不同生境下菜用大豆产量与品质性状的因子分析

Factor analysis on vegetable soybean under different environments

分别对春播和秋播的30个菜用大豆的产量与品质等性状进行因子分析,结果表明,不同播季下影响农艺产量性状的4个累积贡献率>90%的主因子中,构成第1主因子的主要是荚粒产量,第3主因子的主要是结荚高度和茎粗,第4主因子的主要是株高和茎节数;而生育期和一次分枝数在不同播季中的表达不同,春播菜用大豆第2主因子主要是生育期,秋播菜用大豆第2主因子主要是一次分枝数.不同播季下影响荚粒品质性状的4个累积贡献率>90%的主因子中,均由籽粒蛋白含量与荚粒大小因子、籽粒糖含量与荚茸毛色因子、籽粒淀粉含量与种脐颜色因子、籽粒异黄酮含量与粒宽因子构成第1、2、3、4主因子,不同播季下的差异不明显.

Factor analysis was applied to study output and quality traits of 30 vegetable soybean in spring and autumn sowing seasons. The results showed that the cumulative contribution made by the 4 main factors affecting output trait were above 90% in both sowing seasons. The first main factor was formed of pods and seeds yield, the third main factor was formed of pod setting height and stem width, the fourth was mainly formed of plant height and node number. While the express of growing period and first branch was different in both sowing seasons of vegetable soybean, the second main factor was the growing period in spring sowing, but it was the first branch in autumn sowing. For 4 cumulative contributions above 90% affecting quality trait of pod and seed in both sowing seasons, the first main factor was formed of protein content and seed size, the second was of carbohydrate content and pod villus color, the third was of starch content and seed navel color, the last was of isoflavones content and seed width. But their difference was not significant in different sowing seasons.