| Journal: | Acta scientiarum. Agronomy |
| Database: | PERIÓDICA |
| System number: | 000459818 |
| ISSN: | 1679-9275 |
| Authors: | Maia-Júnior, Sebastião de Oliveira1 Andrade, Jailma Ribeiro de1 Nascimento, Ronaldo do2 Lima, Robson Felipe de2 Bezerra, Carlos Vailan de Castro2 Ferreira, Vilma Marques3 |
| Institutions: | 1Universidade Estadual do Maranhao, Departamento de Zootecnia, Sao Luis, Maranhao. Brasil 2Universidade Federal de Campina Grande, Unidade Academica de Engenharia Agricola, Campina Grande, Paraiba. Brasil 3Universidade Federal de Alagoas, Centro de Engenharias e Ciencias Agrarias, Rio Largo, Alagoas. Brasil |
| Year: | 2022 |
| Volumen: | 44 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | Salinity is one of the environmental stresses that most cause losses in agricultural systems, including tomato production. Brassinosteroids, such as epibrassinolide (EBL), have multiple actions in essential processes in plants. Thus, the objective of this study was to evaluate the contributions of EBL to the growth, physiology, and production of tomato plants under salinity. The experiment was conducted in a factorial scheme, with five levels of water salinity (0.5 [the control], 1.5, 3.0, 4.5, and 6.0 dS m-1) and two concentrations of EBL (0 and 10-6 M). Salt stress reduced tomato growth, relative water content, membrane integrity, gas exchange, and fruit production. However, the exogenous application of EBL attenuated the adverse effects, partially improving these characteristics at all salinity levels. EBL reduced electrolyte leakage and increased membrane integrity and relative water content in control and stressed plants. Additionally, it increased the content of photosynthetic pigments, stomatal conductance, transpiration, and photosynthesis, which led to higher leaf dry mass production, fruit transverse diameter, and production per plant. Therefore, our results confirmed that foliar application of EBL improved the characteristics of stressed and non-stressed tomato plants |
| Disciplines: | Agrociencias, Biología |
| Keyword: | Hortalizas, Fisiología vegetal, Jitomate, Estrés salino, Tolerancia a la salinidad |
| Keyword: | Vegetables, Plant physiology, Plant physiology, Lycopersicon esculentum, Tomato, Salt stress, Salinity tolerance, Water stress |
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