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本研究于1957年以生育期不同的六个品种,进行了八个不同组合的杂交(表3)。于F_1世代记载了成熟期等性状。于 F_2世代大豆开始成熟时,按不同成熟期组(每五日为一组)分别收获,各组并分别混合脱粒。次年自每成熟期组按组的大小比例随机抽取一定量的 F_2种籽分别种下。于 F_3世代成熟时,除将各组合的各成熟期组材料,仍按不同成熟期分批收获外,对于“东农47-1 G×丰地黄”组合,还记载了开花期株高等性状,以作为
In this study, in 1957, eight different combinations of hybrids (Table 3) were made in six different growth stages. F_1 generation recorded the maturity and other traits. When the F2 generation soybean began to mature, the harvested seeds were harvested at different maturity stages (once every five days), and the groups were separately mixed and threshed. The next year from each mature group according to the size of the group randomly selected a certain amount of F_2 seeds were planted. At F_3 generation maturity, except for the maturity stage of each combination of materials, but still at different maturity stages of harvest, for the “Dongnong 47-1 G × Rehmanniae” combination, also recorded the flowering stage of higher traits, use ... as