论文部分内容阅读
大豆为自交作物,在一般情况下,天然杂交率为0.36％左右。因此,大豆品种间在遗传上便普遍地存在着不同程度的差异,而且这种差异是相对地稳定持久的。在这个基础上,大豆品种间的杂交种第一代,便在遗传上具有不同程度的杂合性,从而在不同程度上,便表现了显明的杂种优势现象。Leffel及Weiss(1958)用10个亲本进行了45种可能的杂交组合,研究结果指出,产量与株高均表现完全显性至超显性现象,从而表现具有显明的杂种优势;油份及种粒大小,表现部分显性;开花期、成熟期、开花至成熟日数、蛋白
Soybean self-crop, in general, the natural hybridization rate of about 0.36%. Therefore, there is a wide range of genetic differences between soybean varieties in varying degrees, and this difference is relatively stable and lasting. On this basis, the first generation of hybrids among soybean varieties has a hereditary heterogeneity of heterogeneity, so that to some extent, the phenomenon of obvious heterosis appears. Leffel and Weiss (1958) conducted a total of 45 possible crosses with 10 parents. The results indicated that both the yield and the plant height showed a complete dominant to super-dominant phenotype, which showed the obvious heterosis. Oil and species Particle size, the performance of part of the dominant; flowering, maturity, flowering to mature days, protein