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Silicon as a salt stress mitigator in yellow passion fruit seedlings

2024; UNIVERSIDADE FEDERAL DE GOIÁS; Volume: 54; Linguagem: Inglês

10.1590/1983-40632024v5480305

1983-4063

Cristóvão Jacques de Sousa Almeida, Jussara Silva Dantas, Evandro Franklin de Mesquita, Caio da Silva Sousa, Vitória Carolina da Silva Soares, José Paulo Costa Diniz, Rennan Fernandes Pereira, Lays Lins, Virgínia de Fátima Bezerra Nogueira, Irinaldo Pereira da Silva Filho,

Growth and nutrition in plants

ABSTRACT In the Brazilian semi-arid region, the production of passion fruit seedlings often faces challenges such as irrigation with saline water. However, silicate fertilization stands out as an effective solution for mitigating the salinity effects. This study aimed to evaluate the use of silicon as a salt stress mitigator in yellow passion fruit seedlings, under greenhouse conditions. The experimental design was completely randomized, with six replications, in a 5 × 2 factorial scheme, referring to five silicon doses (0, 0.25, 0.50, 0.75 and 1.0 g plant-1) and two electrical conductivity levels of the irrigation water (1.2 and 3.5 dS m-1). Variables related to plant growth, biomass and physiology were analyzed. Silicon doses between 0.50 and 0.60 g plant-1 provided the best results for the passion fruit seedlings’ growth, water status and physiology, both under lower (1.2 dS m-1) and higher (3.5 dS m-1) salinity conditions. The silicon strengthened the plants and improved water absorption, mitigating the negative effects of salinity on the yellow passion fruit.