玉米杂交种主要农艺性状的相关和通径分析  

Correlation and Path Analysis of Major Agronomic Character of Maize Hybrids

作　　者：鲁珊[1] 毛彩云[1] 陆建章[1] 岳金生[1] 肖荷霞[1] LU Shan;MAO Caiyun;LU Jianzhang;YUE Jinsheng;XIAO Hexia(Cangzhou Academy of Agrieuhure and Forestry Sciences, Cangzhou, Hebei 061001, China)

机构地区：[1]沧州市农林科学院,河北沧州061001

出　　处：《天津农业科学》2018年第5期55-57,共3页Tianjin Agricultural Sciences

摘　　要：为了探索沧州生态类型区主要农艺性状在玉米产量构成中的相对重要性,以自主选育的128个玉米杂交组合为研究对象,通过随机区组品比试验,进行主要农艺性状的相关和通径分析。结果表明,相关分析中,产量与穗长、穗粗、行粒数和千粒质量呈极显著正相关,与穗行数呈显著正相关;通径分析中,穗粗、穗长和千粒质量对产量均有显著的正影响,秃尖对产量有显著负影响。综合说明通过适当增加穗长、穗粗、行粒数和千粒质量,减小秃尖,有利于玉米杂交种整体产量水平的提高。The correlation and path analysis of yield and agronomic traits of 128 maize combinations were made by the randomized block experiment in order to explore the relative importance of main agronomic traits in organism yield of maize in Cangzhou ecological type area. The results showed that according to the correlation analysis, the yield was very significantly correlated with ear length ear diameter row grains and 1 000-seed weight and a high positive correlation with ear rows. According to the path analysis, ear diameter, ear length and 1 000-seed weight had significant positive effects on maize yield, while the barren ear tip had a significant negative effect on maize yield. It was beneficial to increase the overall yield level of maize combinations by increasing the ear length,ear diameter, row grains and 1 000-grain quality, and reducing barren ear tip.

关 键 词：玉米 产量 农艺性状 相关分析 通径分析 

分 类 号：S513[农业科学—作物学]