草菇绿粘帚霉病害的初步研究

PRELIMINARY STUDY ON THE STRAW MUSHROOM DISEASE Gliocladium virens

报道了草菇（Ｖｏｌｖａｒｉｅｌｌａｖｏｌｖａｃｅａ）上由绿粘帚霉（ＧｌｉｌｃｌａｄｉｕｍｖｉｒｅｎｓＭｉｌｌｅｒ）引起的绿霉病并对致病菌的生长温度、ｐＨ范围、需氧等生理特性及寄主范围做了初步研究。

A pathogenic fungus Gliocladium virens was isolated in 1993 from the fruiting bodies of straw mushroom,Volvariella volvacea.the inoculation test showed that the fungus could cause serious damage to the mushroom in a few days.The pathogen could penetrate the mycelia of the mushroom,develop into the conidiophores through the cell wall,and at last make the mushroom mycelia collapsed.The dis-eased mushroom stopped growing and the white fruiting bodies turned to dark-green in colour then shrank and rotted finally.Based on the fungus morphology,cultural charactistics,and pathogenicity,the pathogenic fungus was identified as Gliocladium virens Miller etal.The resulting experiment showed that the optimum temperature and pH-value for the development of the pathogenic fungus ware 25～30℃ and 6～8 respectively and it requires sufficient oxygen.