Gas exchange in ‘BRS Princesa’ banana (Musa spp.) under partial rootzone drying irrigation in the north of Minas Gerais, Brazil
| Title: | Gas exchange in ‘BRS Princesa’ banana (Musa spp.) under partial rootzone drying irrigation in the north of Minas Gerais, Brazil |
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| Authors: | Marcelo Rocha dos Santos, Sérgio Luiz Rodrigues Donato, Alessandro de Magalhães Arantes, Eugênio Ferreira Coelho, Pollyanna Mara de Oliveira |
| Source: | Acta Agronómica, Vol 66, Iss 3, Pp 378-384 (2017) |
| Publisher Information: | Universidad Nacional de Colombia, 2017. |
| Publication Year: | 2017 |
| Collection: | LCC:Agriculture |
| Subject Terms: | Abiotic stress, irrigation techniques, photosynthetic rate, stomatal closure, vegetative growth, water deficit, Agriculture |
| More Details: | 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. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English Spanish; Castilian Portuguese |
| ISSN: | 0120-2812 2323-0118 |
| Relation: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/55056; https://doaj.org/toc/0120-2812; https://doaj.org/toc/2323-0118 |
| DOI: | 10.15446/acag.v66n3.55056 |
| Access URL: | https://doaj.org/article/1171303652264b6db9edab6f2679de8a |
| Accession Number: | edsdoj.1171303652264b6db9edab6f2679de8a |
| Database: | Directory of Open Access Journals |
| ISSN: | 01202812 23230118 |
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| DOI: | 10.15446/acag.v66n3.55056 |
| Published in: | Acta Agronómica |
| Language: | English Spanish; Castilian Portuguese |