榆林市不同谷子品系农艺性状分析李振姣，王孟*，井苗，付治忠，强羽竹，王彩兰，李海录（榆林市农业科学研究院，陕西榆林719000）摘要：为了了解榆林市谷子分类特性及农艺性状的差异，对2018年榆林市多点区域试验的12个谷子品系的农艺性状进行了变异分析、相关分析、主成分分析、聚类分析，结果表明：产量的变异系数最大，为29.79%，出谷率的变异系数最小，为5.26%；产量与穗粗呈显著负相关，相关系数为-0.625，与千粒重呈显著正相关，相关系数为0.698；主成分分析提取了产量性状因子、穗型因子、株型性状因子、出谷率4个主成分因子，累计贡献率高达91.24%；聚类分析结果显示，12个品系划分为3大类，并分别指出了提高产量的途径。研究结果显示榆林市有代表性的谷子品系在同一地区的差异及分类关系，可为榆林市高产谷子的选育提供理论基础。关键词：谷子；农艺性状；产量；榆林市中图分类号：S515文献标识码：A文章编号：2096-5877（2023）01-0019-04AnalysisonAgronomicCharactersofDifferentMilletVarietiesinYulinLIZhenjiao,WANGMeng*,JINGMiao,FUZhizhong,JIANGYuzhu,WANGCailan,LIHailu(YulinAcademyofAgriculturalSciences,Yulin719000,China)Abstract：InordertounderstandthedifferencesintheclassificationcharacteristicsandagronomictraitsofmilletinYulin,variationanalysis,correlationanalysis,principalcomponentanalysisandclusteranalysiswerecarriedoutontheagronomictraitsof12milletlinesinthemulti-pointregionaltestinYulinin2018.Theresultsshowedthatthevariationcoefficientofyieldwasthemostwith29.79%,thevariationcoefficientofmilletgrainpercentagewasthelowestwith5.26%.Therewasasignificantnegativecorrelationbetweenyieldandeardiameter,andthecorrelationcoefficientwas-0.625,andasignificantpositivecorrelation1000-grainweight,thecorrelationcoefficientwas0.698.Theprincipalcomponentanalysisextractedfourprincipalcomponentfactors:yieldcharacterfactor,panicletypefactor,planttypecharacterfactorandgrainyieldrate,withacumulativecontributionrateof91.24%.Clusteranalysisresultsshowedthatthe12strainsweredividedinto3groupsbyclusteranalysis,anddifferentwaystoin⁃creaseyieldwerepointedout.Theresultsshowedthedifferenceandclassificationrelationshipoftherepresentativemilletlinesi...
