摘要
以“第三次全国农作物种质资源普查与收集行动”为依托,采用遗传多样性分析、相关性分析、聚类分析、主成分分析等方法,对2020-2021年在河北省内普查收集的136份高粱种质资源进行研究及综合评价。结果表明:河北省高粱地方种质资源具有丰富的表型变异,15个表型性状的多样性指数在0.0844~1.9926之间,变异系数在4.69%~68.00%之间,千粒重的遗传多样性最高,穗形的变异系数最大;株高与穗部性状之间存在极显著正相关关系;聚类分析将136份高粱种质资源分为3个类群,3个类群无明显地域聚类特点。第Ⅰ类群在穗部性状方面表现最好,可进行工艺用高粱资源选育;第Ⅱ类群株高较低,可筛选矮秆高粱资源进行种质创新;第Ⅲ类群在产量性状方面表现最好,可作为粒用高粱育种材料加以利用。主成分分析将表型性状简化为5个主成分,累计贡献率为60.182%,株高、穗部与籽粒性状是高粱表型变异的主要因素;136份高粱的综合得分范围在0.107~1.147之间,以综合得分排序,筛选出肃宁高粱、长穗高粱、笤帚高粱、落黍等排名前10的综合性状表现较好的种质资源。本研究从多方面、多角度对新征集的河北省高粱种质资源进行了分析及评价,以期为高粱优异种质资源的挖掘及种质创新利用提供参考依据。
Based on"The Third National Campaign of Crop Germplasm Census and Collection",genetic diversity analysis,correlation analysis,cluster analysis and principal component analysis were used to study and evaluate 136 sorghum germplasm resources collected from 2020 to 2021 in Hebei province.The results showed that there were abundant phenotypic variations in the collection.The diversity index of 15 phenotypic traits ranged from 0.0844 to 1.9926,and the coefficient of variation ranged from 4.69%to 68.00%.The genetic diversity of 1000-grain weight and the coefficient of variation of panicle shape were the highest.A significant positive correlation between plant height and panicle traits was detected.These germplasms were divided into three groups by cluster analysis,while three clusters didn’tcorrelate with the geographic collection sites.Cluster I showed the best performance in panicle traits and could be used in breeding for technical purposes.The plant height of cluster II was low,which can be used as dwarf resources in germplasm innovation.Cluster III showed the best yield traits which can be used in breeding for higher grain production.Principal component analysis simplified phenotypic trait factors into 5 principal components,with the cumulative contribution rate of 60.182%.The plant height,the panicle and grain traits were the main factors contributing to the phenotypic differences.Based on the comprehensive scores of 136 sorghum germplasms that ranged from 0.107 to 1.147,the top 10 elite germplasm resources such as Suning sorghum,Changsui sorghum,Tiaozhou sorghum and Luoshu were selected.Collectively,based on the evaluation of these newly collected sorghum germplasm resources in Hebei province,this study provided insights for the mining of elite sorghum germplasm and the innovative utilization of germplasm.
作者
牛雪婧
王新栋
王金萍
孙娟
郄彦敏
王丽娜
耿立格
NIU Xuejing;WANG Xindong;WANG Jinping;SUN Juan;QIE Yanmin;WANG Lina;GENG Lige(Institute of Cereal and Oil Crops,Hebei Academy of Agricultural and Forestry Sciences/Hebei Key Laboratory of Crop Genetics and Breeding,Shijiazhuang 050035;Institute of Millet Crops,Hebei Academy of Agricultural and Forestry Sciences,Shijiazhuang 050035)
出处
《植物遗传资源学报》
CAS
CSCD
北大核心
2024年第4期562-575,共14页
Journal of Plant Genetic Resources
基金
第三次全国农作物种质资源普查与收集行动
河北省农林科学院科技创新专项(2022KJCXZX-LYS-15)
国家科技资源共享服务平台项目(NCGRC-2023-023)。
关键词
高粱
种质资源
遗传多样性分析
综合评价
普查收集
sorghum
germplasm resources
genetic diversity
comprehensive evaluation
survey and collection
