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Likely allopatric origins of Adiantum × meishanianum (Pteridaceae) through multiple hybridizations
Author(s) -
Shang Hui,
Wang Ying,
Zhu XiaoFeng,
Zhao GuoHua,
Wang FanHong,
Lu JinMei,
Yan YueHong
Publication year - 2016
Publication title -
journal of systematics and evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.249
H-Index - 46
eISSN - 1759-6831
pISSN - 1674-4918
DOI - 10.1111/jse.12205
Subject(s) - pteridaceae , biology , ploidy , dna barcoding , allopatric speciation , phylogenetic tree , nuclear dna , botany , chloroplast dna , evolutionary biology , genetics , mitochondrial dna , fern , gene , population , demography , sociology
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. × 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 cytometry. Our results indicated that A. × meishanianum in Yunnan is triploid and abortive, the same as A. × 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. × meishanianum probably originated from multiple hybridizations in Taiwan and Yunnan.