论文部分内容阅读
Thepowdery mildew is rarely occurred on Rheum rhabarbarum(Polygonaceae).In2003,Erysiphe polygoni was the first mentioned on R.rhabarbarum in China,but it wasn’t provided morphological and molecular data by the researchers.In Aug 2015,Powdery mildewwas foundon R.rhabarbarum in the Medicinal garden of Jilin Agricultural University,Changchun City(43.61°N,125.41°E),China.This sample was identifiedas E.polygoni based on morphological characters and the sequence alignment of ITS.At the same time,the ITS sequence of E.polygoni on R.rhabarbarum was first reported and E.polygoni as a new pathogen on R.rhabarbarumwas firstly reported in Jilin province.
The powdery mildew is a very small event on Rheum rhabarbarum (Polygonaceae). In 2003, Erysiphe polygoni was the first mentioned on R. rhabarbarum in China, but it was not provided morphological and molecular data by the researchers. In Aug. 2015, Powdery mildewas foundon R. rhabarbarum in the Medicinal garden of Jilin Agricultural University, Changchun City (43.61 ° N, 125.41 ° E), China. This sample was identified as E. polygoni based on morphological characters and the sequence alignment of ITS. At the same time, the ITS sequence of E. polygoni on R. rhabarbarum was first reported and E. polygoni as a new pathogen on R. rhabarbarumwas th pre-recorded in Jilin province.