生育期是玉米育种的重要目标性状。前人对玉米生育期基因效应所作的一些报道,结论不尽相同。在生育期的相关性方面研究较多,但偏重于同一生育阶段亲子间的相关和同一世代不同生育阶段间的相关。玉米主茎叶数与生育期,特别与开花期有非常密切的关系,但对其基因效应却研究不多。为进一步明确玉米生育期方面有关性状的基因效应,本文利用遗传基础较广泛的材料,用不同的方法 The growth period is an important target trait of maize breeding. Some reports on the gene effect of maize growth period have different conclusions. There are more researches on the relativity of growth period, but the emphasis is on the correlation between parent-child relationship in the same fertility stage and the different fertility stages in the same generation. The number of main stems and leaves of maize has a very close relationship with the growth period, especially with the flowering stage, but few studies on its gene effect. In order to further clarify the genetic effects of traits related to maize growth stage, this paper uses a wider range of genetic material, using different methods