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Host plant response of OhS10 maize lines to northern leaf blight of maize in Uganda



Host plant response of OhS10 maize lines to northern leaf blight of maize in Uganda



Applied Plant Science 12(2): 47-49



A study was conducted it the Makerere University Agricultural Research Institute, Kabanyolo, from 1993 to 1994 to evaluate 20 OhS10 maize lines for resistance to NLB caused by Exserohilum turcicum. Plants were artificially inoculated using infested sorghum seeds. Generally, OhS10 lines had fewer lesions and a lower area under disease progress curve (AUDPC) than Mo17, the polygenic resistant check. Three lines, S2-20-1, S1-20, and S1-30 showed high levels of resistance to E. turcicum. A multivariate analysis (PCA) revealed that percentage leaf area blighted, lesion numbers and AUDPC were the most important parameters in estimating maize host plant response to E. turcicum. Some OhS10 lines with high levels of rate-reducing resistance could be of importance in the region's maize improvement programmes against E. turcicum.

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Accession: 003161950

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