Adaptability of Several Cucurbit Plants for Use as Rootstocks to Prevent Cucumber Black Root Rot Caused by Phomopsis sclerotioides

Abstract

In Iwate Prefecture, the incidence of black root rot of cucumber caused by Phomopsis sclerotioides has been increasing. To prevent this disease, several Cucurbitaceae plants were examined as the resistant rootstocks for grafting to cucumber plants. Among Cucurbitaceae plants used in this study, several cultivars（Atom, Naga-tougan and Okinawakogata-tougan）of Benincasa hispida was found to be effective. However, the Atom cultivar showed inadequate adaptability for grafting to cucumber plants.