尽管姊妹系和姊妹种的遗传成分在组合表型总方差中所占比例较小，但其在穗部各性状之间仍存在较大分歧。

The genetic constitution of sister line and sister species made up the smaller proportion of the total crosses variance, but it had larger differences among the ear characters.

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结果表明，协方差函数可以反映出体重在连续的年龄尺度上的遗传和表型变异。

The results showed that covariance functions could reflect the changes of genetic and phenotypic variation for body weight in continuous scale of age.

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