Species delimitation in the phegopteris decursivepinnata polyploid species complex (Thelypteridaceae)

Tao Fujiwara, Junki Ogiso, Sousuke Ishii, Kei Togo, Narumi Nakato, Shunsuke Serizawa, Yi Shan Chao, Hyoung Tak Im, Atsushi Ebihara, Yasuyuki Watano*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

6 引文 斯高帕斯(Scopus)

摘要

Phegopteris decursivepinnata harbors diploid and tetraploid strains, forming a polyploid species complex together with P. koreana. Hybridization and polyploidization in the complex blur species boundar-ies, making it challenging to apply the proper taxonomic treatment. Ploidy determinations, phylogenetic analyses, and morphological investigations to elucidate the origins of the polyploid species and improve species classification for the P. decursivepinnata species complex are reported. Ploidy determinations and phylogenetic analyses revealed that diploid members of the complex were separated into two groups, a diploid P. decursivepinnata and a group consisting of Thelypteris itoana and a diploid P. koreana. The tetraploid P. decursivepinnata was shown to be an allotetraploid derived from hybridization between the two diploid groups. The samples of P. koreana revealed to be diploid suggested intraspecific cytotypic variation in P. koreana. The diploid P. koreana was genetically and morphologically indistinguishable from the diploid T. itoana. The diploid members of the complex previously treated as P. decursivepin-nata are described as a new species, P. taiwaniana; and T. itoana is placed in synonymy under P. koreana.

原文英語
頁(從 - 到)205-226
頁數22
期刊Acta Phytotaxonomica et Geobotanica
72
發行號3
DOIs
出版狀態已發佈 - 2021
對外發佈

ASJC Scopus subject areas

  • 生態學、進化論、行為學與系統學
  • 生態學
  • 植物科學

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