Selection of phenotypic traits and resistance to Cowpea severe mosaic virus and Cowpea aphid-borne mosaic virus in cowpea [Vigna unguiculata (L.) Walp.] seeds with rugose white coat
| Autor: | Â. C. de A. Lopes, M. do S. da R. Nogueira, Marcelo Eiras, L. K. Rodrigues, Valdenir Queiroz Ribeiro, F. R. Freire Filho, U. S. Leão |
|---|---|
| Přispěvatelé: | UESLEI SILVA LEÃO, UFPI, LEILANE KARAM RODRIGUES, INSTITUTO BIOLÓGICO, VALDENIR QUEIROZ RIBEIRO, CPAMN, ÂNGELA CÉLIS DE ALMEIDA LOPES, UFPI., MARCELO EIRAS, INSTITUTO BIOLÓGICO, FRANCISCO RODRIGUES FREIRE FILHO, CPATU, MARIA DO SOCORRO DA ROCHA NOGUEIRA, CPAMN |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Coat Mosaic virus biology Inoculation Melhoramento genético Feijão-caupi Randomized block design food and beverages Plant Science Phenotypic trait Plant disease resistance Semente biology.organism_classification 01 natural sciences Vigna 03 medical and health sciences Horticulture 030104 developmental biology Agronomy Plant virus Doença Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| ISSN: | 1835-2707 1835-2693 |
| Popis: | 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 F3 seeds mechanically inoculated with a mixture of the two viruses. Offspring F3:4 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 F3:4 offspring were selected to evaluate agronomic traits in two field assays, one in Teresina, one in Tracuateua (states of Piau and Par , respectively) based on a randomized block design with four repetitions. Significant effect of genotype and of the interaction assay x genotype was observed (p |
| Databáze: | OpenAIRE |
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