›› 2019, Vol. 31 ›› Issue (10): 1689-1699.DOI: 10.3969/j.issn.1004-1524.2019.10.15

• Environmental Science • Previous Articles     Next Articles

Diversity of ancient tea germplasm based on morphological characteristics in Guizhou

NIU Suzhen1,2,3, SONG Qinfei3, AN Hongwei3, HUANG Zheng3, LIU Xia3, ZHAO Degang1,2,*, CHEN Zhengwu1   

  1. 1. Institute of Tea, Guizhou Academy of Agricultural Sciences/Guizhou Tea Institute, Guiyang 550006, China;
    2. The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering, Guizhou University, Guiyang 550025, China;
    3. College of Tea Science, Guizhou University, Guiyang 550025, China
  • Received:2019-03-30 Online:2019-10-25 Published:2019-10-30

Abstract: In this study, 144 ancient tea germplasm distributed in 32 zones were evaluated to analyze the variation of morphological characters and the diversity, and to provide theoretical basis for the utilization of ancient tea germplasm by morphological way in Guizhou. The results showed that the variation coefficients of 9 morphological traits were above 35% except tree posture, and the diversity index of 10 morphological traits was above 0.85; the cumulative contribution rate of the first four principal component factors was only 85.97%. Among the five ecological zones, the morphological and genetic diversity of ancient tea germplasm resources in southwestern Guizhou was wider than that in other zones. Three groups were divided at the distance of 5.60. The first group included 27 samples, which mainly came from southeastern Guizhou, central Guizhou, southwestern Guizhou and northern Guizhou. The second group included 10 samples, which mainly came from Qinglong in southwestern Guizhou. The third group included 107 samples, which were widely distributed.

Key words: ancient tea germplasm, Guizhou, morphological characteristics, diversity

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