油菜是重要的油用作物,其主要农艺性状一般属数量性状,受多基因控制,受环境因素影响甚大,影响程度因其遗传基础不同而异,且各性状之间存在着不同程度的相关,这就给目前根据表型进行选择的育种工作带来困难,李加纳等讨论了各性状的遗传力及典范相关分析,但一些关于油菜数量遗传基础的研究,尚未涉及,本文应用本所新选育的5个优质甘蓝型油菜品种（品系）,通过遗传参数的估算,分析这些品种主要性状的遗传规律,为油菜育种提供参考。 材料和方法 试验于1991～1992年度在福州本所试验场进行,试验材料为福油1号、福油2号、福油 Rapeseed is an important oilseed crop. The main agronomic traits are generally quantitative traits, controlled by multiple genes, greatly influenced by environmental factors, the degree of influence depends on their genetic basis, and there are different degrees of correlation between the traits, This has made it difficult for the current breeding based on the phenotype. Li Gana et al. Discussed the heritability of the traits and the canonical correlation analysis. However, some studies on the genetic basis of the number of rapeseed have not been discussed yet. Five high quality Brassica napus cultivars (lines) were bred. The genetic rules of the main traits of these cultivars were analyzed by genetic parameters estimation, which provided reference for rapeseed breeding. Materials and methods of testing in 1991 to 1992 in Fuzhou, the test site, the test materials for the blessing oil 1, blessing oil 2, blessing oil