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以5个组合的大豆 M_5与 F_5代材料为试材,测定单株产量和百粒重。研究结果表明:除组合1外,其它4个组合的 M_5代群体平均单株产量与 F_5代无显著差异,除组合5外,其它4个组合的 M_5代群体平均百粒重与 F_5代无显著差异。但进一步分析可知,组合3,5 M_5代的单株产量有优于 F_5代的个体出现,组合2,4,5 M_5代单株百粒重有优于 F_5代的个体出现。针对产量进行选择时,组合3,4,5的 M_5代优于 F_5代,而针对百粒重进行选择时,组合2,4,5的 M_5代优于 F_5代。比较辐照杂种后代群体与原杂种后代群体的选择效果,组合间差异很大。因而在大豆育种实践中,杂交组合的选配是重要一环。
Five combinations of Soybean M_5 and F_5 were used as materials to determine the yield per plant and 100-grain weight. The results showed that except the combination 1, the average yield per plant of the M_5 generation of the other four combinations was not significantly different from that of the F_5 generation. Except for the combination 5, the other four combinations had no significant difference between the average weight of the M_5 generation and the F_5 generation difference. However, further analysis showed that individuals with a combination of 3, 5 M_5 generations outperformed those with F_5 generations, and those with a combination of 2, 4, 5 and 5 M_5 generations outperformed those with F_5 generations. For the selection of yield, M_5 generation of combination 3, 4 and 5 was better than that of F_5 generation, but M_5 generation of combination 2, 4 and 5 was superior to F_5 generation when selecting 100-grain weight. Comparison between the irradiated hybrid progeny population and the original hybrid progeny of the selection effect, the combination of very different. Therefore, in soybean breeding practice, the matching of hybrid combinations is an important part.