Additional Sources of Resistance for Southern Corn Leaf Blight in Indian Maize Germplasm

Authors : Ram P SRIVASTAVA

Pages : 41-44

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Publication Date : 2017-01-31

Article Type : Research Paper

Abstract :Seventy nine maize inbred lines were screened under artificial epiphytotic condition at two locations viz, Nagenahalli and Varanasi for continuously for 2 years to identify the additional sources of resistance for ‘Southern Corn Leaf Blight insert ignore into journalissuearticles values(SCLB);. The Southern Corn Leaf Blight caused by Bipolaris maydis is also known as ‘Maydis Leaf Blight’. The present study has helped in the identification of 26 resistant inbred lines, 25 moderately resistant, 16 susceptible and 12 highly susceptible maize genotypes. Ten lines viz. V53, V 178, V 190, V 336, V 340, V 341, V 345, V 348, CM 104 and CM 145 by scoring below 1.5 disease score showed high level of resistance, whereas inbred lines viz., V 49, CM 126, CM 127, CM 202 and CM 212 showed high level of susceptibility as they scored above 3.5 disease score across the environment. It was also observed that average disease incidence was high in Nagenahalli than Varanasi thus indicating that isolates of Bipolaris maydis were more virulent at Nagenahalli than Varanasi.
Keywords : Southern corn leaf blight, Bipolaris maydis, Zea mays, resistance, susceptible