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本试验对长江下游地区各有关单位新育成的9个甘蓝型油菜品种(系)的8个主要经济性状的遗传力、遗传相关和通径系数进行了分析,结果表明,一次分枝角果数、主花序角果数和千粒重易受环境因素影响;遗传相关和通径分析表明,对原有品种(系)进行改良,8个主要经济性状对单株产量的相对重要性依次为:每角果粒数>主花序有效长>主花序角果数>二次分枝角果数>一次分枝角果数>千粒重>二次分枝数>一次分枝数。
In this study, the heritability, genetic correlation and path coefficient of eight major economic traits of nine newly cultivated Brassica napus cultivars (lines) newly developed by the relevant units in the lower reaches of the Yangtze River were analyzed. The results showed that the number of primary shoots , The main inflorescence pod number and the 1000-grain weight were easily affected by environmental factors. The genetic correlation and path analysis showed that the relative importance of the eight main economic traits to the yield per plant was as follows: Number of fruit grains> Effective length of main inflorescence> Number of inflorescences of main inflorescences> Number of secondary branches> Number of primary branches> 1000-grain weight> Number of secondary branches> Number of primary branches.