麻疯树白粉病的病原鉴定

First Record of Oidium heveae Steim Causing Powdery Mildew Disease of Jatropha curcas L. in China.

在贵州省罗甸县,白粉病是麻疯树最重要、最常见的病害种类之一。病菌可侵染为害植株的任何部位包括叶片、叶柄、嫩茎、嫩果及成熟果实,导致叶片变黄、提前脱落,或导致花序败育、果实变形。形态学研究表明其病原为Oidium heveae Steim。这是国内首次报道该病原物为麻疯树白粉病的致病病原。

Powdery mildew was among the most serious diseases in the nurseries and plantations of Jatropha curcas L. in Luodian county of Guizhou province, China. The symptoms were powdery growth on petioles, stems, flowers and fruits, and the damage were premature leaf fall, flower abortion, and fruit deformation. Morphological study showed that the causal agent was Oidium heveae Steim. This is the first report of this fungus as the cause agent of powdery mildew disease of J. curcas L. in China.