Root and stem rot of chrysanthemum caused by five <Emphasis Type="Italic">Pythium</Emphasis> species in Japan |
| |
Authors: | Takao Tsukiboshi Yoshiaki Chikuo Yoko Ito Yosuke Matsushita Koji Kageyama |
| |
Institution: | (1) National Institute of Livestock and Grassland Science, Senbonmatsu 768, Nasushiobara Tochigi, 329-2793, Japan;(2) National Institute of Floricultural Science, Fujimoto 2-1, Tsukuba Ibaraki, 305-8519, Japan;(3) River Basin Research Center, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan |
| |
Abstract: | Root and stem rot with wilt of above ground parts of cultivated chrysanthemums was first found in Ibaraki, Toyama and Kagawa
prefectures, Japan in 2002 and 2003. Pythium species were isolated from the diseased tissues and identified as P. dissotocum, P. oedochilum, P. sylvaticum, P. ultimum var. ultimum and asexual strains of P. helicoides based on their morphologies and sequences of rDNA-ITS region. All the Pythium species were strongly pathogenic to chrysanthemums in pot conditions and were reisolated from the inoculated plants. Because
Pythium root and stem rot of chrysanthemum has never been reported in Japan, we propose that this is a new disease that can
be caused by the five Pythium species. |
| |
Keywords: | Chrysanthemum morifolium Chrysanthemum Pythium root and stem rot Pythium spp |
本文献已被 SpringerLink 等数据库收录! |
|