小麦上三叶配置比例对产量性状的影响

Effect of the Disposal Ratios of Upper Leaves on Yield Characters in Wheat

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 。

Ten winter wheat cultivars with different ideotypus were studying the disposal ratio properties of upper leaves and the correlations between them and yield characters, their heredity parameters,selective effects. The results showed that various cultivars were different in disposal ratios of upper leaves, There were positive correlations between the length/width ratios of upper leaves and grain yield,negative correlations between the length ratios,width ratios,area ratios of upper leaves and yield potential respectively.The application of disposal ratios of upper leaves in ideotype-breeding and high-yield-breeding were discussed.