Natural hybridization and reproductive isolation between two Primula species  

作　　者：Yanping Xie Xingfu Zhu Yongpeng Ma Jianli Zhao Li Li Qingjun Li 

机构地区：[1]Key Laboratory of Tropical Forest Ecology,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,mengla 666303,china [2]Graduate University of Chinese Academy of Sciences,Beijing 10049,China [3]Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China [4]Laboratory of Ecology and Evolutionary Biology,State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan,Yunnan University,Kunming 650091,China

出　　处：《Journal of Integrative Plant Biology》2017年第8期526-530,共5页植物学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(31500194 and U1202261)

摘　　要：Natural hybridization frequently occurs in plants and can facilitate gene flow between species, possibly resulting in species refusion. However, various reproductive barriers block the formation of hybrids and maintain species integrity. Here, we conducted a field survey to examine natural hybridization and reproductive isolation （RI） between sympatric populations of Primula secundiflora and P. poissonii using ten nuclear simple sequence repeat （SSR） loci. Although introgressive hybridization occurred, species boundaries between P. secundiflora and P. poissonii were maintained through nearly complete reproductive isolation. These interfertite species provide an excellent model for studying the RI mechanisms and evolutionary forces that maintain species boundaries.Natural hybridization frequently occurs in plants and can facilitate gene flow between species, possibly resulting in species refusion. However, various reproductive barriers block the formation of hybrids and maintain species integrity. Here, we conducted a field survey to examine natural hybridization and reproductive isolation （RI） between sympatric populations of Primula secundiflora and P. poissonii using ten nuclear simple sequence repeat （SSR） loci. Although introgressive hybridization occurred, species boundaries between P. secundiflora and P. poissonii were maintained through nearly complete reproductive isolation. These interfertite species provide an excellent model for studying the RI mechanisms and evolutionary forces that maintain species boundaries.

关 键 词：of IS on for in RI Natural hybridization and reproductive isolation between two Primula species were 

分 类 号：Q945[生物学—植物学]