本文建立了母体参数 的坐标参考系；
This paper establishes the parameters of mother-to coordinate reference system;
作物母体效应(M)是作物遗传育种中一重要参数。采用正反交f 1性状差异，测定出母体效应方差。
Crop maternal effect (m) is an important parameter in crop heredity and breeding, and can be determined from the difference between reciprocal crosses in F1 generation.
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