Abstract: Freshly produced conidia were collected from barley grain medium by washing with distilled water, the spore suspension is filtered onto filter paper in a funnal, dried at 30-35℃, and stored in desiccator at indoor, 4℃ and -20℃.The conidia retained their original level of viability and pathogenicity after 10 months indoor,there are further preservation times at 4℃ and -20℃. Thus,the problem is solved that culture rice seedling can not synchronize with sporulation culture of blast fungus during the artifical inoculation.

Key words: Pyricularia oryzae, Conidia, Viability, Pathogenicity, Conidia preservation

摘要： 将载有稻瘟病菌孢子的滤纸置于不同温度和干燥条件下保存,经分期测定,室内干燥保存,经10个月,不论是孢子活力和致病性一般均可维持原有水平。低温干燥保存则能保存更长的时间。这样解决了目前人工接种中稻苗和孢子的培养难以配合的问题。

关键词: 稻瘟病菌, 孢子, 活力, 致病性, 孢子保存