Genetic variation of invasive aquatic plant Elodea nuttallii (Planch.) St. John (Hydrocharitaceae) in Japan.
Elodea nuttallii (Planch.) St. John is a submerged aquatic plant, which is native in temperate North America. It has invaded Japan from Hokkaido to Kyushu but the time and the course of the invasion are not clear. The RAPD analysis of this study showed that genetic variation within E. nuttallii in Japan for the first time. The result suggests multiple invasions of E. nuttallii to Japan in the past.