A Study on Transplanting by cutting for Endangered Plant, Ludwigia peploides ssp. Stipulacea

Ludwigia peploides ssp. Stipulacea is endangered aquatic plant, and grows locally at the Kashio River in Kanagawa Prefecture. However, the sandbar for the habitat of L. Stipulacea will be lost by riverbed excavation work started from 2006. Therefore, the transplantation of L. Stipulacea to alternative habitat has become serious problem. In this study, we experimented in transplantation by cutting method, using subterranean stems and terrestrial stems. As a result, the subterranean stems were corroded when they were buried into the soil that covered with water. Moreover, it was good for growth of the terrestrial stems to transplant to the place where the ground was always covered with water. From these results, in case of using subterranean stems, it was suggested that it is necessary to avoid an anaerobic environment. And in case of using the terrestrial stems, enough moisture is necessary for the growth.