摘要
以91份燕麦种质资源为试验材料,通过考察其株高、茎粗、主穗长、穗铃数、单株穗数、不孕小穗数、单株分蘖数及籽粒产量等指标,进行遗传多样性分析、相关性分析、主成分分析及聚类分析。结果表明,91份裸燕麦种质资源的8个农艺性状均具有丰富的遗传多样性,茎粗的遗传多样性指数最高(2.06),不孕小穗数的变异系数最高(107.54%)。相关性分析表明,穗铃数是影响籽粒产量的重要因子。利用主成分分析共筛选出3个主成分,累积贡献率达79.094%,包含了株高、茎粗、主穗长、穗铃数、单株穗数、单株分蘖数和籽粒产量等7个性状。通过聚类分析将91份燕麦材料分为六大类群,第Ⅱ类群可作为高产种质创新利用材料来源,第Ⅴ类群可作为强分蘖力种质创新利用材料来源,第Ⅵ类群可作为高秆、大穗型种质创新利用材料来源。根据91份燕麦种质资源农艺性状数据及相关分析,初步筛选出高产、分蘖能力强、高秆大穗的特异种质共15份,可在实际应用中依据不同的育种目标选择亲本材料。
Taking 91 Avena sativa germplasm resources as experimental materials,genetic diversity analysis,correlation analysis,principal component analysis and cluster analysis were conducted by examining indicators such as plant height,stem diameter,main panicle length,number of panicles,number of panicles per plant,number of infertile panicles,number of tillers per plant and grain yield.The results showed that the eight agronomic traits of 91 naked Avena sativa germplasm resources all had rich genetic diversity.The genetic diversity index of stem thickness was the highest(2.06),and the coefficient of variation of the number of infertile spikles was the highest(107.54%).Correlation analysis indicates that the number of spikes was an important factor affecting grain yield.A total of 3 principal components were screened out by principal component analysis,with a cumulative contribution rate of 79.094%,including 7 traits such as plant height,stem diameter,main panicle length,number of panicles,number of panicles per plant,number of tillers per plant and grain yield.Through cluster analysis,91 Avena sativa materials were classified into six major groups.The GroupⅡcould be used as the source of materials for high-yield germplasm innovation and utilization,the GroupⅤcould be used as the source of materials for germplasm innovation and utilization with strong tillering ability,and the GroupⅥcould be used as the source of materials for germplasm innovation and utilization of tall and large spike types.Based on 91 agronomic trait data of Avena sativa germplasm resources and related analyses,a total of 15 special germplasms with high yield,strong tillering ability,tall stem and large spike were initially screened out.These could be used to select parent materials in practical applications according to different breeding goals.
作者
张子臻
郑成忠
何竹青
梅雪
王千军
李赛如
孙影
杨舟
耿英杰
王凤梧
ZHANG Zizhen;ZHENG Chengzhong;HE Zhuqing;MEI Xue;WANG Qianjun;LI Sairu;SUN Ying;YANG Zhou;GENG Yingjie;WANG Fengwu(Ulanqab Institute of Agricultural and Forestry Sciences,Ulanqab Inner Mongolia 012000,China)
出处
《种子》
北大核心
2025年第7期106-112,共7页
Seed
基金
加工专用型燕麦原粮标准化生产与精深加工技术研究项目(2020GG0211)
国家燕麦荞麦产业技术体系乌兰察布综合试验站(CARS-07-G-4)
内蒙古自治区英才兴蒙燕麦种质资源创新与利用团队项目
乌兰察布市燕麦院士专家工作站项目
燕麦新品种筛选及综合配套技术研究项目(内蒙古自治区科学技术合作与交流中心支持)。
关键词
燕麦
种质资源
遗传多样性
Avena sativa
germplasm resources
genetic diversity
