研究表明各产量构成性状不仅普遍存在加性效应和显性效应 ,而且还普遍存在基因型×环境互作。但是不同性状其加性效应和显性效应所起的作用不同。其中多数性状 ,如穗实粒数、穗总粒数、千粒重、粒长、粒宽、籽粒长宽比、穗长及株高等性状的加性效应大于显性效应 ,只有单株有效穗数和单株产量两性状的显性效应大于加性效应。所有产量构成性状都存在显性×环境的互作效应 ;除粒长和长宽比两性状外 ,其余性状还存在加性×环境互作。不同性状其遗传率大小不同 ,所受环境的影响也不同 ,互作狭义遗传率大的所受环境的影响就大。一般而言 ,除有效穗数和单株产量外 ,其余性状的遗传率都以普通狭义遗传率为主 ,互作狭义遗传率较小 ,其中粒长和长宽比两性状的互作狭义遗传率接近于零。除千粒重与有效穗数及穗总粒数之间没有检测到显著的相关性外 ,其余产量构成性状之间都存在遗传相关 ,多数性状之间以显性相关为主 ,但加性相关也达到显著或极显著水平 ;环境条件对各产量性状遗传相关的影响主要表现为加性×环境互作相关 Studies have shown that the yield traits not only the existence of additive and dominance effects, but also widespread genotype × environmental interactions. However, the additive effects and the dominant effects of different traits are different. Among them, the additive effects of most traits such as grain number per panicle, total grain number per panicle, 1000-grain weight, grain length, grain width, grain length-width ratio, ear length and plant height were greater than those of dominant effect. The two traits per plant yield more than the additive effect of the dominant effect. All yield traits have dominant × environmental interactions; except grain length and aspect ratio, the rest of the traits still have additive × environmental interactions. Different traits of their heritability rates are different, affected by the impact of the environment is also different, intercourse with a narrow heritability of large affected by the impact of the environment is large. In general, except for the effective panicles and the yield per plant, the heritability of the remaining traits was dominated by the general heritability and the heritability of the interaction was narrow, in which the interaction between the grain length and the aspect ratio was narrowly inherited Rate is close to zero. Except for no significant correlations between 1000-grain weight and panicle number and panicles per panicle, there were genetic correlations among the traits of other yield components. Most of the traits were dominated by dominant correlations, but the additive correlations were also reached Significant or extremely significant level. The effects of environmental conditions on the genetic correlations of yield traits were mainly as follows: additive × environmental interaction