Evaluation of Seed Traits for Cotton Cultivar Crossed by Chromosome Substitution Lines

Investigation of cotton seed nutritional components is of importance because seeds provide an important nutritional profile and possibly serve as a biofuel resource. In this study, we evaluated five cultivars, 13 cotton chromosome substitution (CS-B) lines, their donor parent, ‘3-79’, and their recurrent parent, ‘TM-1’, and their 75 F3 hybrids for seed traits over four environments. Seed protein, oil, and fiber contents were analyzed subject to the additive-dominance (AD) genetic model. Genetic variations regarding additive effects and dominance effects were estimated and genetic effects in the forms of parent and hybrid were predicted as well. The results shall reveal the genetic differences between cultivars and CS-B lines and genetic associations with chromosomes or chromosome arms regarding these seed traits. The detailed results for a better genetic understanding of these seed traits and related to seed traits improvement will be reported.