摘要
江苏省新洋、大中等农场出现的水稻“黑米”是一种细菌性病害 ,与日本报道的水稻粒黑腐病相似 .自病粒分离获得细菌 1 8株 ,人工接种其症状与田间相同 ,再分离菌株的细菌学性状与接种菌株基本一致 .经细菌学鉴定 ,病原菌为欧文氏菌 ( Erwinia) .不同时期不同方法接种试验表明 ,灌浆期注射接种可获得较高的发病率 ,平均达 78.9% ,而其他方法接种发病率均在 1 0 %以下 。
The black grains of rice was caused by the bacterial disease that was similar to the black rot of rice grains in symptoms. 18 isolates were obtained from infected kernel of rice in some farms of Jiangsu. The pathogenicity was determined by artificial inoculation, whose results showed that the rate of disease grains was averagely 78.9%. The isolates were identified by bacteriological methods as herbicola group of Erwinia . Nine inoculation methods using the pathogenic bacteria were compared. The results indicated that injecting bacterial suspension into kernel in the milk stage induced high rate of diseased grains while the others caused low incidence, and the wound on grains in the milk stage might be the main way for the bacterial invasion.
出处
《扬州大学学报（自然科学版）》
CAS
CSCD
2001年第1期52-54,共3页
Journal of Yangzhou University：Natural Science Edition
基金
江苏省教委自然科学基金重点项目 !(98KJBZ2 10 0 0 2)
