@article{seversike_sermons_sinclair_carter_rufty_2013, title={Temperature interactions with transpiration response to vapor pressure deficit among cultivated and wild soybean genotypes}, volume={148}, ISSN={["1399-3054"]}, DOI={10.1111/j.1399-3054.2012.01693.x}, abstractNote={A key strategy in soybean drought research is increased stomatal sensitivity to high vapor pressure deficit (VPD), which contributes to the ‘slow wilting’ trait observed in the field. These experiments examined whether temperature of the growth environment affected the ability of plants to respond to VPD, and thus control transpiration rate (TR). Two soybean [Glycine max (L.) Merr.] and four wild soybean [Glycine soja (Sieb. and Zucc.)] genotypes were studied. The TR was measured over a range of VPD when plants were growing at 25 or 30°C, and again after an abrupt increase of 5°C. In G. max, a restriction of TR became evident as VPD increased above 2.0 kPa when temperature was near its growth optimum of 30°C. ‘Slow wilting’ genotype plant introduction (PI) 416937 exhibited greater TR control at high VPD compared with Hutcheson, and only PI 416937 restrained TR after the shift to 35°C. Three of the four G. soja genotypes exhibited control over TR with increasing VPD when grown at 25°C, which is near their estimated growth optimum. The TR control became engaged at lower VPD than in G. max and was retained to differing degrees after a shift to 30°C. The TR control systems in G. max and G. soja clearly were temperature‐sensitive and kinetically definable, and more restrictive in the ‘slow wilting’ soybean genotype. For the favorable TR control traits observed in G. soja to be useful for soybean breeding in warmer climates, the regulatory linkage with lower temperatures must be uncoupled.}, number={1}, journal={PHYSIOLOGIA PLANTARUM}, author={Seversike, Thomas M. and Sermons, Shannon M. and Sinclair, Thomas R. and Carter, Thomas E., Jr. and Rufty, Thomas W.}, year={2013}, month={May}, pages={62–73} } @article{seversike_purcell_gbur_chen_scott_2009, title={Radiation Interception and Yield Response to Increased Leaflet Number in Early-Maturing Soybean Genotypes}, volume={49}, ISSN={["1435-0653"]}, DOI={10.2135/cropsci2007.08.0472}, abstractNote={ABSTRACT}, number={1}, journal={CROP SCIENCE}, author={Seversike, Thomas M. and Purcell, Larry C. and Gbur, Edward and Chen, Pengyin and Scott, Roy}, year={2009}, pages={281–289} } @article{seversike_ray_shultz_purcell_2008, title={Soybean molecular linkage group B1 corresponds to classical linkage group 16 based on map location of the lf(2) gene}, volume={117}, ISSN={["0040-5752"]}, DOI={10.1007/s00122-008-0759-6}, abstractNote={The seven-leaflet character of soybean [Glycine max L. (Merr.)] is a single recessive trait conditioned by the lf ( 2 ) gene. The lf ( 2 ) gene is located on linkage group (LG) 16 of the classical soybean genetic map, but it has not been placed on the molecular map. The objective of this research was to identify the location of the lf ( 2 ) gene on the soybean molecular map using simple sequence repeat (SSR) markers. A backcross breeding method was used to create three- and seven-leaflet near-isogenic lines in genetic backgrounds of 'Traill', 'MN1401', and 'MN1801'. Eight mapping populations were derived from eight single heterozygous Lf ( 2 ) lf ( 2 ) plants. A total of 482 SSR markers that covered approximately every 10-20 cM of all soybean molecular LG were used to screen the mapping populations for polymorphisms. For the 115 SSRs that were identified as polymorphic, possible linkage between the lf ( 2 ) gene and the polymorphic SSR markers was determined. One SSR marker from the LG B1, Sat_272, was linked (LOD > 4.0) to the lf ( 2 ) gene in the Traill and MN1401 derived populations, with map distances ranging from 2.8 to 11.2 cM. Two additional markers (a SSR, Sat_270 and a SNP, A588c) located on LG B1 were also polymorphic and were identified as linked to the lf ( 2 ) gene in one of the populations. This research was successful in mapping the lf ( 2 ) gene to LG B1 of the soybean molecular map and therefore, provides evidence that molecular LG B1 corresponds to classical LG 16.}, number={2}, journal={THEORETICAL AND APPLIED GENETICS}, author={Seversike, Thomas M. and Ray, Jeffery D. and Shultz, Jeffry L. and Purcell, Larry C.}, year={2008}, month={Jul}, pages={143–147} }