Quality of yellow passion fruit seedlings under saline water irrigation and salicylic acid concentrations

• Autor(a) principal: Nobre, Reginaldo Gomes
• Data de Publicação: 2024
• Outros Autores: Araujo, Joseane Barbosa, Carvalho, Kaila Maria Pereira de, Bezerra, Idelfonso Leandro, Silva, Luderlândio de Andrade, Soares, Lauriane Almeida dos Anjos, Souza, Maria do Socorro Medeiros de, Rodrigues Filho, Ricardo André
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Caatinga
• Texto Completo: https://periodicos.ufersa.edu.br/caatinga/article/view/11879
• topic: Passifloraceas. Estresse salino. Fitormônio.; Passifloraceae. Salt stress. Phytohormone.

The objective of this study was to evaluate the quality of ‘BRS Gigante Amarelo’ passion fruit seedlings irrigated with brackish waters under salicylic acid application. The experiment was conducted under conditions of protected environment (screened) in the experimental area of the Federal Rural University of the Semi-arid Region (UFERSA), Multidisciplinary Campus of Caraúbas, RN, Brazil, in the period from August to November 2022, in a randomized block experimental design and analyzed in a 4 x 4 factorial scheme, with four replicates and one plant per plot, with treatments consisting of electrical conductivity of irrigation water - ECw (0.5, 1.4, 2.3 and 3.2 dS m-1) and concentrations of salicylic acid - SA (0.0, 1.5, 3.0, and 4.5 mM L-1). Electrical conductivity of irrigation water up to 3.2 dS m-1 does not affect the absolute growth, photosynthetic rate and quality of ‘BRS Gigante Amarelo’ passion fruit seedlings; ECw from the average value of 1.3 dS m-1 affects stomatal conductance, transpiration, internal CO2 concentration and root fresh and dry mass production. Foliar application of salicylic acid does not mitigate the effect of salt stress from irrigation water on the production of yellow passion fruit seedlings; however, the average concentration of 3.15 mM L-1 promotes greater absolute and relative growth, shoot fresh and dry mass and quality of seedlings. SA concentration of 1.5 mM L-1, associated with ECw of 1.0 dS m-1, is recommended for the production of “BRS Gigante Amarelo” passion fruit seedlings.