The additivegeneticvariance of the same character, estimated from the covariance of half sibs, was 0. 9602.
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。
2
The variance component analysis revealed that the ratios of additivegeneticvariance to phenotypic variance of the majority of economic traits were high.
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。
3
Special attention should be given to the decrease of the additivevariance of yield trait, and this will most possibly make genetic background narrow.