| Registro completo |
| Provedor de dados: |
Bragantia
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| País: |
Brazil
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| Título: |
Evaluation of common bean genotypes for phosphorus use efficiency in Eutrophic Oxisol
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| Autores: |
Silva,Daiana Alves da
Esteves,Jose Antonio de Fatima
Gonçalves,João Guilherme Ribeiro
Azevedo,Cleber Vinícius Giaretta
Ribeiro,Tamires
Chiorato,Alisson Fernando
Carbonell,Sérgio Augusto Morais
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| Data: |
2016-06-01
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| Ano: |
2016
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| Palavras-chave: |
Phaseolus vulgaris
Abiotic stress
Plant nutrition
Genotype classification
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| Resumo: |
ABSTRACT Common bean is one of the most important legumes in Latin America, mostly grown in soils with low phosphorus (P) availability. Thus, this study aimed to evaluate the responses of 20 bean genotypes to P deficiency. The experiment was a completely randomized design in a 2 × 20 factorial arrangement; the first factor consisted of P levels and the second factor, of 20 bean genotypes, with six replications. The substrate was a Red Eutrophic Oxisol with low P content. For application of the P treatments, it was applied simple superphosphate, consisting of two levels: restrictive and control, with the application of 45 and 90 kg∙ha–1 of P2O5, respectively. At 28 days, we observed the first symptoms of nutrient deficiency, with the decrease in the relative chlorophyll index in the restrictive level treatment. In addition, the treatments were effective in differentiating effects of both factors levels of P and genotypes for most traits evaluated relative to shoot, root and grain yield. It was possible to classify the genotypes in relation to use efficiency and responsiveness to P application, according to their average yield performances. Seven genotypes presented better performances for both P levels, being classified as Efficient and Responsive: G 2333, IAC Carioca Tybatã, IAPAR 81, IAC Imperador, IAC Formoso, BRS Esplendor and IPR Tangará; the first four genotypes were also classified as Efficient and Responsive under hydroponic conditions.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000200152
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| Editor: |
Instituto Agronômico de Campinas
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| Relação: |
10.1590/1678-4499.454
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| Formato: |
text/html
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| Fonte: |
Bragantia v.75 n.2 2016
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| Direitos: |
info:eu-repo/semantics/openAccess
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