465份燕麦种质资源表型遗传多样性分析及优异资源筛选

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中图分类号：S544.9 文献标识码：A 文章编号：1007-0435（2026）03-0840-13

doi：10.11733/j.issn.1007-0435.2026.03.010

引用格式：，等.465份燕麦种质资源表型遗传多样性分析及优异资源筛选[J].草地学报，2026，34（3）：840 —852 WEI Ji，GAO Yang-miao，WANG Hui，et al.Phenotype Genetic Diversity Analysis and Screening for Elite Germ plasmResources in 465 Oat Accessions[J]. Acta Agrestia Sinica，2026，34（3） ：840—852

Abstract：To analyze the genetic diversity characteristics of the phenotypic traits and identify germplasm with superior traits in oats （Auena satiua L.），this study conducted a comprehensive evaluation of 24 phenotypic traits in 465 oat accessions collected from 26 countries.The results showed that the coeficient of variation for 13 quantitative traits ranged from 13.19% to 46.70% ，while the genetic diversity index for 11 qualitative traits varied between O.12 and1.Oo. Correlation analysis revealed significant positive correlations（ P<0.01 ） between plant growth traits （e.g.，plant height，stem diameter）and yield-related or panicle traits，whereas a significant negative correlation （ .P<0.05 ）was observed between lodging resistance and thousand-kernel weight.Cluster analysis classified the accessions into six distinct groups：Group I，high-biomass hulld oats suitable for forage breeding；Group II，accessions combining high yield and lodging resistance；Group III， naked oats ideal for grain use;Groups IV-VI，accessions with distinctive characteristics，which can serve as a specialized gene bank. Based on principal component analysis （cumulative contribution rate of 65.05% ）and comprehensive evaluation scores （ F value），five elite accessions（174，Y586，Y1062，Y341，150）with high yield and lodging resistance were identified，demonstrating potential as excelent parental lines or fundamental research materials.

Key words： Oat（Auena satiua L.）; Phenotypic traits; Genetic diversity; Principal component analysis;Cluster analysis

燕麦（AvenasatiuaL.）是禾本科（Poaceae）燕麦属（AvenaL.）一年生植物1，具有抗旱、耐寒、耐盐碱、耐贫瘠的特性及丰富的营养价值，在全球广泛种植。（剩余20881字）