由基因的加性效应造成的方差，是遗传方差的一部分。
千粒重性状非加性遗传方差更为重要。
And for the character of 1000 grain weight, non additive effect was more important than that of additive.
进一步的方差组分估计表明，主要经济性状的加性遗传方差较大。
The variance component analysis revealed that the ratios of additive genetic variance to phenotypic variance of the majority of economic traits were high.
从半同胞协方差估计出来的，同一性状的加性遗传方差为0.9602。
The additive genetic variance of the same character, estimated from the covariance of half sibs, was 0. 9602.
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