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对上海、江苏、浙江和安徽有关单位最近育成的甘蓝型单、双低油菜品种(系)的产量能力分析表明,低芥酸油菜品系8907,低芥酸、低硫代葡萄糖甙品系3108和低硫代葡萄糖甙品系鉴6较适应上海的生态条件,产量能力均比大面积常规推广品种中油821和汇油50高,产量差异达1％极显著水平。对产量构成因素间的遗传相关和通径系数分析表明,对现有单、双低油菜品种(系)进行筛选和改良,应保持或略减少现有主花序角果数和一次分枝角果数的水平,从严控制二次分枝角果数,适当减少每角果粒数而增加千粒重,对选育适合上海生态条件的单、双低高产油菜品种(系)有显著的效果。分析表明,8907是一个高产、优质,特别适于上海生态条件的油菜新品系。
Analysis of yield capacity of the cabbage type single and double low rape varieties (lines) newly bred by Shanghai, Jiangsu, Zhejiang and Anhui authorities showed that low erucic acid lines 8907, low erucic acid, low glucosinolate lines 3108 and low Compared with the ecological conditions in Shanghai, the yield of glucosinolates of glucosinolates 6 was significantly higher than that of the conventional large-scale popularized varieties CNPC 821 and Huiyuan 50, with a difference of 1% in yield. Genetic correlation and path coefficient analysis of yield components showed that screening and improving existing single and double low rape varieties (lines) should maintain or slightly reduce the number of existing main inflorescence pods and primary shoots The results showed that the control of the number of secondary branches and pods, the proper reduction of the number of pods per hill and the increase of 1000-grain weight had significant effects on the breeding of single and double-low high yield rapeseed lines suitable for Shanghai ecological conditions. The analysis shows that 8907 is a new rapeseed with high yield and good quality, especially suitable for Shanghai ecological conditions.