香草兰细菌性软腐病病原菌鉴定

1988年,在海南岛兴隆地区首次发现香草兰细菌性软腐病。发病叶片呈水渍状软腐,腐烂病痕的边缘有褐色线纹。在潮湿情况下病痕扩展迅速,以致全叶软腐塌萎。根据对病原菌的细菌学性状、致病性和血清学反应的测定,确认本病的病原菌属于胡萝卜欧氏软腐菌胡萝卜病原型Erwina carotovora pv.carotovora(Jones)Bergey]。

IDENTIFICATION OF PATHOGEN OF BACTERIAL SOFT ROT ON VANILLA FRAGRANS

Bacterial soft rot disease on Vanilla fragrans was not found in Hainan Island until 1988. Water-soaked decay with a brown stripe around the lesion appeared on those infected leaves. The diseased tissue spread quickly under higher humidity, that ultimately led to collapse of the whole leaf blade. Based on bacteriological analysis, pathogenicity and serological reaction, the causal agent was identified as Erwinia carotovora pv. carotovora.