii line LJ 90430. Parents, F,, F2, and BC, to both parents of a cross between Sumter (Cucumis sativus var. sativus) and LJ 90430 were evaluated in two greenhouse experiments to determine genetics of resistance to M. javanica. All F, progeny were susceptible, and segregation ratios in the F2 resulted in 1 resistant:3 susceptible. Backcross progeny to the susceptible parent were susceptible, and the BC, to the resistant parent segregated 1 resistant: 1 susceptible. Reciprocal crosses did not differ and therefore showed no evidence of maternal or cytoplasmic effects. Results from the crosses of several inbreds (Addis, Gy 14, Gy 57u, Poinsett 87, and Sumter) with LJ 90430 indicated that use of those five different genetic backgrounds had no influence on gene expression. The five F2 families segregated in a 1 resistant: 3 susceptible ratio. The five BC, (to LJ 90430) families segregated in a 1 resistant: 1 susceptible ratio. F3 families were developed from resistant and susceptible F2 plants using the five inbreds. Resistant FJJ families produced progeny that were all resistant, and susceptible F^ families fit a ratio of 1 susceptible:2 segregating. Thus, resistance to M. javanica is conferred by a single recessive gene for which we propose the symbol mj.}, number={1}, journal={JOURNAL OF HEREDITY}, author={Walters, SA and Wehner, TC and Barker, KR}, year={1997}, pages={66–69} } @article{walters_wehner_1997, title={Evaluation of Cucumis sativus var. hardwickii cultigens for resistance to root-knot nematodes}, number={20}, journal={Report (Cucurbit Genetics Cooperative)}, author={Walters, S. A. and Wehner, T. C.}, year={1997}, pages={19} } @article{walters_wehner_1997, title={Lucia, Manteo, and Shelby root-knot nematode-resistant cucumber inbred lines}, volume={32}, number={1997}, journal={HortScience}, author={Walters, S. A. and Wehner, T. C.}, year={1997}, pages={1301–1303} } @article{schultheis_wehner_walters_1997, title={Mixtures of cucumber cultigens affect yield in a multiple-harvest system}, volume={32}, number={6}, journal={HortScience}, author={Schultheis, J. R. and Wehner, T. C. and Walters, S. A.}, year={1997}, pages={1024–1027} } @article{walters_wehner_barker_1996, title={NC-42 and NC-43: Root-knot nematode-resistant cucumber germplasm}, volume={31}, number={7}, journal={HortScience}, author={Walters, S. A. and Wehner, T. C. and Barker, K. R.}, year={1996}, pages={1246} } @article{walters_wehner_barker_1995, title={Split-root technique for multiple nematode resistance in cucumber}, number={18}, journal={Report (Cucurbit Genetics Cooperative)}, author={Walters, S. A. and Wehner, T. C. and Barker, K. R.}, year={1995}, pages={29} } @article{walters_barker_1994, title={CURRENT DISTRIBUTION OF 5 MAJOR MELOIDOGYNE SPECIES IN THE UNITED-STATES}, volume={78}, ISSN={["0191-2917"]}, DOI={10.1094/PD-78-0772}, number={8}, journal={PLANT DISEASE}, author={WALTERS, SA and BARKER, KR}, year={1994}, month={Aug}, pages={772–774} } @article{walters_barker_1994, title={Comparison of two inoculum preparation methods for Rotylenchulus reniformis}, volume={25}, number={4}, journal={Journal of Nematology}, author={Walters, S. A. and Barker, K. R.}, year={1994}, pages={778} } @article{walters_barker_1994, title={Efficacy of Paecilomyces lilacinus in suppressing Rotylenchulus reniformis on tomato}, volume={26}, number={4}, journal={Journal of Nematology}, author={Walters, S. A. and Barker, K. R.}, year={1994}, pages={600} } @article{walters_wehner_1994, title={Evaluation of the U.S. Cucumber Germplasm Collection for Early Flowering}, volume={112}, ISSN={0179-9541 1439-0523}, url={http://dx.doi.org/10.1111/j.1439-0523.1994.tb00676.x}, DOI={10.1111/j.1439-0523.1994.tb00676.x}, abstractNote={AbstractA greenhouse study was conducted to evaluate 866 cultigens (718 accessions, 38 breeding lines, and 110 new and obsolete cultivars) of cucumber (Cucumis sativus L.) for early staminate flower production. Complete data were obtained for 866 cultigens. The study was conducted on plants that were part of a root‐knot nematode experiment. Plants were grown from seeds in greenhouses in each of 3 seasons with 2 replications per season. There were significant differences for mean time of flowering over all cultigens among the 3 seasons. Days from planting to first staminate flower ranged from 26 to 45, with a mean of 35 for all cultigens. Root‐knot nematode infestation may be related to flowering, since early‐flowering cultigens had more root galling. The earliest flowering cultigen was PI 249561 (26 days to flowering); the latest was PI 470254 (45 days to flowering).}, number={3}, journal={Plant Breeding}, publisher={Wiley}, author={Walters, S. A. and Wehner, T. C.}, year={1994}, month={Apr}, pages={234–238} } @article{walters_wehner_1994, title={Evaluation of the U.S. cucumber germplasm collection for root size using a subjective rating technique}, volume={79}, ISSN={0014-2336 1573-5060}, url={http://dx.doi.org/10.1007/bf00023574}, DOI={10.1007/BF00023574}, number={1-2}, journal={Euphytica}, publisher={Springer Nature}, author={Walters, S. Alan and Wehner, Todd C.}, year={1994}, pages={39–43} } @article{walters_barker_1994, title={Reproductive and damage potentials of two populations of Rotylenchulus reniformis on sweetpotato and related comparisons with Meloidogyne javanica on tomato}, volume={25}, number={4}, journal={Journal of Nematology}, author={Walters, S. A. and Barker, K. R.}, year={1994}, pages={830} } @article{walters_wehner_barker_1993, title={Root-knot nematode resistance in cucumber and horned cucumber}, volume={28}, number={2}, journal={HortScience}, author={Walters, S. A. and Wehner, T. C. and Barker, K. R.}, year={1993}, pages={151} } @article{walters_wehner_barker_1992, title={Effects of root decay on the relationship between Meloidogyne spp. gall index and egg mass number in cucumber and horned cucumber}, volume={24}, number={4}, journal={Journal of Nematology}, author={Walters, S. A. and Wehner, T. C. and Barker, K.}, year={1992}, pages={707} } @article{walters_wehner_barker_1990, title={Resistance of cucumber to the root-knot nematode, Meloidogyne hapla}, number={13}, journal={Report (Cucurbit Genetics Cooperative)}, author={Walters, S. A. and Wehner, T. C. and Barker, K. R.}, year={1990}, pages={10} }