旱地不同玉米品种穗部性状与产量关系的综合分析  

Comprehensive Analysis on Ear Characters and Yield of the Different Maize Varieties in Dryland Area

作　　者：陈刚[1] 张中东[2] 王璞[1] 陶洪斌[1] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100093 [2]山西省农业科学院玉米研究所,山西忻州034000

出　　处：《作物杂志》2012年第5期100-104,共5页Crops

基　　金：公益性行业(农业)科研专项(201203031)

摘　　要：对45个玉米杂交种的8个穗部性状指标与产量之间的关系进行综合分析,结果表明:单株粒重和千粒重与产量之间呈显著正相关。各穗部性状对产量的直接贡献依次为:单株粒重、行粒数、穗长、千粒重、秃尖长、出子率、穗行数、穗粗。单株粒重对产量的直接效应最大。行粒数在直接对产量负向效应中表现最高,行粒数、千粒重、穗行数和穗粗都是通过单株粒重间接对产量产生影响。聚类分析结果表明,第3类单株粒重较高,其他穗部性状之间较协调,产量表现最高。综上所述,旱地条件下,选择高产玉米品种应该首先关注品种的单株生产能力,在此基础上兼顾行粒数、千粒重、穗行数和穗粗等性状。Comprehensive analysis of 8 ear characters and yield was conducted in 45 maize varieties with correla- tion analysis, path analysis and cluster analysis. The results indicated that the interrelation coefficients with grain weight per plant, 1000 - grain weight showed a higher positive value than the others. The direct path coefficients of 8 ear characters on yield ranked as follows：grain weight per plant, kernels per row, ear length, 1000 -grain weight, barren length, seed ratio, ear width. The results of cluster analysis to 8 ear characters was that the group 3 had the highest grain weight per plant with coordinate relationship between all ear characters and excellent performance of yield. Therefore,in dryland area,it was the effective way to obtain high yield with increasing grain weight per plant and Key taking into account kernels per row, 1000 - grain weight, ear row number and ear width.

关 键 词：旱地 玉米 穗部性状 产量 综合分析 

分 类 号：S513[农业科学—作物学]