Genetic Diversity and Relationship of Tea Germplasm Resources Camellia sinensis var. assamica cv. Jianghua Revealed by ISSR Markers

LI Dan; LI Duan-sheng; YANG Chun; WANG Qing; LUO Jun-wu

doi:10.13305/j.cnki.jts.2012.02.013

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Journal of Tea Science ›› 2012, Vol. 32 ›› Issue (2) : 135-141. DOI: 10.13305/j.cnki.jts.2012.02.013

Genetic Diversity and Relationship of Tea Germplasm Resources Camellia sinensis var. assamica cv. Jianghua Revealed by ISSR Markers

LI Dan¹, LI Duan-sheng², YANG Chun¹, WANG Qing¹, LUO Jun-wu^1*

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Abstract

The 10 pairs of ISSR primers were used to analyze the genetic polymorphism and genetic relationship of 70 Camellia sinensis var. assamica cv. Jianghua individuals. Totally 174 bands were generated with 10 ISSR primers, of which 166 (95.40％) were polymorphic, which indicated that the genetic diversity of Jianghua population was relatively high. The mean Nei´s gene diversity (H) and Shannon´s information index (I) of the tested tea germplasm were 0.382 and 0.558 respectively, indicating a rather high genetic diversity existed between the germplasm resources. The genetic similarity coefficient ranged from 0.44 to 0.84, averaging 0.63. UPGMA cluster analysis showed that all the tested individuals could be classified into 6 groups including 5 complex groups and 1 simple group. The genetic relationship of all 70 Jianghua individuals was revealed by the ISSR dendrogram, which provide the basis for the utilization and protection of this local landrace population.

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Camellia sinensis var. assamica cv. Jianghua / genetic polymorphism / genetic relationship / ISSR

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LI Dan, LI Duan-sheng, YANG Chun, WANG Qing, LUO Jun-wu. Genetic Diversity and Relationship of Tea Germplasm Resources Camellia sinensis var. assamica cv. Jianghua Revealed by ISSR Markers[J]. Journal of Tea Science. 2012, 32(2): 135-141 https://doi.org/10.13305/j.cnki.jts.2012.02.013

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