First Occurrence of Verticillium Wilt of Dahlia, Small Globethistle and Gayfeather Caused by Verticillium dahliae Klebahn in Japan

Abstract

Verticillium wilt of dahlia Dahlia×cultorum Thorsr. et Reis., small globethistle Echinops ritro L. and gayfeather Liatris spicata (L.) Willd. occurred in Tokyo Metropolis in 1997. The causal fungus isolated from the diseased plants was identified as Verticillium dahliae Klebahn by morphological observations and inoculation tests. This is the first report on these diseases in Japan.