The Plant Pathology Journal
- Volume 17 Issue 5
- /
- Pages.308-310
- /
- 2001
- /
- 2093-9280(eISSN)
Downy Mildew of Astragalus membranaceous Burge Caused by Peronospora trifoliorum de Bary
- Ryu, Kyoung-Yul (National Alpine Agricultural Experiment Station, Rural Development Administration) ;
-
Kim, Jeom-Soon
(National Alpine Agricultural Experiment Station, Rural Development Administration)
;
- Hahm, Young-Il (National Alpine Agricultural Experiment Station, Rural Development Administration)
- Published : 2001.10.01
Abstract
A severe down mildew of Astragalus membranaceus occurred in Gangwon province in 1999 and 2000. Symptoms developed on young leaves and shoots, showing grayish white mycelium on the lower leaves. The infected plants had reduced internodes and twisted leaflets when the disease was severe. Peronospora trifoliorum was identified as the causal agent of the disease based on mycological characteristics. Pathogenicity of the fungus was confirmed by artificial inoculation. This is the first record of downy mildew on astrgal plant caused by Peronospora trifoliorum in Korea.