Data/hora: 23/09/2024 19:44:01

Biblioteca(s): 	Embrapa Semiárido.	
Data corrente: 	06/10/2022	
Data da última atualização: 	13/01/2023	
Autoria: 	JARDIM, A. M. da R. F; SANTOS, H. R. B.; ALVES, H. K. M. N.; SILVA, S. L. F.; SOUZA, L. S. B. de; ARAÚJO JÚNIOR, G. do N.; SOUZA, M. de S.; ARAUJO, G. G. L. de; SOUZA, C. A. A. de; SILVA, T. G. F. da.	
Afiliação: 	ALEXANDRE MANIÇOBA DA ROSA FERRAZ JARDIM, UFRPE; HUGO RAFAEL BENTZEN SANTOS, Federal Rural University of Pernambuco, Serra Talhada, PE; HYGOR KRISTOPH MUNIZ NUNES ALVES, UFRPE; SERGIO LUIZ FERREIRA SILVA, Federal Rural University of Pernambuco, Serra Talhada, PE; LUCIANA SANDRA BASTOS DE SOUZA, Federal Rural University of Pernambuco, Serra Talhada, PE; GEORGE DO NASCIMENTO ARAÚJO JÚNIOR, UFRPE; MARCONDES DE SÁ SOUZA, UFRPE; GHERMAN GARCIA LEAL DE ARAUJO, CPATSA; CARLOS ANDRÉ ALVES DE SOUZA, UFRPE; THIERES GEORGE FREIRE DA SILVA, Federal Rural University of Pernambuco, Serra Talhada, PE.	
Título: 	Genotypic differences relative photochemical activity, inorganic and organic solutes and yield performance in clones of the forage cactus under semi-arid environment.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Plant Physiology and Biochemistry, v. 162, p. 421-430, 2021.	
DOI: 	https://doi.org/10.1016/j.plaphy.2021.03.011	
Idioma: 	Inglês	
Conteúdo: 	Plants with the crassulacean acid metabolism commonly present good adaptation to arid and semi-arid environments, but it highly depends on the type of species. In this study, chlorophyll fluorescence, the concentration of inorganic and organic solutes and the productive performance were evaluated along with their relationships in different clones of the genera Opuntia and Nopalea. The experiment was conducted from 2016 to 2018. Four clones of genus Opuntia were evaluated: ?Orelha de Elefante Mexicana? (OEM), ?Orelha de Elefante Africana? (OEA), V19 and F8; and two clones of genus Nopalea: ?IPA Sert?ania? and ?Miúda?. The experiment was arranged in a randomised block design, with six treatments and three replications. The following parameters were measured when harvesting: initial, maximum and variable fluorescence; the quantum yield of PSII (Fv/Fm); light-induction curves of the photochemical parameters (&#916;F/Fm?, qP, NPQ and ETR); the chlorophyll and carotenoid content; carbohydrates; the sodium (Na+) and potassium (K+) content; morphometry; and dry matter accumulation. The values for the effective quantum yield of PSII (&#916;F/Fm?) and the alterations in photochemical quenching were higher in the OEM clone (P < 0.05). There was a difference between clones for non-photochemical quenching, with the F8 clone having the highest values. The Fv/Fm was 0.87 for the OEM. ?IPA Sert?ania? obtained the greatest Chl a/b, and the highest values for carbohydrate concentration were found in the OEA clone. The OEM clone showed the greatest accumulation of K+, in addition to a higher cladode area index and greater dry matter accumulation. The results of this study show the high physiological tolerance of the forage cactus to a semi-arid environment, which varies according to the clone.	
Palavras-Chave: 	Nopalea; Semiárido.	
Thesagro: 	Características Agronômicas; Carboidrato; Clorofila; Palma Forrageira; Pastagem.	
Thesaurus Nal: 	Carbohydrates; Chlorophyll; Opuntia; Pastures.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Semiárido (CPATSA)	
Exemplares: 	CPATSA - (60095-1) - UPC - AP - DD -  -  -  - DIS