河南大豆主要数量性状与产量的相关和通径分析

Correlation and Path Analysis of Main Quantitative Traits and Yield of Soybean in Henan Province

对河南省大豆的6个主要数量性状与产量进行相关分析,结果表明:生育期与产量达极显著正相关;百粒重、单株粒数与产量达显著正相关;株高、单株荚数、总分枝数与产量相关性不显著。通径分析结果表明:6个主要数量性状与产量的直接通径系数顺序依次为:生育期>百粒重>单株粒数>有效分枝>株高>单株荚数。大豆育种,应注重选育生育期适中、百粒重大、单株荚数、粒数、有效分枝多的大豆新品种。

The correlation analysis of six main quantitative traits and yield of soybean in Henan province indi- cated that： yield was very significantly positive correlated with growth pe number of grain per plant was significantly positive correlated with yield. the total number of branches per plant and yield correlation was not s riod, and lO0-grain weight and the Plant height, while ignificant. Resuhs pod number and of path analysis showed that： the sequence of direct path coefficient between six main quantitative traits and yield was growth period〉 l O0-grain weight〉number of grain per plant〉effective branches〉plant height〉pad number. Soybean breeding should pay more attention on moderate growth period, large seed weight, more pods, more grains, and more effective branches for new soybean varieties.