Genetic diversity of “Small & Medium Leaf” tea resources in Sichuan Province based on phenotypic characteristics

doi:10.3969/j.issn.1004-1524.2019.09.02

›› 2019, Vol. 31 ›› Issue (9): 1405-1415.DOI: 10.3969/j.issn.1004-1524.2019.09.02

• Crop Science • Previous Articles Next Articles

Genetic diversity of “Small & Medium Leaf” tea resources in Sichuan Province based on phenotypic characteristics

XIE Wengang, LI Xiaosong, LI Wei, TANG Qian^*

College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China

Received:2019-04-01 Online:2019-09-25 Published:2019-10-11

Abstract

Abstract: In order to protect and identify tea resources, and excavate special resources in Sichuan Province, principal component analysis (PCA) and cluster analysis were carried out on 30 phenotypic traits of 109 “ Small & Medium Leaf” tea resources in Sichuan. The results showed that the variation coefficient and diversity index of “Small & Medium Leaf” tea resources in Sichuan Province were 32.27% and 0.98, respectively. There were obvious differences in phenotypic traits of tea resources and rich diversity. Principal component analysis (PCA) and cluster analysis showed that the cumulative contribution rate of 12 principal component factors was 71.14%. The materials which were tested were clustered into 8 groups, and had little correlation with their provenance. The “Small & Medium Leaf” tea resources in Sichuan Province had rich phenotypic-traits genetic diversity, and phenotypic traits of different-provenance teas were different, which provided references for structure of core germplasm bank of Sichuan tea plants and selection of tea varieties.

Key words: tea, germplasm resource, phenotypic traits, diversity

CLC Number:

S571.1

XIE Wengang, LI Xiaosong, LI Wei, TANG Qian. Genetic diversity of “Small & Medium Leaf” tea resources in Sichuan Province based on phenotypic characteristics[J]. , 2019, 31(9): 1405-1415.

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Genetic diversity of “Small & Medium Leaf” tea resources in Sichuan Province based on phenotypic characteristics

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