Likely allopatric origins of Adiantum × meishanianum （Pteridaceae） through multiple hybridizations  

作　　者：Hui Shang Ying Wang Xiao-Feng Zhu Guo-Hua Zhao Fan-Hong Wang Jin-Mei Lu Yue-Hong Yan 

机构地区：[1]National Conservation Center for Endangered Useful Plants in East China Shanghai Chenshan Botanical Garden [2]Shanghai Chenshan PlantScience Research Center, Chinese Academy of Sciences, Shanghai 201602, China [3]College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China [4]State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China [5]Harbin Normal University, Key Laboratory of Plant Biology, College of Heilongjiang Province, Harbin 150025, China [6]Key Laboratory for Plant Biodiversity and Biogeography of East Asia, Kunming institute of Botany, Chinese Academy of Sciences,Kunming 650201, China

出　　处：《Journal of Systematics and Evolution》2016年第5期528-534,共7页植物分类学报（英文版）

基　　金：The authors are grateful to Ai-Hua Wang, Bin Chen, Hong-Jin Wei and Yu-Feng Gu for their helpful assistance in our study.This study was financially supported by the National Natural Science Foundation of China （Grant No. 31370234） and the Shanghai Municipal Administration of Forestation and City Appearances （Grant Nos. G152419 and G162400.

摘　　要：Adiantum × meishanianum F. S. Hsu ex Y. C. Liu ＆ W. L. Chiou was regarded as an endemic species in Meishan Village, Kaohsiung, Taiwan, China and a hybrid between A. malesianum Ghatak （the maternal parent） and a sexually reproducing diploid cryptic species of A. philippense L. （the paternal parent）, as revealed by chloroplast and nuclear markers. However, morphological research revealed that A. x meishanianum is also disjunctively distributed in Yunnan and that its paternal parent is possibly A. menglianense Y. Y. Qian. Thus, this study aimed to confirm these findings by using two chloroplast regions and a low-copy nuclear marker in DNA barcoding and phylogenetic analyses, spore measurement, and flow c%cometry. Our results indicated that A. x meishanianum in Yunnan is triploid and abortive, the same as A. x meishanianum in Taiwan, and they both originated from the hybridization between the maternal parent of A. malesianum and the paternal parent of A. menglianense, but not A. philippense. In conclusion, A. x meishanianum probably originated from multiple hybridizations in Taiwan and Yunnan.Adiantum × meishanianum F. S. Hsu ex Y. C. Liu ＆ W. L. Chiou was regarded as an endemic species in Meishan Village, Kaohsiung, Taiwan, China and a hybrid between A. malesianum Ghatak （the maternal parent） and a sexually reproducing diploid cryptic species of A. philippense L. （the paternal parent）, as revealed by chloroplast and nuclear markers. However, morphological research revealed that A. x meishanianum is also disjunctively distributed in Yunnan and that its paternal parent is possibly A. menglianense Y. Y. Qian. Thus, this study aimed to confirm these findings by using two chloroplast regions and a low-copy nuclear marker in DNA barcoding and phylogenetic analyses, spore measurement, and flow c%cometry. Our results indicated that A. x meishanianum in Yunnan is triploid and abortive, the same as A. x meishanianum in Taiwan, and they both originated from the hybridization between the maternal parent of A. malesianum and the paternal parent of A. menglianense, but not A. philippense. In conclusion, A. x meishanianum probably originated from multiple hybridizations in Taiwan and Yunnan.

关 键 词：Adiantum × meishanianum A. menglianense cryptic species disjunctive distribution multiple hybrids. 

分 类 号：Q0[生物学]