Data/hora: 05/06/2024 07:20:21

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 10/11/2017
Data da última atualização: | 10/11/2017
Autoria: | SANTOS, M. R. dos; DONATO, S. L. R.; ARANTES, A. de M.; COELHO, E. F.; OLIVEIRA, P. M. de.
Afiliação: | MARCELO ROCHA DOS SANTOS, IF Baiano; SÉRGIO LUIZ RODRIGUES DONATO, IF Baiano; ALESSANDRO DE MAGALHÃES ARANTES, IF Baiano; EUGENIO FERREIRA COELHO, CNPMF; POLYANNA MARA DE OLIVEIRA, EPAMIG Norte.
Título: | Gas exchange in 'BRS Princesa' banana ( Musa spp.) under partial rootzone drying irrigation in the north of Minas Gerais, Brazil.
Ano de publicação: | 2017
Fonte/Imprenta: | Acta Agronómica, v. 66, n.3, p 378-384, 2017.
Idioma: | Inglês
Conteúdo: | This research aimed to evaluate physiological characteristics of ?BRS Princesa? banana under partial rootzone drying irrigation, PRD. The five treatments, 1 - 50% of reduction in water depth (WD) with a frequency alternation of irrigation side (FA) of seven days during the whole production cycle; 2 - 50% of WD and FA of 14 days in the cycle; 3 - 50% of WD and FA of 21 days; 4 - 50% of WD with a fixed irrigation (only one lateral line on one side of the plant); and 5 - full irrigation (two lateral lines with open shutoff valve) throughout the cycle, they were arranged in a randomized block design with five replicates. There is a reduction in photosynthetic rates and water use efficiency as a result of enzymatic impairment or stomatal closure, due to the increased of leaf temperature. The stomatal conductance - gs was lower in plants irrigated with 50% of ETc with fixed irrigation in one side of the plant. Even with water deficit in the soil, using the PRD with 50% of ETc, Photosynthesis - A Transpiration - E; Leaf temperature - Tleaf, internal concentration of CO2 - Ci; stomatal conductance - gs; photosynthetically active radiation - Qleaf; carboxylation efficiency - A/Ci; Quantum efficiency of Photosynthesis - A/Qleaf; and instantaneous water use efficiency ? WUE ?BRS Princesa? banana were similar among strategies, highlighting the possibility of use of the irrigation management technique with PRD, saving water, and no physiological changes in the plants.
Thesagro: | Banana.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (32023-1) - UPC - AP - DD - Publicação digital -  -  - DIS