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１．美国首次报导马铃薯炭疽病菌Ｃｏｌｅｔｏｔｒｉｃｈｕｍｃｏｃｏｄｅｓ自然侵染大豆，在大豆近基部茎杆上出现病斑，围茎成环状，上生黑色子座，病株种子有８％～１４％被侵染。要注意大豆种子传带此菌。２．保加利亚报道梨火疫病菌Ｅｒｗｉｎｉａａｍｙｌｏｖｏｒａ...
1. The United States reported for the first time that Coletotrichum cocodes, a naturally occurring soybean anthracnose, infects soybeans and displays lesions on the proximal stems of soybeans. The perimeter stems are ring-shaped and have an upward protuberance, with 8% to 14% of infected plant seeds infested. Pay attention to the seeds of soybeans carry this bacteria. 2. Bulgarian reported Erwinia amylovora ...