关键词: 种子, 种子, 老化, 活力修复

Abstract: In order to make good use of wheat breeding resources, agronomic and quality characters of 19 Mianmai-series wheat were analyzed. The correlation analysis showed there were complex relations between agronomic and quality characters. There was significant or extremely significant correlation between 13 pairs of characters. There was significant or extremely significant partial correlation between 23 pairs of characters. The order of 8 agronomic characters influencing yield was basic seedling number > 1000-kernel weight > kernels per ear > test weight > plant height > maximum seedling number > growth period > ears per hm². The order of 6 quality characters influencing yield was stability time > maximum resistance > kernel protein content > extension area > water absorbing rate > wet gluten content. The order of 9 agronomic characters influencing kernel protein content was maximum seedling number > ears per hm² > basic seedling number > kernels per ear > yield > test weight > 1000-kernel weight > plant height > growth period. The order of 9 agronomic characters influencing stability time was test weight > maximum seedling number > yield>growth period > ears per hm² > 1000-kernel weight > plant height > basic seedling number > kernels per ear. The order of 9 agronomic characters influencing extension area was basic seedling number > kernels per ear > 1000-kernel weight > yield > plant height > maximum seedling number > ears per hm² > growth period > test weight. By clustering analysis, all tested materials from agronomic and quality characters were divided into three classes. ClassⅠ₂, classⅠ₃ and classⅠ₄ could be used as high material of breeding, classⅠ₃ and classⅠ₄ could be used as dwarf wheat materials, classⅠ₁, class Ⅰ₄ could be used as quality breeding materials. ClassⅡ could be used as grain-weight materials. Class Ⅲ could be used as quality dwarf wheat materials.