Grain shapes were in normal distribution, which characterized the trait of quantitative inheritance.
米形呈现正态分布的数量性状遗传特点。
Due to the existence of multiple species and RACES, and the quantitative inheritance of resistance, breeding for resistance to the pathogen has been slow.
由于该病病原菌存在多个种和小种以及对该病的抗性呈数量性状遗传，因此通过育种途径来改良抗性进展缓慢。
A mathematical approach to several problems of quantitative character inheritance is presented in this paper.
本文对数量性状遗传的某些问题从数学上进行了整理。
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