First record of Neoerysiphe cumminsiana on horseweed in India
P. Baiswar A B , S. Chandra A and S. V. Ngachan AA ICAR Research Complex for NEH Region, Umiam, Meghalaya 793103, India.
B Corresponding author. Email: pbaiswar@yahoo.com
Australasian Plant Disease Notes 3(1) 156-157 https://doi.org/10.1071/DN08060
Submitted: 23 June 2008 Accepted: 10 November 2008 Published: 20 November 2008
Abstract
In March 2008, a severe outbreak of powdery mildew disease was observed on horseweed (Conyza canadensis = Erigeron canadensis). Based on the morphological characters, the pathogen was identified as the anamorph of Neoerysiphe cumminsiana. This is the first report of this organism causing powdery mildew on C. canadensis in Meghalaya, India.
Acknowledgements
The authors would like to thank Prof. Dr Uwe Braun for confirming the identity of the anamorph of Neoerysiphe cumminsiana. Authors are also grateful to Dr D.K. Hore for identification of the host and to Ms. Mariana Dkhar for providing the sample.
Correll JC,
Gordon TR, Elliott VJ
(1987) Host range, specificity and biometrical measurements of Leveillula taurica in California. Plant Disease 71, 248–251.
| Crossref | GoogleScholarGoogle Scholar |
Grbelja J,
Eric Z, Jeknic Z
(1988) Erigeron canadensis L. – a potential source of infection by the tomato bushy stunt virus for cultivated plants. Fragmenta Herbologica Jugoslavica 17, 95–99.
Sarpe N, Torge C
(1980) The effect of some weed associations with Sinapis, Setaria, Erigeron, Amaranthus, Cirsium and Convolvulus as the dominant genera on the root production of sugar-beet. Akademie der Landwirtschaftswissenschaften. Deutsche Demokratische Republik. Tagungsbericht 182, 105–112.
Weaver SE
(2001) The biology of Canadian weeds. Conyza canadensis. Canadian Journal of Plant Science 81, 867–875.
