Data/hora: 10/06/2024 04:34:34

Biblioteca(s): | Embrapa Arroz e Feijão.
Tipo da produção científica: | Artigo em Periódico Indexado
Data corrente: | 03/08/2004
Data da última atualização: | 07/04/2022
Autoria: | FAGERIA, N. K.; COSTA, J. G. C. da.
Afiliação: | NAND KUMAR FAGERIA, CNPAF; JOAQUIM GERALDO CAPRIO DA COSTA, CNPAF.
Título: | Evaluation of common bean genotypes for phosphorus use efficiency.
Ano de publicação: | 2000
Fonte/Imprenta: | Journal of Plant Nutrition, v. 23, n. 8, p. 1145-1152, 2000.
DOI: | 10.1080/01904160009382088
Idioma: | Inglês
Conteúdo: | A greenhouse experiment was conducted to evaluate phosphorus (P)-use efficiency of 10 promising genotypes of common bean (Phaseoius vulgaris L.) with short and normal growth duration. The genotypes were grown on an Oxisol at 25 mg P kg-1 (low P) and 150 mg P kg-1 (high P) of soil. Shoot and root dry weight, root length, P concentration in the shoot, and P uptake in the shoot were significantly (P<0.01) affected by soil P concentration and genotype. However, P level did not effect root length and genotype had no effect on root dry weight. On the basis of P-use efficiency (mg dry weight of shoot/mg P accumulated in the shoot) genotypes were classified as efficient and responsive (ER), efficient and nonresponsive (ENR), nonefficient and responsive (NER), and nonefficient and nonresponsive (NENR). From a practical point of view, genotypes which produce a lot of dry matter in a soil with a low P level, and respond well to added P are the most desirable because they are able to express their high yield potential in a wide range of P environments. Novo Jalo and Pérola genotypes fall into this group. Genotypes Irai, Jalo Precoce and L93300166 fall into the ENR group. Genotypes Carioca, Rosinha G-2, and Xamengo were classified NER, whereas, genotypes L93300176 and Diamante Negro were classified as NENR. There were no differences between short and normal growth duration genotypes in P-use efficiency.
Thesagro: | Feijão; Fósforo; Phaseolus Vulgaris.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (21579-1) - UPC - AP - DD - 2000 -  - 2000 - DIS