Chlorophyll fluorescence as a tool to select  salinity-tolerant cowpea genotypes

Andrade, Jaima Ribeiro de; Maia Júnior, Sebastião de Oliveira; Barbosa, José Wilson da Silva; Alencar, Aryadne Ellen Vilar de; Jovino, Raphael Silva; Nascimento, Ronaldo do

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dc.creator	Andrade, Jaima Ribeiro de
dc.creator	Maia Júnior, Sebastião de Oliveira
dc.creator	Barbosa, José Wilson da Silva
dc.creator	Alencar, Aryadne Ellen Vilar de
dc.creator	Jovino, Raphael Silva
dc.creator	Nascimento, Ronaldo do
dc.date	2019-09-18
dc.date.accessioned	2023-03-30T19:35:13Z
dc.date.available	2023-03-30T19:35:13Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/3012
dc.identifier	10.14295/cs.v10i2.3012
dc.identifier.uri	https://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/246834
dc.description	The use of saline water reduces the growth and productivity of crops, so the need for techniques that make possible the use of this resource such as the use of salinity tolerant genotypes and efficient selection methods are of great importance. Thus, this study aimed to evaluate the tolerance of cowpea (Vigna unguiculata L. Walp.) genotypes to salt stress, through the chlorophyll fluorescence analysis. The experiment was conducted in a protected environment at the Federal University of Campina Grande, Paraíba, Brazil, using a completely randomized design in a 2 x 10 factorial arrangement, with three replications, consisting of two levels of irrigation water salinity (0.6 and 5.1 dS m-1) and ten cowpea genotypes: (G1: MNCO1-649F-2-1, G2: MNCO3-736F-2, G3: PINGO DE OURO-1-2, G4: BRS GURGUÉIA, G5: BRS MARATAOÃ, G6: MNCO2-676F-3, G7: MNCO2-683F-1, G8: MNCO3-737F-5-4, G9: MNCO3-737F-5-9, and G10: BRS TUMUCUMAQUE). The stem length, stem diameter, SPAD index, and chlorophyll fluorescence transients were evaluated. The G2 and G4 genotypes had the lowest reductions in the growth, stem diameter, initial fluorescence, and primary and maximum photochemical efficiency of PSII, proving to be tolerant to salinity. Chlorophyll fluorescence is a tool that can be used in the selection of salinity-tolerant cowpea genotypes.	en-US
dc.description	The use of saline water reduces the growth and productivity of crops, so the need for techniques that make possible the use of this resource such as the use of salinity tolerant genotypes and efficient selection methods are of great importance. Thus, this study aimed to evaluate the tolerance of cowpea (Vigna unguiculata L. Walp.) genotypes to salt stress, through the chlorophyll fluorescence analysis. The experiment was conducted in a protected environment at the Federal University of Campina Grande, Paraíba, Brazil, using a completely randomized design in a 2 x 10 factorial arrangement, with three replications, consisting of two levels of irrigation water salinity (0.6 and 5.1 dS m-1) and ten cowpea genotypes: (G1: MNCO1-649F-2-1, G2: MNCO3-736F-2, G3: PINGO DE OURO-1-2, G4: BRS GURGUÉIA, G5: BRS MARATAOÃ, G6: MNCO2-676F-3, G7: MNCO2-683F-1, G8: MNCO3-737F-5-4, G9: MNCO3-737F-5-9, and G10: BRS TUMUCUMAQUE). The stem length, stem diameter, SPAD index, and chlorophyll fluorescence transients were evaluated. The G2 and G4 genotypes had the lowest reductions in the growth, stem diameter, initial fluorescence, and primary and maximum photochemical efficiency of PSII, proving to be tolerant to salinity. Chlorophyll fluorescence is a tool that can be used in the selection of salinity-tolerant cowpea genotypes.	pt-BR
dc.format	application/pdf
dc.language	eng
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/3012/841
dc.rights	Copyright (c) 2019 Jaima Ribeiro de Andrade, Sebastião de Oliveira Maia Júnior, José Wilson da Silva Barbosa, Aryadne Ellen Vilar de Alencar, Raphael Silva Jovino, Ronaldo do Nascimento	en-US
dc.source	Comunicata Scientiae; Vol. 10 No. 2 (2019): Comunicata Scientiae; 319-324	en-US
dc.source	Comunicata Scientiae; v. 10 n. 2 (2019): Comunicata Scientiae; 319-324	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.title	Chlorophyll fluorescence as a tool to select salinity-tolerant cowpea genotypes	en-US
dc.title	Chlorophyll fluorescence as a tool to select salinity-tolerant cowpea genotypes	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion