To explore the additive(A), epistatic(AA) and quantitative trait locus (QTL)×environment interaction effects (QE) of QTL and QTL on formation, accumulation, and stability of soybean seed across muti-developmnetal stages, muti-environments, and muti-genetic background, for deepen understanding the nature of the yield formation and accelerating the breeding process.The one aim here was to identify conditional and unconditiaonal QTLs of seed weight(delegated by 100-seed weight) expressed from 30 day to 80 day ...