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用高之仁（１９８６）和Ｇａｎｓｅｔ（１９８２）等的方法以籼稻粒叶性状的两两比值作为一个性状进行比值遗传力及遗传相关性研究结果表明：（１）籽粒长宽的遗传力较高，籽粒可作为水稻遗传多样性的评价指标。（２）粒叶性状间的比值遗传力较高，尤其是粒长／粒宽，因此籽粒性状是水稻遗传多样性的缩影。（３）叶片大小与千粒重及其相互关系可作水稻“源流库”关系的评价指标。（４）比值遗传力与遗传相关系数呈负相关
The results showed that: (1) The grain length and breadth had a high heritability, and grain weight (grain weight) Can be used as an indicator of genetic diversity in rice. (2) The ratio of grain-leaf traits is more heritability, especially grain length / grain width. Therefore grain traits are the epitome of rice genetic diversity. (3) Leaf size and 1000-grain weight and its correlation can be used as evaluation index of rice “source reservoir” relationship. (4) Ratio of heritability and genetic correlation coefficient was negatively correlated