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选用不同株型、叶型的小麦品种 (系 ) 1 0个 ,研究了上三叶配置比例特点及与产量性状的相关、遗传参数和选择效果。结果表明 :不同类型品种 (系 )的上三叶配置比例各不相同 ,旗叶、倒二叶、倒三叶的长宽比值与产量呈正相关 ,旗叶与倒二叶、倒三叶的长度之比、宽度之比、面积之比与产量呈负相关 ,探讨了小麦上三叶配置比例在株型育种和高产育种中的应用
A total of 10 wheat cultivars (lines) with different plant types and leaf types were selected to study the characteristics of the allocation ratio of the upper three leaves and their correlation with yield traits, genetic parameters and selection effects. The results showed that the proportions of the upper three leaves of different varieties were different, the ratio of length to width of flag leaf, inverted leaf and inverted leaf was positively correlated with the yield of flag leaf, inverted leaf and inverted leaf Ratio, breadth ratio, area ratio and yield was negatively correlated, and the application of the allocation of the upper three leaves of wheat in plant type breeding and high-yield breeding was discussed