玉米自交系产量与光合相关性及灰色关联分析

为研究玉米产量构成因子、光合性状与产量的相关性及密切程度,应用灰色关联分析方法,对180份生产上常用玉米自交系光合性状("棒三叶"叶面积、全株叶数)与产量性状的相关性及灰色关联度进行分析。结果表明:光合性状与百粒重、株高和穗位等性状的相关性较强,而与穗粗、行数和行粒数等性状的相关性较弱。灰色关联分析结果表明全生育期、百粒重、株高和全株叶数对单株粒重的影响较大,对穗长、穗位和棒三叶叶面积的影响次之,对穗粗、行粒数、行数的影响很小。

Grey Relevant Analysis Photosynthetic Traits of between Yield and Maize Inbred Lines

In order to analyze the correlation between yield components, photosynthetic characteristics and yield of maize,grey relevant analysis was used to research the photosynthetic traits（leaf area of three ear leaves and leaf number）of 180 maize inbred lines which usually used in the market,that affected the yield of maize inbred lines with grey associational relevant analysis. The results showed that：there was a strong correlation between photosynthetic traits and 100-seed weight, plant height and panicle height, which there was weak correlation between photosynthetic traits and panicle diameter, row number per panicle and seed number per row. The grey relevant analysis indicated that growth duration, 100-seed weight, plant height and leaf number per plant had great effects on seed weight per plant,followed by panicle length,panicle height and leaf area of three ear leav- es, while panicle diameter, seed number per row and row number per panicle had slight effects on seed weight per plant.