为了从云南苦荞种质资源中挖掘优异种质资源,拓宽苦荞遗传基础,以48份苦荞种质资源为材料研究了 6个主要农艺性状和5个品质性状的遗传多样性分析。结果表明,云南的苦荞资源存在着丰富的遗传多样性,6个农艺性状中株粒重的变异系数为34.4%最大,品质性状中总黄酮含量的变异系数为66.7%最大。聚类结果表明,将48份材料聚为3大类,可区分为低产型、矮秆高产型和中秆高产型。6个主要农艺性状和5个品质性状的主成分分析结果表明,前3个累计贡献率分别达84.105%和80.332%,各主成分性状载荷值反映了主要数量性状的育种选择潜力。综合分析种质资源的主要农艺性状,为云南苦荞种质资源的利用提供有效的科学依据。
In order to explore the excellent germplasm resources from Yunnan tartary buckwheat germplasm resources, broaden the genetic basis of tartary buckwheat, six agronomic traits and five quality traits of 48 taytary buckwheat genotypes in Yunnan had been analyzed for genetic diversity. The results showed that the abundant genetic diversity existed among the tartary buckwheat in Yunnan, the variation coefficient of seed weight per plant in agronomic traits was 34.4% largest, and the variation coefficient of total flavonoids in quality traits was 66.7% largest. The results of the cluster analysis indicated that 48 accessions could be classified into 3 clusters including the low yield type, shorter plant height with high yield type and middle plant height with high yield type. The principal components analysis based on six agronomic traits and five quality traits, indicated the accumulation indices of respectively 84.105% and 80.332% from the top three principal components which reflecting the breeding potential of major quantitative traits. Comprehensive analysis of main traits provided scientific information for effective use of tartary buckwheat hermplasm resources in Yunnan genetie resources.
李春花,尹桂芳,王艳青,等.云南苦荞种质资源主要性状的遗传多样性分析[J].植物遗传资源学报,2016,17(6):993-1009.
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