基于表型性状的马铃薯种质资源遗传多样性分析

doi:10.12190/j.issn.2096-1197.2021.05.02

Abstract

Abstract: 【Objective】 To make full use of potato germplasm resources and provide theoretical basis for potato variety creation,the genetic diversity of 30 collections was evaluated. 【Methods】 The genetic diversity evaluation of 30 potato germplasm resources were analyzed and evaluated by the difference,genetic diversity index,principal component analysis,correlation analysis and cluster analysis. 【Results】 The diversity index of quality traits of potato varieties（lines）ranged from 0.673 to 1.424. The diversity index of leaf color,flesh color and tuber shape was higher. The diversity index of quantitative traits ranged from 1.705 to 1.997,with the commercial potato rate being the highest and the number of main stems being the lowest. Principal component analysis showed that the cumulative contribution rate of the first four principal components was 75.989%,which could cover information for most characters. Correlation analysis showed that plant height was positive（P<0.05）correlated with the rate of commercial potato and yield. 30 potato germplasm resources were divided into 3 groups using cluster analysis. Group Ⅰ contained 8 materials,group Ⅱ contained 9 materials,and group Ⅲ contained 13 materials. 【Conclusion】 The 30 potato germplasm resources were classified into 3 major groups,with rich variation and wide genetic diversity.

Key words: Potato, Germplasm resources, Cluster analysis, Genetic diversity

CLC Number:

S532

HAN Zhigang, XIE Rui, JIN Xiaolei, GUO Binyu, GUO Jingshan. Genetic diversity analysis of potato germplasm resources based on phenotypic traits[J].Journal of Northern Agriculture, 2021, 49(5): 9-17.

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URL: https://journal30.magtechjournal.com/bfnyxb/EN/10.12190/j.issn.2096-1197.2021.05.02

https://journal30.magtechjournal.com/bfnyxb/EN/Y2021/V49/I5/9

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Genetic diversity analysis of potato germplasm resources based on phenotypic traits

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