Conservation genetics of Firmiana major, a threatened tree species with potential for afforestation of hot, arid climates
文献类型: 外文期刊
作者: Ma, Yuqian 1 ; Li, Congjia 1 ; Jin, Jie 3 ; Liao, Chengfei 3 ; Yang, Jing 1 ; Sun, Weibang 1 ;
作者机构: 1.Chinese Acad Sci, Kunming Inst Bot, Yunnan Key Lab Integrat Conservat Plant Species Ex, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
3.Yunnan Acad Agr Sci, Inst Trop Ecoagr, Yuanmou 651300, Yunnan, Peoples R China
4.Chinese Acad Sci, Kunming Inst Bot, Kunming Bot Garden, Kunming 650201, Yunnan, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
关键词: Firmiana major; Savanna vegetation; Population genetic; Demographic history; Conservation management; Plant Species of Extremely Small Populations
期刊名称:GLOBAL ECOLOGY AND CONSERVATION ( 影响因子:3.969; 五年影响因子:4.38 )
ISSN:
年卷期: 2022 年 36 卷
页码:
收录情况: SCI
摘要: Firmiana major (Malvaceae) is a dominant tree species in hot, arid valleys with savanna vegetation in southwest China. Due to severe human disturbance, the populations of F. major declined sharply and was once considered extinct in the wild. Until 2020, eight populations of F. major were found by our investigation and it was listed as a Plant Species of Extremely Small Populations (PSESP) in Yunnan Province, China, for urgent rescuing during the next decade. To guide its conservation, the genetic structure, demographic history, and distribution model were studied. Four genetic groups of F. major were revealed and their divergence times coincided with warming periods during the last glacial stage. The distribution model showed a narrow habitat for F. major around the hot, arid areas of Yuanmou Basin, Jingsha arid-hot valleys and their adjacent areas, which enhanced its endangered situation. Based on the study, several conservation suggestions for F. major were proposed including adopting its germplasms with better drought tolerance for afforestation in this area.
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