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Correspondence to Author:  Shekoofa*, Rictoria, Dripa Dakal, Usha Poudel, Santalone. 

Department of Plant Sciences, University of Tennessee, 2505 E.J. Chapman Dr., Knoxville, TN 37996, USA.

Abstract: Crop growth and yield are decreased by drought conditions, which cause a variety of physiological and morphological changes in crops. Finding and choosing genotypes that are most suited to restricted water availability under particular environmental conditions can be a useful tactic to lessen the detrimental effects of drought stress on soybean (Glycine max L. Merr.) production. This study used a population of recombinant inbred lines (RILs) produced from a cross between N09-13890 and Ellis to evaluate the inheritance of early stomatal closure traits in soybeans. Using a dry-down experiment, thirty soybean lines were exposed to increasing levels of water-deficit stress. The experiment was carried out in a controlled setting at the University of Tennessees West Tennessee Research and Education Center (WTREC) in Jackson, Tennessee, between June and November 2022.The early stomatal closure thresholds of several soybean lines were found to differ significantly in this investigation. The 30 tested lines fraction of transpirable soil water (FTSW) thresholds varied from 0.18 to 0.80, where a decrease in transpiration with soil drying was noted. The FTSW threshold values for nearly 65% of the RILs ranged from 0.41 to 0.80. These findings, which show inheritance, support the high level of early stomatal closure trait expression in progeny lines during cultivar development under water-deficit stress conditions. Thus, identifying the differences in genotypes of water use and their response to water-deficit stress conditions can provide a foundation for selecting new cultivars that are best adapted to arid and semi-arid agricultural production systems.

Citation:

Shekoofa. The Trait Of Early Stomatal Closure In Soybeans Is Inherited By The Ellis N09-13890 Population. Journal of Advances in Plant Sciences 2025.