Abstract
The present study was carried out at ICAR-National Bureau of Plant Genetic Resources, New Delhi during 2020–21to evaluate the differential reaction of 69 germplasm accessions representing black gram [Vigna mungo (L.) Hepper] landraces and its crop wild relatives for resistance against Callosobruchus maculatus (Fab.) under artificial infestation et-up using ‘No-choice test’ method and analyze their genetic diversity using SSR markers. After emergence of adult beetles, the accessions were studied for the growth parameters like total oviposition, exit holes, adult emergence (AE), per cent seed weight loss (PSWL) and growth index (GI), which varied significantly. Based on the key traits, viz. AE and PSWL, the accessions were categorized into six groups, viz. immune (I), resistant (R), moderately resistant (MR), moderately susceptible (MS), susceptible (S) and highly susceptible (HS). Accessions IC259504 (Vigna vexillata) and IC424616 (Vigna mungo) were immune and resistant to bruchid infestation respectively. Moreover, the genetic diversity parameters such as allele number, PIC values and observed heterozygosity indicated considerable diversity among the accessions. The reported immune and resistant accessions could be used as donor parents in the Vigna breeding programme for transferring bruchid resistance factor(s) to agronomically superior cultivars.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.