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五十年代以来,欧美及日本学者在提高选择效果方面,对遗传力、遗传相关和遗传进度进行了不少研究。对于这些参数,我国学者庄巧生、沈锦骅已作了系统而简要的阐述。 研究作物数量性状的遗传力、遗传相关和遗传进度可以提高育种效率。因为这些遗传参数能够为育种提供较准确的信息,使系统选育和杂交育种工作能较好地选配亲本和确定杂种的选择时代、方式和进度。我国学者对这些遗传参数的研究,在水稻、小麦等作物方面报导较多,而在油菜作物方面报导较少。李栒、官春云曾用7个甘蓝型品种对油菜主要性状的遗传力和遗传相关进行了研究。
Since the 1950s, scholars in Europe, the United States and Japan have done a lot of research on heritability, genetic correlation and genetic progress in improving the selection effect. For these parameters, our country scholar Zhuang Qiaosheng, Shen Jinhua has made systematic and brief elaboration. Studying the heritability, genetic correlation and genetic progress of crop quantitative traits can improve breeding efficiency. Because these genetic parameters can provide more accurate information for breeding, the system breeding and crossbreeding can better select the parents and determine the selection age, manner and progress of hybrids. Chinese scholars study these genetic parameters in the rice, wheat and other crops more coverage, and less coverage in the rapeseed crop. Li Xun and Guan Chunyun studied the heritability and genetic correlation of the main characters of rapeseed with seven cabbage varieties.