Phyllosticta cruenta에 의한 둥굴레 갈색점무늬병 |
권진혁, 진영민, 심창기, 쩐티펑지 |
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Brown Leaf Spot of Doonggulle (Polygonatum odoratum) Caused by Phyllosticta cruenta |
Jin Hyeuk Kwon, Young Min Jin, Chang Ki Shim, Tran Thi Phuong Chi |
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Abstract |
Brown leaf spot caused by Phyllosticta cruenta from 2007 to 2009 occurred severely in an herbs exhibition on Doonggulle (Polygonatum odoratum) at Gangju pond in Jeongchon-myon, Jinju city, Gyeongnam province, Korea. The typical symptoms of this disease were appeared on the brown leaf spot of leaves. Lesions on the leaves were appeared elliptical or irregular with 2~8 mm in size. Infected leaves were wilted, blighted and eventually died. Pycnidiospores and pycnidia of the fungus were abundantly formed on PDA. The optimum temperature for mycelial growth was 20~25oC. Pycnidiospores were not readily formed on PDA, colorless in color, globose~subglobose in shape, 10~18×5~12 μm in size and appendage hanged 4~15 μm in size. Pycnidia were globose~subglobose in shape, dark brown in color and 60~162×70~174 μm in size. On the basis of mycological characteristics and pathogenicity test on host plants, the fungus was identified as Phyllosticta cruenta (Kunze: Fries) Kickx. This is the first report on the brown leaf spot of Doonggulle caused by P. cruenta in Korea. |
Key Words:
Brown Leaf spot, Doonggulle, Phyllosticta cruenta, Polygonatum odoratum |
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