Data/hora: 12/06/2024 02:00:29

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 19/02/2016
Data da última atualização: | 02/03/2017
Autoria: | LANNA, A. C.; MITSUZONO, S. T.; TERRA, T. G. R.; VIANELLO, R. P.; CARVALHO, M. A. de F.
Afiliação: | ANNA CRISTINA LANNA, CNPAF; SUZY TAEKO MITSUZONO, UFG; THIAGO GLEDSON RIOS TERRA, UFV; ROSANA PEREIRA VIANELLO, CNPAF; MILENE ALVES DE FIGUEIREDO CARVALHO, SAPC.
Título: | Physiological characterization of common bean (Phaseolus vulgaris L.) genotypes, water-stress induced with contrasting response towards drought.
Ano de publicação: | 2016
Fonte/Imprenta: | Australian Journal of Crop Science, v. 10, n. 1, p. 1-6, 2016.
ISSN: | 1835-2707
Idioma: | Inglês
Conteúdo: | 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.
Palavras-Chave: | Physiological mechanisms; Tropical conditions.
Thesagro: | Características agronômicas; Deficiência hídrica; Feijão; Phaseolus vulgaris; Resistencia a seca.
Thesaurus Nal: | Agronomic traits; Plant-water relations.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/139430/1/CNPAF-2016-ajcs.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (33944-1) - UPC - AP - DD - 2016 -  - 2016 - DIS