关键词: 大豆, 大豆, 灰色系统, 杂交组合, 灰色评判

Abstract:

The correlation between leaf character and fruit character in hybrid progeny of fragrant pear were studied, early stage selection was conducted in hybrid progeny of fragrant pear by leaf character. The correlations among different leaves of vegetative shoot character, branches character and fruit character in the progeny of 12 fragrant pear cross combinations were studied, the results showed that the significant or very significant positive correlation were presented among single fruit weight, fruit horizontal diameter, fruit vertical diameter, fruit-type index and other characters in hybrid progeny of fragrant pear. It showed different correlation with leaves characters on the basal part, the middle part, the top part of vegetative shoot. Leaf index of basal leaves was significantly positively correlative with fruit vertical diameter and single fruit weight. The very significant negative correlation was presented between leaf area of middle leaves with fruit core size, and the prominent positive correlation was presented between fruit horizontal diameter. The very significant negative correlation was presented between leaf width with fruit core size. Leaf area of top leaves and leave width were significantly negatively correlative with fruit core size. Internode length of vegetative shoot was significantly positively correlative with single fruit weight, fruit horizontal diameter and fruit vertical diameter. The regression equation also can be used to forecast seedling stage and sapling stage.