Title:	Cowpea: prospecting for heat-tolerant genotypes.
Authors:	SILVA, J. de A. BARROS, J. R. A. SILVA, E. G. F. ROCHA, M. de M. ANGELOTTI, F.
Affiliation:	JAQUELINE DE ALMEIDA SILVA, UNIVERSIDADE DE PERNAMBUCO; JULIANE RAFAELE ALVES BARROS, FUNDAÇÃO DE AMPARO À CIÊNCIA E TECNOLOGIA DO ESTADO DE PERNAMBUCO; ELIOENAI GOMES FREIRE SILVA, UNIVERSIDADE DE PERNAMBUCO; MAURISRAEL DE MOURA ROCHA, CPAMN; FRANCISLENE ANGELOTTI, CPATSA.
Date Issued:	2024
Citation:	Agronomy, v. 14, n. 9, Aug. 2024.
Description:	Selecting genotypes tolerant to high temperatures is an important measure for agricultural maintenance and production in climate change scenarios. Thus, this study aimed to select cowpea genotypes tolerant to increased air temperature. A total of 20 cowpea genotypes were used, cultivated under temperature regimes of 20–26–33 °C and 24.8–30.8–37.8 °C in a completely randomized experimental design under a 2 × 20 factorial scheme (temperature regimes × genotypes). The BRS Inhuma, Bico-de-Ouro-17-45, BRS Guariba, and BRS Imponente genotypes did not show significant differences in the analyzed physiological responses to the increase in air temperature. The BRS Inhuma, Bico-de-Oouro-17-19, Bico-de-Ouro-17-44, Bico-de-Ouro-17-45, BRS Guariba, and BRS Imponente genotypes showed increased temperature tolerance as thermal stress did not affect production. The Pingo-de-Ouro-17-48, MNC00-595F-27, MNC06-895E-1, and MNC09-981B-2 genotypes reduced water efficiency by −26.85, −25.19, −40.04, and −60.37%, respectively, due to the increase in temperature. The results obtained in this work represent a pre-selection of genotypes that are tolerant to high temperatures, with the BRS Inhuma, Bico-de-Ouro-17-45, BRS Guariba, and BRS Imponente genotypes indicated as tolerant to increased temperatures based on the interaction of physiological and productive responses. There is an urgent need to select cowpea genotypes tolerant to increased temperature to maintain production in climate change scenarios and ensure agricultural systems’ sustainability and food security.
Thesagro:	Feijão Genótipo Mudança Climática
NAL Thesaurus:	Abiotic stress Cowpeas Agriculture
Keywords:	Feijão caupi Aumento da temperatura do ar Estresse abiotico
DOI:	https://doi.org/ 10.3390/agronomy14091969
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATSA)