不同结荚习性大豆品种综合生产力的分析评价

采用灰色关联度分析法对不同结荚习性大豆的综合生产力进行了两年的综合评价研究。结果表明，在一般肥力条件下，亚有限型结荚习性大豆综合生产力优于有限型结荚习性大豆。亚有限型大豆辽豆14号的产量及综合生产力都显著优于其他品种（系）。而在育种目标相似的情况下，不同结荚习性大豆间产量差异不显著。对不同结荚习性大豆来说，产量构成主导因素均是单株荚数、单株分枝荚数。努力提高大豆单株荚数是今后大豆育种的主攻方向。

Evaluation on Comprehensive Productivities of Soybean Varieties with Different Growth Habits through Gray Correlation Degree Analysis

The experimental results in 1999 and 2000 showed that it was a teasible way to evaluate soybean comprehensive productivities through the gray linkage degree analysis. Semi-determinate soybeans performed better than determinate soybeans in the middle fertility conditions. The yield and comprehensive productivity of Liaodou 14 cultivar with semi-determinate growth habit surpassed other varieties. The yields of different growth habit soybeans had no obvious difference under the same goal of breeding. However, branch pod number and pod number per plant of different growth habit soybean played leading roles in soybean yield. Increasing pod number per plant would be the main orientation in soybean breeding in the future.