Data/hora: 09/06/2024 21:12:30

Biblioteca(s): | Embrapa Semiárido.
Data corrente: | 07/06/2021
Data da última atualização: | 30/06/2021
Autoria: | BARROS, J. R. A.; GUIMARÃES, M. J. M; SILVA, R. M. e; SIMOES, W. L.; MELO, N. F. de; ANGELOTTI, F.
Afiliação: | JULIANE RAFAELE ALVES BARROS, Universidade Estadual de Feira de Santana, Feira de Santana, BA; MIGUEL JÚLIO MACHADO GUIMARÃES, Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, São Raimundo das Mangabeiras, MA; RODRIGO MOURA E SILVA, Universidade de Pernambuco, Petrolina, PE; WELSON LIMA SIMOES, CPATSA; NATONIEL FRANKLIN DE MELO, CPATSA; FRANCISLENE ANGELOTTI, CPATSA.
Título: | Production and biochemical responses of cowpea under thermal and water stress.
Ano de publicação: | 2021
Fonte/Imprenta: | Revista Brasileira de Ciências Agrárias, v. 16, n.2, e8599, 2021.
ISSN: | 1981-0997
DOI: | 10.5039/agraria.v16i2a8599
Idioma: | Inglês
Conteúdo: | Water deficit and high temperature limit agricultural productivity, affecting plant growth, development, and metabolism. Thus, the objective of this study was to evaluate the impact of the interaction between water deficit and temperature increase on cowpea production. The experiment was carried out with the cultivar BRS Rouxinol, in growth chambers, in a 4 × 2 factorial arrangement, being four soil water availability (25; 50; 75 and 100% of field capacity) and two daily temperature regimes (T°1: 20-26-33 °C and T°2: 24.8-30.8-37.8 °C). The increase in water availability favored an increase in shoot and root dry mass. The vegetative stage was prolonged in plants maintained at a temperature regime of 24.8-30.8-37.8 °C. The cowpea yield increased with higher water availability. The water availability of 90% was the one that provided the highest water use efficiency. The 4.8°C increase in air temperature promotes an increase in oxidative stress with lack of synchrony in the antioxidative defense system. The cultivar Rouxinol is sensitive to the increase in air temperature and water deficit. However, even with 100% water availability, there was no seed production with an increase in air temperature.
Palavras-Chave: | Déficit hídrico; Estresse abiótico; Estresse oxidativo; Estresse por calor; Feijão caupi; Produção de grãos; Vigna unguiculada.
Thesagro: | Feijão; Potencial Hídrico; Temperatura.
Thesaurus Nal: | Abiotic stress; Cowpeas; Grain yield; Heat stress; Heat stress disorders; Oxidative stress; Soil water deficit.
Categoria do assunto: | A Sistemas de Cultivo
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/223679/1/Production-and-biochemical-responses-2021.pdf
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (59554-1) - UPC - AP - DD -  -  -  - DIS