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- Title
Foliar Applications of Salicylic Acid on Boosting Salt Stress Tolerance in Sour Passion Fruit in Two Cropping Cycles.
- Authors
Sobrinho, Thiago Galvão; da Silva, André Alisson Rodrigues; de Lima, Geovani Soares; de Lima, Vera Lúcia Antunes; Borges, Vitória Ediclécia; Nunes, Kheila Gomes; Soares, Lauriane Almeida dos Anjos; Saboya, Luciano Marcelo Fallé; Gheyi, Hans Raj; Gomes, Josivanda Palmeira; Fernandes, Pedro Dantas; de Azevedo, Carlos Alberto Vieira
- Abstract
Brazil stands out as the largest producer of sour passion fruit; however, the water available for irrigation is mostly saline, which can limit its cultivation. This study was carried out with the objective of evaluating the effects of salicylic acid in the induction of tolerance in sour passion fruit to salt stress. The assay was conducted in a protected environment, using a completely randomized design in a split-plot scheme, with the levels of electrical conductivity of the irrigation water (0.8, 1.6, 2.4, 3.2, and 4.0 dS m−1) considering the plots and concentrations of salicylic acid (0, 1.2, 2.4, and 3.6 mM) the subplots, with three replications. The physiological indices, production components, and postharvest quality of sour passion fruit were negatively affected by the increase in the electrical conductivity of irrigation water, and the effects of salt stress were intensified in the second cycle. In the first cycle, the foliar application of salicylic acid at concentrations between 1.0 and 1.4 mM partially reduced the harmful effects of salt stress on the relative water content of leaves, electrolyte leakage, gas exchange, and synthesis of photosynthetic pigments, in addition to promoting an increase in the yield and quality parameters of sour passion fruit.
- Subjects
BRAZIL; SALICYLIC acid; PASSION fruit; IRRIGATION water; ELECTRIC conductivity; PHOTOSYNTHETIC pigments; SALT
- Publication
Plants (2223-7747), 2023, Vol 12, Issue 10, p2023
- ISSN
2223-7747
- Publication type
Article
- DOI
10.3390/plants12102023