| Collar rot caused the death of Hevea rubber. In order to elucidate the causal agent of Collar rot and its
taxonomic status袁the causal bacterium was isolated and characterized with the pathogenicity test袁morphology袁culture
feature observation袁and biological characteristics test. The results indicated that the causal agent belonged to Fusarium
venfricosum援The pathogenic fungus could grow at temperatures ranging from 10益to 40益, and the most suitable temperature
was 30益. When above 40益or below 10益, the growth of mycelium was inhibited. The accumulating water in wet season was
the main reason for occurrence of this disease. |
