秦巴山区玉米杂交组合主要性状与产量间的灰色关联度分析

运用灰色系统理论中杂交组合灰色评判原理与方法,对60个玉米组合的产量和9个产量因素进行灰色关联分析及综合评判,以明确不同玉米杂交组合产量和产量构成因素之间的关系。结果表明:秦巴山区玉米杂交组合产量与主要农艺性状的关联度大小排序为穗粗>百粒重>穗长>穗位高>穗行数>行粒数>出子率>株高>秃顶长。组合46综合性状最好(G=0.881),组合52次之(G=0.861),组合54综合性状最差(G=0.552),综合评判结果与杂交组合在生产实际中表现基本一致。

Analysis of Grey Correlated Degree Between Property and Yield Factors of Maize Hybrid Lines in Qinba Mountain

Using the grey correlation evaluation principle and method in hybrid combination based on the grey system theory,we had a comprehensive evaluation on grey relevance between yield and 9 yield factors of 60 maize combinations in order to identify the relationship between yield and yield components among those different hybrids of maizes.Results showed that the order of relavent degree of yield to agronomic traits for maize hybrids in QinLing mountain is ear diametre>100-grain weight>ear length>height of ear position>rows per ear>Kernels per row>Kernel rate>Plant height>length of barren ear tip.Combination 46 had the best comprehensive property(G=0.881),combination 52 was the second best(G=0.861),however combination 54 had the worst comprehensive character(G=0.552).This comprehensive grey evaluation results were significantly consistent with the actual agricultural production,which could be used in the selection of good hybrid combinations for high yield and high resistence to the environmental stress.