中国农业科技导报2026，Vol.28Issue(6)：40-53,14.DOI:10.13304/j.nykjdb.2024.1070
70份苦荞种质表型性状的遗传多样性分析及综合评价
Genetic Diversity Analysis and Comprehensive Evaluation on Phenotypictraits of 70 Fagopyrum tartaricun Germplasm Resources
摘要
Abstract
In order to analyze the phenotypic genetic diversity of Fagopyrum tartaricun germplasm resources and conduct a comprehensive evaluation,14 phenotypic traits of 70 F.tartaricun germplasm resources were determined and evaluated by using genetic diversity index,Nei's diversity index,coefficient of variation,correlation analysis,principal component analysis and cluster analysis.The results showed that the genetic diversity index of 2 grain traits was 0.69～0.73,the Nei's diversity index was 1.01～1.95,while the diversity index of 12 quantitative traits was 2.89～4.25,the Nei's diversity index was 2.15-4.24,and the coefficient of variation was 7.36%～40.58%,which was rich in genetic diversity.Correlation analysis showed that the yield of Tartary buckwheat was extremely significantly positively correlated with plant height,nodes number of main stem,grains number per plant and grains weight per plant,and was significantly positively correlated with stem diameter and seeds number of main inflorescence.Principal component analysis showed that 12 phenotypic traits were transformed into 5 comprehensive indicators,and the cumulative contribution rate reached 76.52%.According to the characteristic vectors of principal components,they were named grain type factor,grain quality factor,plant type factor and yield factor.Cluster analysis divided 70 Tartary buckwheat germplasms into 5 groups.Group Ⅰ showed long-grained F.tartaricun resources with moderate plant height and grains number and grains weight per plant;group Ⅱ showed short plant height and small grains number and grains weight per plant;group Ⅲ showed thick stems and high grains number and grains weight per plant;group Ⅳ showed moderate plant height and high grain weight per plant;and group Ⅴ showed high plant height and yield.According to the comprehensive evaluation results,the breeding parent materials K-26,K-73 and K-6 with dwarf plants,thick stems,large grains and high seed setting rate were screened out,which could be directly used in production.Above research results provided theoretical basis for the innovation of F.tartaricun germplasm resources and the breeding of new varieties.关键词
苦荞/表型性状/遗传多样性/综合评价Key words
Fagopyrum tartaricun/phenotypictraits/genetic diversity/comprehensive evaluation分类
农业科技引用本文复制引用
黄春燕,翟冰欣,谭静,刘鑫,卢文洁,孙道旺,王莉花..70份苦荞种质表型性状的遗传多样性分析及综合评价[J].中国农业科技导报,2026,28(6):40-53,14.基金项目
国家燕麦荞麦产业技术体系建设项目(CARS-07-C-2) （CARS-07-C-2）
云南省重大科技专项(202202AE090020). （202202AE090020）
