论文部分内容阅读
研究小麦的早熟性的遗传规律,对于选配亲本组合,杂种后代的选择,提高育种效果都具有重要的意义。小麦早熟性遗传的研究,近年来进展较快,提出了:小麦亲、子间的平均抽穗期关系密切,可依亲本抽穗期预测杂种的早晚;抽穗期的遗传力为最高;发现以早熟亲本做母本的较以晚熟亲本做母本的显著早熟,尤以双亲差异大的更为明显;利用抽穗期不同的亲本杂交,F_1居中偏早,F_2连续变异,属于数量性状;通过单体分
Studying the genetic law of wheat precocity is of great significance for the selection of parental combinations, selection of hybrid offspring and improvement of breeding effects. The research on wheat premature inheritance has progressed rapidly in recent years. It is proposed that the average heading date of wheat progeny and the seed is closely related to predict the hybrid sooner or later. The hereditary power of heading date is the highest. The maternal parent was significantly more precocious than the late-maturing parent, especially the big difference between the two parents. Using the different parental hybrids at heading stage, F_1 was middle-aged and F_2 was continuous variation and was a quantitative trait.