Identification and analysis of major maturity genotypes in soybean
Soybean is a photoperiod sensitive crop.The maturity of soybean is not only affected by environmental con-ditions,but also regulated by genetic factors.At present,E1-E12 and J genes were found to regulate the flowering and ripe-ning of soybean,among which E1-E4 were the main genes regulating the flowering and ripening of soybean.In this study,250 soybean materials with E1-E4 genotypes and flowering and maturity phenotypes were identified.Association analysis showed that E1 and E3 genes were most closely related to the first flowering and maturity stages.Dominant E1 and E3 genes delayed flowering,while recessive variation caused early flowering due to partial or complete loss of function.In this study,soybean genotype combinations could be divided into 10 groups,namely e1-nle2e4,e1-nlE2E3e4,e1-nle2E4,e1-nlE2E4,e1-asE2E4,e2e3e4,e1-ase2E4,E1e2E4,E1E2e3e4,E1E2E4.Different genotype combinations determined the diversification of soybean growth period and its adaptability to different ecological zones.The results of this study provide a molecular prediction model for molecular design breeding,which is important for breeding soybean varieties in specific ecological zones.
soybeangrowth periodgenotypemolecular breeding model