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Bulletin of Botanical Research ›› 2020, Vol. 40 ›› Issue (3): 330-338.doi: 10.7525/j.issn.1673-5102.2020.03.002

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An Assessment of Phylogenetic Diversity and Dissimilarity of Halophytes Across Different Provincial Region,China

ZHANG Zhong-Hua1,2, SONG Xiao-Qian1,2, TANG Zhong-Hua1,2, LIANG Zheng-Wei3   

  1. 1. College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040;
    2. Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040;
    3. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102
  • Received:2019-08-29 Online:2020-05-05 Published:2020-05-29
  • Supported by:
    National Basic Work Project of Science and Technology(2015FY110500)

Abstract: Phylogenetic diversity serves regional vegetation history, evolutionary law and the protection of biodiversity. Halophytes are the unique group of regional vegetation evolution and the important material basis for the development of future agricultural germplasm resources. The phylogenetic diversity of halophytes is great significance to reveal regional environmental changes, protection of germplasm resources and regional development,but so far, there is a lack of research in this area. Based on the theory and method of phylogenetic diversity and taking provincial administrative regions as units, we systematically evaluated the phylogenetic diversity and dissimilarity in China. A phylogenetic tree of 484 species, 17 varieties and 8 subspecies of Halophytes in 65 families has been constructed. Only Xinjiang, Ningxia, Gansu and Qinghai,Shaanxi, Inner Mongolia and Beijing have a net relatedness index (NRI) greater than 0. The correlation of phylogenetic diversity with family, genus and species richness was 67.01%, 91.20% and 96.99%, respectively. According to the taxonomic floristicsimilarity and phylogeneticsimilarity of halophytes, Chinese halophytes were divided into four regions. Our results have important guiding significance for provincial halophyte resource assessment, halophyte germplasm collection and halophyte regionalization in China.

Key words: halophytes, phylogenetic diversity, phylogenetic dissimilarity, phylogenetic structure

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