Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (18): 44-54.doi: 10.11924/j.issn.1000-6850.casb19030111

Special Issue: 资源与环境

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Amaranthus spp. Germplasm Resources in Yunnan: Phenotypic Diversity Analysis

Wang Yanqing1, Lu Wenjie1, Li Chunhua1, Yin Guifang1, Sun Daowang1, Hong Bo2, Wang Lihua1()   

  1. 1Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences/Yunnan Provincial Key Lab of Agricultural Biotechnology/Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Kunming 650225
    2Agricultural Technology Extension Station of Baoyun Street, Huize Yunnan 654200
  • Received:2019-03-26 Revised:2019-09-23 Online:2020-06-25 Published:2020-07-10
  • Contact: Wang Lihua E-mail:wanglihua70@hotmail.com

Abstract:

The paper aims to analyze the phenotypic genetic diversity of Amaranthus spp. gerplasm resources in Yunnan. We studied 30 phenotypic traits of 104 Amaranthus spp. germplasm resources in Yunnan by using the genetic diversity index, principal component analysis, correlation analysis and cluster analysis. The results showed that: the highest quality and quantitative traits of genetic diversity index were main inflorescence shape (1.68) and main inflorescence length (2.07), respectively; the cumulative contribution rate of the first 10 principal components reached 73.944%; the fresh weight per plant was positively correlated with the third, sixth and ninth principal component, and the grain weight per plant was positively correlated with the ninth principal component. According to cluster analysis, the 104 germplasms were divided into 5 groups; group Ⅰ could be used as interplanting parent material, group Ⅱ and Ⅲ could be used as large grain parent material, and group Ⅳ could be used as high quality forage parent material, group Ⅴ could be used as ornamental parent material. The phenotypic traits of Amaranthus spp. germplasm resources in Yunnan are rich in genetic diversity and have great potential for exploitation and utilization.

Key words: Amaranthus spp., germplasm resources, phenotypic traits, genetic diversity, Yunnan

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