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有性杂交育种方法在大豆育种中是非常普遍的。分析当前的所有育种手段,国内外大部分采用的都是人工去雄授粉。但是因为大豆花呈蝶形花,体积较小,一般才只有6~7mm,所以采用去雄传粉比较困难。因此,在大豆开花的季节,各育种单位都要投入大量的人力、物力来协助杂交,但是最终结果并不理想,得出的种子数量仍然很少。一般的大豆杂交结实率只在10%——15%左右。所以,为了增加大豆结实率,改善农作物的选育程度,本文对产生低结实率的原因以及改进办法做了进一步研究与探讨。
Sexual breeding methods are very common in soybean breeding. Analysis of all current breeding methods, most of the domestic and foreign are artificial to male pollination. However, because the flower was butterfly flowers, smaller, generally only 6 ~ 7mm, so the use of male to powder more difficult. Therefore, in the flowering season of soybean, all breeding units have to invest a lot of manpower and material resources to help hybridization, but the end result is not satisfactory, and the number of seeds drawn is still small. General soybean hybrid seed set rate of only 10% - 15%. Therefore, in order to increase the seed setting rate of soybean and improve the selection of crops, this paper further studies and discusses the reasons for the low seed setting rate and the improvement measures.