结球甘蓝主要商品性状与农艺性状的遗传相关分析

以6个甘蓝亲本进行完全双列杂交,采用加性-显性遗传模型对结球甘蓝的主要商品、农艺性状进行遗传分析。结果表明:各性状的遗传同时受加性效应和显性效应的作用,株高、外叶数主要受加性效应控制;开展度、单球重、帮叶比、中心柱/球高主要受显性效应控制。相关分析表明,开展度-株高、开展度-单球重、外叶数-帮叶比等成对性状成显著正相关,利用株高可对帮叶比、中心柱/球高进行间接选择。

Genetic and correlation analyses of commercial and agronomic characters of head cabbage

The complete diallel cross of 6 head cabbage parents was carried out and genetic analyses of main commercial and agronomic characters of them were made by means of an additive-dominance genetic mod- el.The results showed that the inheritance of various characters was controlled by both additive and dominant effects,but the plant height and the number of outer leaves were controlled mainly by an additive effect,and the angular divergence,head weight,petiole/leaf weight ratio and central column/head height ratio were controlled mainly by an dominant effect.The correlation analysis showed that the correlations between the angular diver- gence and plant height,between the angular divergence and head weight and between the number of outer leaves and petiole/leaf weight ratio were significantly positive,and the petiole/leaf weight ratio and central column/head height ratio could be improved by indirect selection based on plant height.