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A New Record of Potamogeton xangustifolius J. Presl (Potamogetonaceae) in Japan
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| Title: | A New Record of Potamogeton xangustifolius J. Presl (Potamogetonaceae) in Japan |
| Authors: | Shutoh, Kohtaroh Browse this author | | Usuba, Mitsuru Browse this author | | Yamagishi, Hiroki Browse this author | | Fujita, Yushi Browse this author | | Shiga, Takashi Browse this author |
| Keywords: | Aomori Prefecture | | Aquatic plants | | Hybridization | | Japanese flora | | Molecular identification | | Taxonomy | | Tohoku District |
| Issue Date: | 20-Aug-2020 |
| Publisher: | Japanese Society for Plant Systematics |
| Journal Title: | Acta Phytotaxonomica et Geobotanica |
| Volume: | 71 |
| Issue: | 1 |
| Start Page: | 33 |
| End Page: | 44 |
| Publisher DOI: | 10.18942/apg.201914 |
| Abstract: | 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. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/79088 |
| Appears in Collections: | 総合博物館 (The Hokkaido University Museum) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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