A New Record of Potamogeton xangustifolius J. Presl (Potamogetonaceae) in Japan

Shutoh, Kohtaroh; Usuba, Mitsuru; Yamagishi, Hiroki; Fujita, Yushi; Shiga, Takashi

A New Record of Potamogeton xangustifolius J. Presl (Potamogetonaceae) in Japan

Shutoh, Kohtaroh; Usuba, Mitsuru; Yamagishi, Hiroki et al.

Acta Phytotaxonomica et Geobotanica, 2020, 71(1), 33-44

Permalink : https://hdl.handle.net/2115/79088

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https://doi.org/10.18942/apg.201914			20

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アクセス権	open access
URI	https://hdl.handle.net/2115/79088
タイトル	A New Record of Potamogeton xangustifolius J. Presl (Potamogetonaceae) in Japan
著者	Shutoh, Kohtaroh ; Usuba, Mitsuru ; Yamagishi, Hiroki ; Fujita, Yushi ; Shiga, Takashi
著者名 Shutoh, Kohtaroh
著者名 Usuba, Mitsuru
著者名 Yamagishi, Hiroki
著者名 Fujita, Yushi
著者名 Shiga, Takashi
言語	英語
キーワード	Aomori Prefecture
	Aquatic plants
	Hybridization
	Japanese flora
	Molecular identification
	Taxonomy
	Tohoku District
発行日	2020-08-20
出版者	Japanese Society for Plant Systematics
収録物名	Acta Phytotaxonomica et Geobotanica
巻(号)	71(1)
ページ	33-44
抄録	Potamogeton xangustifolius (P. gramineus x P. lucens) was newly recorded in Japan from a pond in Tsugaru-shi, Aomori Prefecture. The hybrid nothospecies was identified based on morphological observations and measurements, molecular analyses using cloned nuclear adhA gene and chloroplast rpl20rps12 intergenic spacer, and pollen viability. The putative hybrid had morphological traits intermediate between P. gramineus and P. lucens, nuclear haplotypes matching those of the two parental lineages, and lower pollen viability than P. lucens (not compared with P. gramineus). The maternal lineage of the hybrid was presumed to be P. gramineus, based on chloroplast sequences. The hybrid characteristically shows well-branched stems in the upper part of shoots, as in P. gramineus, and both clearly petiolate and sessile submerged leaves with distinctive netted venation. Similar plants were collected in the 1980s from a ditch near the pond, suggesting that the hybrid may have been present for more than 30 years in this area.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
PISSN	1346-7565
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.18942/apg.201914