文献类型：期刊文献

英文题名：Ecological succession of a natural community of Castanopsis sclerophylla on Laoshan Island, China

作者：Yue, Huafeng[1,2] Shao, Wenhao[3] Jiang, Jingmin[3] Li, Xiangkuan[1,2] Sun, Simei[4]

第一作者：Yue, Huafeng

通信作者：Jiang, JM[1]

机构：[1]Chinese Acad Forestry, Nontimber Forestry Res & Dev Ctr, 3 Weiwu Rd, Zhengzhou 450003, Peoples R China;[2]China Paulownia Res & Dev Ctr, 3 Weiwu Rd, Zhengzhou 450003, Peoples R China;[3]Chinese Acad Forestry, Res Inst Subtrop Forestry, 73 Daqiao Rd, Fuyang City 31140, Peoples R China;[4]Dazu Cty Forestry Bur, 58 West Nanhuan Rd, Chongqing 402360, Peoples R China

年份：2016

卷号：27

期号：5

起止页码：1171-1176

外文期刊名：JOURNAL OF FORESTRY RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000386357500022)】；

基金：This study was funded by the Key Project of Science and Technology Department of Zhejiang Province (2006C12059-3) and National Natural Science and Technology Resources Platform Project of China (2006DKA21003-09).

语种：英文

外文关键词：Castanopsis scerophylla; Ecological succession; Genetic diversity; Natural communities; SSR molecular marker

摘要：Castanopsis sclerophylla was surveyed for its root turion capacity on Laoshan Island in Zhejiang Province and dispersion patterns of seedlings, genetic diversity and genetic variation coefficient was studied using a SSR (simple sequence repeat) molecular marker technique to explore the genetic diversity of C. sclerophylla (Lindl.) Schott as a community and evaluate the community's development. The results showed that C. sclerophylla had strong root turion capacity, of which type Re2 was the most frequent, accounting for 32.4 and 82.4 % of the seedlings under the stock plant were from within-community mating; the 6 pairs of SSR primers chosen yielded high resolution with 97.6 % polymorphic sites; the within-community genetic diversity was over 88.9 % with stock plants (0.49) > seedling plants (0.45). Apparently, C. scerophyllan on Laoshan Island, propagating mainly by root turions, has developed high genetic diversity within a short period, keeping the community in a stage of stable growth and moving toward a climax community. The tillers, however, aggravate closing of the community so that it receives less pollen from outside. Within-community mating is thus reaching seriously high levels, which can lead to lower within-community genetic variation, a decline in DNA genetic diversity, and is bad for its development. Therefore, human interference should be taken to expand genetic exchange among communities.