熟期选择对大豆轮回群体质量、数量性状及不育率的影响

 在大豆轮回群体中根据熟期选择后，其下一群体成熟期间差异仍然十分明显而与上一轮相似。主要质量性状如茸毛色、叶形、茎色、花色等在早熟及晚熟群体中出现比率基本相同，表明质量性状的表现与熟期无关，熟期也不影响群体中不育株率。熟期影响数量性状的平均数及变异数，晚熟群体生物量、产量及其构成性状的平均数、变异数较早熟群体大。同一轮回世代中按熟期选择的未繁殖的亚群体性状表现并不完全符合这种规律。本文还对轮回群体用于研究性状间关系的作用进行了讨论。

Effect of Maturity Selection in a Soybean Recurrent Population on Morphological and Agronomic Traits and Ratio of Male-sterile Plants

The objectives of this study were to reveal the relation of maturity with morphological and agronomic traits through selection in a synthesized population of early and late mature plants. It showed that time of maturity between early and late maturity populations were different, maturity had no relation with morphological traits and ratio of male sterility plants, but had strong relation with agronomic traits, which affected means and standard deviations of such characters as biomass, yield and its components, means and standard deviations of the above characters of late maturity population were higher than those of early one. Discussion was made on advantages of using the recurrent selection population as material for studying relation between traits.