大豆主要农艺性状间的相关性分析

Correlation Analysis of Major Agronomic Traits in Soybean

选用中黄24×华夏3号衍生的含有169个F7:8株系的重组自交系群体进行大豆生育期与农艺性状及各农艺性状间的相关分析。结果表明:营养生长期与株高、主茎节数、分枝数、荚数呈极显著正相关,与百粒重呈极显著负相关;生殖生长期与分枝数、荚数呈极显著负相关,与百粒重呈显著正相关;全生育期与株高、主茎节数、分枝数、荚数均呈极显著正相关。株高与主茎节数、分枝数、百粒重均呈极显著正相关,主茎节数与分枝数、有效荚呈极显著正相关,分枝数与百粒重呈极显著负相关。因此,从生育期的角度进行选种时,可以适当选择营养生长期较长,生育期结构又比较合理的品种,在以提高大豆产量为目标时,要综合考虑各种限制因素,选择植株高度和分枝数适中、结荚数多,同时兼顾百粒重较大的类型。

A F7：s population with 169 lines derived from a cross of Zhonghuang 24 × Huaxia 3 were selected and the correlations of growth stage with agronomic traits and all major agronomic traits in soybean were analyzed. The main results obtained were as follows ： Vegetative stage was very significantly positive correlated with plant height, number of stem nodes, branches and pods per plant,but very significantly negative correlated with 100-seed weight. Reproductive stage was very significantly negative correlated with number of branches and pods, but significantly positive correlated with 100-seed weight;Growth duration was very significantly positive correlated with plant height, number of stem nodes, branches and pods per plant. Plant height was very significantly positive correlated with number of stem nodes, branches and 100-seed weight; The number of stem nodes was very significantly positive correlated with branches and effective pods;100-seed weight was very significantly negative correlated with number of branches per plant. So the selection from the point of growing period, we may make a suitable choice to prolong soybean vegetative stage with a suitable growth stage structure,it should consider all the limit factors in order to improve the soybean yield, and select a variety that has a suitable plant height and branches, and pay attention to the 100- seed weight at the same time. Key words： Soybean ; Correlation ; Growth period structure ; Agronomic trait