作物杂志Issue(4)：76-84,9.DOI:10.16035/j.issn.1001-7283.2026.04.009
158份裸大麦种质资源主要性状的多样性分析与综合评价
Diversity Analysis and Comprehensive Evaluation of Main Traits in 158 Naked Barley Germplasm Resources
摘要
Abstract
To efficiently utilize naked barley germplasm resources,15 traits of 158 naked barley germplasm resources from different sources were analyzed using coefficients of variation,Shannon-Wiener genetic diversity indexes,correlation analysis,principal component analysis,and cluster analysis,and comprehensive evaluation was conducted to screen for excellent germplasm.The results showed that there was abundant variation in the 15 traits among different naked barley resources,with the coefficient of variation ranging from 7.84%to 69.65%and an average of 26.69%.Among them,the degree of dispersion of spike color was the highest,and the coefficient of variation of grain perimeter was the lowest.The diversity index ranged from 0.51 to 2.09,with an average of 1.62,among which grain width had the highest diversity index and awn type had the lowest.A regression equation was established through stepwise regression,indicating that 1000-grain weight,spike color,grain perimeter,β-glucan content,row type,grain area,and grain width can be used as comprehensive evaluation indicators for screening excellent naked barley germplasm.Principal component analysis transformed the 15 individual indicators into six independent comprehensive indicators with a cumulative contribution rate of 82.111%.Cluster analysis classified the tested materials into five groups,among which Group Ⅳ(21 materials)had the highest average D-value.The top five varieties based on D-value were Jet,Tet,22DJ2,Zangqing 3000,and 12-10-556,which can serve as excellent parents for naked barley breeding.关键词
裸大麦/种质资源/性状/多样性/综合评价Key words
Naked barley/Germplasm resource/Trait/Diversity/Comprehensive evaluation引用本文复制引用
李赢,刘海翠,石晓旭,梁志浩,徐肖,刘建,沈会权,魏亚凤..158份裸大麦种质资源主要性状的多样性分析与综合评价[J].作物杂志,2026,(4):76-84,9.基金项目
江苏省农业科技自主创新资金项目[CX(24)3089] （24）
南通市科技项目(MS2024049) （MS2024049）
国家大麦青稞产业技术体系(CARS-05) （CARS-05）
江苏沿江农科所学科基金项目[YJXK(2023)202] （2023）
