Assessing Pigeonpea Genotypes for Resistance against Maruca vitrata Fabricius and its Sustainable Management through Biorationals

• DOI: 10.18805/lr-5132
• Publication Date: 2023-08-01T11:02:49Z
• Authors: G.K. Sujayanand; Dibendu Datta; Anup Chandra; Sonika Pandey
• Keywords: Cajanus

Background: The spotted pod borer (SPB), Maruca vitrata Fabricius is a key insect pest of major legume crop i.e. pigeonpea, Cajanus cajan in India and semi-arid tropics. Identifying SPB resistant genotype will help sustainable management attaining nutritional security. has developed insecticide resistance to most the chemical like Organophosphorous group insecticides also it expanding its geographic limits. These factors are driving forces for identifying tolerant genotypes along with suitable biorational. Methods: Forty seven pigeonpea were screened during kharif 2015 2017 at ICAR-IIPR, Kanpur based on percent damage Pest Resistance Susceptibility Rating (PRSR) under free condition. 4 biorationals tested against ICPL 87 untreated control Randomised Block Design. Further molecular identity was confirmed by phylogenetic analysis partial Cox 1 gene amplified from M. adult. Results: Two indeterminate (Pusa2001 Pusa33) as lowest mean susceptibility rating (PRSR 1.7) next best determinate (AL-15) (LRG-30) PRSR 2.0. highest (6.0) recorded 87, susceptible check present experiment. Spinosad 45SC significantly (6.67%) yield (4.36kg/35m2) compared other treatments field efficacy trial. population (KY559101) 19 populations revealed that more similar Raichur (KT070892) confirms same ancestral homology India.