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- W2290279625 abstract "Resumo†n†O caupi (Vigna unguiculata (L.) Walp) O um alimento bAEsico das populaAies do Nordeste brasileiro, devendo merecer atenAao com vistas a melhoria da qualidade de graos, resistŒncia a doenAas e pragas e aumento de produtividade. Este trabalho teve por objetivo estudar a variabilidade e o poten- cial genOtico de 28 linhagens, escolhidas apUs uma seleAao para cor, tamanho de graos e resistŒncia a viroses. A produtividade apresentou coeficiente de variaAao genOtico de 23,90%, e o valor agronUmi- co, de 3,56%. O nœmero de vagens por pedœnculo apresentou a menor estimativa do coeficiente de determinaAao genOtico (4,51%), e o peso de 100 graos, a maior (81,74%). O coeficiente de determina- Aao genOtico da produtividade foi de 34,15%. As maiores estimativas de ganho genOtico foram as do peso de 100 graos (21,73%) e da produtividade (19,77%). As correlaAies genotIpicas foram superio- res ‡s fenotIpicas e ‡s de ambiente, destacando-se as correlaAies entre nœmero de ramos secundAErios e produtividade (68,13%), e valor agronUmico e produtividade (100%). Estes resultados mostram am- plas possibilidades de seleAao entre as linhagens com relaAao ‡ maioria dos caracteres estudados. Termos para indexaAao: progŒnie, seleAao, variaAao genOtica, componentes de rendimento, produtivi- dade. Abstract†n†Cowpea (Vigna unguiculata (L.) Walp) is an important food crop for human population in northeastern Brazil. Studies aiming to increase its yield as well as to improve the grain quality and the insect and diseases resistance are needed. This work aimed to accomplish genetic studies in twenty- eight cowpea advanced lines. The studied lines were chosen after selection for seed color and size and plant viruses resistance. The degree of genetic determination ranged from 4.51% (in pods/peduncle) to 81.74% (in 100-seed weight). The seed yield degree of genetic determination was 34.15%. The highest estimates of genetic gain were 21.73% to 100-seed weight and 19.77% to seed yield. The genotypical correlations were higher than phenotypical and environmental ones. High correlations were found between fruiting branches/plant and seed yield (68.13%) and between agronomic value and seed yield (100%). This result indicates the selection feasibility for most of the studied traits." @default.
- W2290279625 created "2016-06-24" @default.
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- W2290279625 date "2001-01-01" @default.
- W2290279625 modified "2023-09-27" @default.
- W2290279625 title "Variabilidade e correlaÁies entre caracteres agronÙmicos em caupi (Vigna unguiculata) (1)" @default.
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