Title:	Production and biochemical responses of cowpea under thermal and water stress.
Authors:	BARROS, J. R. A. GUIMARÃES, M. J. M SILVA, R. M. e SIMOES, W. L. MELO, N. F. de ANGELOTTI, F.
Affiliation:	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.
Date Issued:	2021
Citation:	Revista Brasileira de Ciências Agrárias, v. 16, n.2, e8599, 2021.
Description:	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.
Thesagro:	Feijão Potencial Hídrico Temperatura
NAL Thesaurus:	Cowpeas Abiotic stress Heat stress Heat stress disorders Grain yield Oxidative stress Soil water deficit
Keywords:	Estresse abiótico Estresse por calor Produção de grãos Estresse oxidativo Vigna unguiculada Feijão caupi Déficit hídrico
ISSN:	1981-0997
DOI:	10.5039/agraria.v16i2a8599
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATSA)