Cowpea [Vigna unguiculata (L.) Walp.] is an important protein source in diets in Brazil. The preference of consumers is for large, white, light brown and evergreen seeds with rugose coat and small hilum and hilum ring. The Cowpea severe mosaic virus (CPSMV) and the Cowpea aphid-borne mosaic virus (CABMV) are the main pathogens in cowpea plantations in Brazil. This study selected cowpea offspring with (i) white rugose coat seed characteristics that are accepted by markets and (ii) that present resistance to CPSMV (serotype I) and CABMV. The first selection of asymptomatic plants was carried out using seedlings from F 3 seeds mechanically inoculated with a mixture of the two viruses. Offspring F 3:4 went through a second selection process with two stages, one in the field (with natural inoculation), one in trays (with mechanical inoculation). In total, 40 F 3:4 offspring were selected to evaluate agronomic traits in two field assays, one in Teresina, one in Tracuateua (states of Piauí and Pará, respectively) based on a randomized block design with four repetitions. Significant effect of genotype and of the interaction assay x genotype was observed (p ≤ 0.01) for most of the traits evaluated: weight of 100 seeds, yield, seed length, width, and height; length-to-height ratio; width-toheight ratio, and hilum width-to-length ratio. Fourteen offspring produced large seeds (25 -30 g in 100 seeds), and four presented cross-resistance to CPSMV and CABMV, while 36 offspring were resistant only to CPSMV.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.