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Genetic control of corn leaf anthracnose

Variability in resistance to corn (Zea mays) leaf anthracnose caused by Colletotrichum graminicola was detected among four lines and two hybrids for the variables: total area of lesion (ATL), average lesion area (AML), total lesion length (CTL), average lesion length (CML) and lesion number (NL). No differential interaction was detected among isolates of C. graminicola and inbred lines and hybrids. In studies about the mode of resistance to foliar anthracnose, the inbred lines L186 and L64 were susceptible and resistant, respectively, whereas the hybrid L184 x L64 were resistant. The observed frequency of susceptible and resistant F2 plants derived from selfing of F1 plants from the cross L186 x L64 indicated monogenic and dominant control of resistance


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