Northern leaf spot, caused by Cochliobolus carbonum, is an important corn disease that is favored by the temperate mountain climate, and is the most important factor limiting the production of corn in Yunnan Province, China. Cultural characteristics and pathogenic diversity of 25 isolates of C. carbonum from Yunnan were studied. The isolates showed some variation in colony morphology and sporulation on potato lactose agar (PLA) medium. Pathogenicity test of the isolates on 8 differential corn inbred lines demonstrated that races 2 and 3 of C. carbonum caused the greatest losses in maize production in Yunnan. However, lines MU-4 and W-8053 were resistant to all race 3 isolates, whereas line s37 showed resistance response to all race 2 isolates. The pathogencity and virulence of all isolates were studied on 40 cultivars.
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Citation: Zhang JX, Yi-Xin Wu, Hon-Hing Ho, Can-Hua Lu, Yue-Qiu He (2013) Cultural Characteristics and Pathogenic Variations among Cochliobolus carbonum Isolates in Yunnan Province of China. J Plant Pathol Microb 4: 210.
Last date updated on April, 2024
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