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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Physiological characterization of common bean (Phaseolus vulgaris L.) genotypes, water-stress induced with contrasting response towards drought.
Autores:  LANNA, A. C.
MITSUZONO, S. T.
TERRA, T. G. R.
VIANELLO, R. P.
CARVALHO, M. A. de F.
Data:  2016-02-19
Ano:  2016
Palavras-chave:  Tropical conditions
Physiological mechanisms
Feijão
Phaseolus vulgaris
Resistencia a seca
Deficiência hídrica
Características agronômicas
Plant-water relations
Agronomic traits
Resumo:  Among the three annual common bean seasons in Brazil, two of them are subject to drought. The objective of this study was to identify physiological traits in common bean under water restriction. The common beans genotypes, BAT 477 (tolerant to water-stress) and Perola (sensitive to water-stress), were grown under greenhouse conditions under two different watering regimes: irrigated (control treatment) and non-irrigated (stress treatment). The water deficit treatment consisted of suspension of irrigation to the plants at 10 days after emergence (DAE) (at the V2 physiological stage) for 30 days, followed by the irrigation?s re-establishment at 40 DAE (at the R6-R7 physiological stage) up to the phase of physiological maturity of the grains for assessment of grain yield and production components. Under water-stress, BAT 477 showed less reduction in grain yield (33%), more capacity for osmotic adjustment (0.30 MPa) and superiority in the root system´s development (~50%) compared to Perola that showed a 53% reduction in the grain yield and 0.06 MPa of osmotic adjustment. In this study, the robustness of the root system and osmotic adjustment are the main physiological indicators of tolerance to water deficit in common bean plants.

2016
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  1835-2707

33944

http://www.alice.cnptia.embrapa.br/handle/doc/1037693

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/139430/1/CNPAF-2016-ajcs.pdf
Editor:  Australian Journal of Crop Science, v. 10, n. 1, p. 1-6, 2016.
Relação:  Embrapa Arroz e Feijão - Artigo em periódico indexado (ALICE)
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