Journal of Guangxi Normal University(Natural Science Edition) ›› 2013, Vol. 31 ›› Issue (4): 140-144.

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Fine-scale Spatial Genetic Structure Analysis of Abies ziyuanesis Population in Dayuan,Hunan,China

LIU Zhao-hui1,2, LU Yong-bin1,2, ZHANG Qi-wei1,2, LIU Yan-hua3, TANG Shao-Qing1,2   

  1. 1.College of Life Science,Guangxi Normal University,Guilin Guangxi 541004,China;
    2.Ministry of Education Key Laboratory for Ecology of Rare and Endangered Species and Environmental Protection,Guilin Guangxi 541004, China;
    3.The High School Affiliated to Guangxi Normal University,Guilin Guangxi 541001,China
  • Received:2013-06-14 Online:2013-12-20 Published:2018-11-26

Abstract: Abies ziyuanesis is a critically endangered plant species endemic to China,and its population in Dayuan of Yanling County,Hunan Province,has the largest size.In this research,the fine-scale spatial genetic structure (SGS) of four A.ziyuanesis populations in Dayuan was analyzed by simple sequence repeats (SSR) markers.Sp statistics indicated that the SGS intensity of four populations were as follows:JMJ(0.018 6)>XGP(0.018 4)>HPA(0.011 8)>ZNS(0.007 1).Pair-wise relatedness coefficients between individuals in each population (Fij) indicated that ZNS population showed random distribution and others had a significantly SGS.Indirect estimation for gene flow diffusion distance in three populations which had a significantly SGS were as follows:XGP (16 to 37 m),JMJ (21 to 47 m) and HPA (28 to 63 m).The presence of a SGS in three populations implied that A.ziyuanesis germplasm resources for ex situ conservation should be collected from trees at least 12 m,10 m,25 m (for XGP,JMJ and HPA population,respectively) apart to reduce genetic similarity between neighbouring individuals.

Key words: Abies ziyuanesis, SSR, fine-scale spatial genetic structure, gene flow dispersal, conservation

CLC Number: 

  • Q948.15
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