六棱大麦品种(系)主要农艺性状分析  

Analysis of Main Agronomic Traits of Six-row Barley Varieties(Lines)

作　　者：郜战宁 王树杰 冯辉 薛正刚 杨永乾 GAO Zhanning;WANG Shujie;FENG Hui;XUE Zhenggang;YANG Yongqian(Zhumadian Academy of Agricultural Sciences,Zhumadian,Henan 463000,China)

机构地区：[1]驻马店市农业科学院,河南驻马店463000

出　　处：《陕西农业科学》2022年第5期1-6,共6页Shaanxi Journal of Agricultural Sciences

基　　金：国家大麦青稞产业技术体系驻马店综合试验站(CRAS-05);河南省甘薯杂粮产业技术体系驻马店综合试验站(Z2020-14-02)。

摘　　要：为筛选创制优异种质,对27份六棱大麦品种(系)的株高、穗长、千粒重、穗粒数、有效穗、产量、不孕粒等主要农艺性状进行分析。结果表明,六棱大麦品种(系)不孕粒(变异系数52.04%)、籽粒产量(变异系数22.44%)、穗长(变异系数21.51%)及有效穗(变异系数14.76%)的变异范围较大,而株高(变异系数8.15%)、千粒重(变异系数{8.98%})和穗粒数(变异系数12.74%)变异范围相对较小,六棱大麦品种选育的增产结果主要表现在有效穗数的适当提高;相关分析可知,六棱大麦品种(系)主要农艺性状之间的相关性比较复杂,有效穗与产量呈极显著正相关;主成分分析把27份供试材料的主要性状进行降维因子分析,使其累计贡献率达85.5807%;六棱大麦品种(系)在遗传距离10水平上可聚为三大类:矮秆多穗型,高秆大穗型,中秆中穗型。In order to select and create excellent six-row barley germplasm,the main agronomic traits of 27 six-row barley varieties(lines),such as plant height,panicle length,1000-grain weight,grains number per panicle,effective panicle and yield and infertility,were analyzed and comprehensively evaluated.The results showed that the variation of these traits,infertile grains(CV52.04%),yield(CV22.44%),panicle length(CV21.51%)and effective panicle(CV14.76%)of the six-row barley varieties were relatively rich,while the variation of plant height(CV8.15%),thousand seeds weight(CV8.98%)and number of grains per panicle(CV12.74%)were relatively small.And the yield-increasing effect of six-row barley breeding was showed with increase of effective panicle number.The correlation analysis indicated that there were complex correlations among the characters of six-row barley,and the yield was affected by several characters,there was a significant positive correlation between effective panicle and yield.Through principal component analysis,the main agronomic traits of 38 two-row barley were divided into four principal components,and their cumulative contribution rate was 87.3413%.At the level of genetic distance of 12.5,the six-row barley varieties could be divided into three types:short stalk and multi-spike type,high stalk and large-spike type,medium stalk and medium-stalk type.

关 键 词：六棱大麦 农艺性状 遗传多样性 分析 

分 类 号：S512.3[农业科学—作物学]