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《Northern Horticulture》 2017-24
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Genetic Diversity and Genetic Structure of Three RhododendronSpecies Located on Dabie Mountains

WANG Shuzhen;AI Sha;ZHANG Lin;LI Zhiliang;XIANG Fu;JIN Weibin;Hubei Collaborative Innovation Center for the Characteristic Resources Exploitation of Dabie Mountains,Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization,College of Life Science,Huanggang Normal University;  
Dabie Mountains provides unique habitat for Rhododendron resources,and is an important diversity distribution center of Rhododendron genus in China.In this study,three Rhododendron species,including Rhododendron molle(Blume) G.Don,Rhododendron fortunei Lindl.,and Rhododendron mariesii Hemsl.et Wils.,were selected for genetic diversity and genetic structure analysis with 9 microsatellite markers.The results showed that 45 alleles were obtained,and observed number of alleles per locus ranged from 3 to 7.Shannon index ranged from 0.87 to 0.91.Moreover,HO and HE were in the ranges of 0.523-0.651 and 0.517-0.536,respectively.The mean value of Fit and Fis were 0.075 9 and-0.173 3,respectively,indicating inbreeding took place in all three populations.The average gene flow at each locus was 0.927 0.In the cluster analysis,R.molle was clustered with R.fortunei,inferring closer relations between these two species.This study would lay the foundation for the evolutionary study of Rhododendronspecies.
【Fund】: 国家自然科学基金资助项目(NSFC31500995);; 大别山特色资源开发湖北省协同创新中心团队资助项目(2015TD07);; 经济林种质改良与资源综合利用湖北省重点实验室开放基金资助项目(2017BX06)
【CateGory Index】: S685.21
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