EFEITOS DO ESTRESSE SALINO NA QUALIDADE DOS FRUTOS, BIOMETRIA E FISIOLOGIA DE P. EDULIS ENXERTADO EM ESPÉCIES DE PASSIFLORA SPP

• DOI: https://doi.org/10.22533/at.ed.835152512062

• Palavras-chave: Enxertia, Passiflora gibertii, Passiflora cincinnata, NaCl, trocas gasosas.

• Keywords: Grafting, Passiflora gibertii, Passiflora cincinnata, NaCl, gas exchange.

• Abstract: Grafting in passion fruit represents a promising strategy to adapt plants to environments with high salinity. This chapter discusses the effects of salt stress on fruit quality, biometric characteristics, and physiological responses of Passiflora edulis grafted onto different Passiflora spp. species. The study was conducted in a completely randomized design in a 3 × 2 factorial scheme, involving three species used as rootstocks (P. edulis, P. gibertii, and P. cincinnata), with P. edulis as the scion, under two salinity levels (0.5 dS m⁻¹ – control and 4.5 dS m⁻¹), with four replications per treatment. Biometric, physiological, and post-harvest evaluations were performed to analyze the interaction between rootstocks and the effects of salt stress. The results showed that salinity significantly affected variables such as leaf number, plant height, transpiration rate, photosynthesis, total chlorophyll content, and total water consumption in P. edulis grafted plants. The species P. edulis and P. gibertii stood out as promising rootstocks, maintaining stable plant height and leaf number under saline conditions. Furthermore, P. edulis self- grafted developed efficient salt tolerance mechanisms, demonstrating high potential for cultivation in saline environments.