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VOL. 6, ISSUE 4 (2021)
Field screening of blackgram accessions for resistance against spotted pod borer Maruca vitrata (Geyer)
Authors
P Pavithradevi, N Muthukumaran
Abstract
Blackgram (Vigna mungo L.) is an important pulse crop in the semi-arid tropics and subtropical farming systems, providing high quality vegetable protein. Spotted pod borer, Maruca vitrata (Geyer) is the devastating pest on blackgram. For varietal screening studies, 100 accessions were screened against Maruca. Population of Maruca larvae as well as Pod damage due to its feeding was recorded during two consequent Rabi seasons, 2020 & 2021. Among the accessions, six accessions were categorized under Resistant with no pod damage in both the seasons, thirteen accessions were grouped under moderately resistant, twenty five accessions were categorized under Tolerant, fifty four accessions were classified as moderately susceptible and two were grouped under highly susceptible in first season. In second season six accessions were categorized under moderately resistant and twenty two accessions were tolerant. Sixty four accessions were comes under moderately susceptible and two were identified as highly susceptible. Among the accessions, Sivanmalai local recorded significantly highest pod damage (46.17%) with mean larval population of 3.02.
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Pages:242-244
How to cite this article:
P Pavithradevi, N Muthukumaran "Field screening of blackgram accessions for resistance against spotted pod borer <em>Maruca vitrata</em> (Geyer) ". International Journal of Entomology Research, Vol 6, Issue 4, 2021, Pages 242-244
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