Morphophysiology of yellow passion-fruit seedlings cultivated with macrophyte (Eichhornia Crassipes) under salt stress

  • Moisés Wilkson Nunes dos Santos Instituto de Engenharias e Desenvolvimento Sustentável. Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Rua José Franco de Oliveira, s/n, CEP: 62790-970, Redenção, CE, Brazil.
  • Geocleber Gomes de Sousa Instituto de Desenvolvimento Rural. Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Rua José Franco de Oliveira, s/n, CEP: 62790-970, Redenção, CE, Brazil.
  • Mirele Germano Pedrosa Instituto de Desenvolvimento Rural. Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Rua José Franco de Oliveira, s/n, CEP: 62790-970, Redenção, CE, Brazil.
  • Maria Vanessa Pires de Souza Departamento de Engenharia Agrícola. Universidade Federal do Ceará (UFC), Avenida Mister Hull, s/n, CEP: 60455-760, Fortaleza, CE, Brazil.
  • Henderson Castelo Sousa Departamento de Engenharia Agrícola. Universidade Federal do Ceará (UFC), Avenida Mister Hull, s/n, CEP: 60455-760, Fortaleza, CE, Brazil.
  • Marcio Henrique da Costa Freire Departamento de Engenharia Agrícola. Universidade Federal do Ceará (UFC), Avenida Mister Hull, s/n, CEP: 60455-760, Fortaleza, CE, Brazil.
  • Fernanda Schneider Instituto de Desenvolvimento Rural. Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Rua José Franco de Oliveira, s/n, CEP: 62790-970, Redenção, CE, Brazil.
  • Matias Neto Alves Ferreira Instituto de Ciências Exatas e da Natureza. Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Rua José Franco de Oliveira, s/n, CEP: 62790-970, Redenção, CE, Brazil.

Abstract

The use of aquatic macrophyte biomass could be a viable alternative for producing substrates. The objective was to evaluate the production of yellow passion fruit seedlings in different macrophyte-based substrates under salinity stress. The experiment was carried out at the Seedling Production Unit in Redenção, Ceará state. A completely randomized design was used, in a 2 × 5 factorial arrangement, with respect to two electrical conductivities of irrigation water (0.8 and 2.5 dS m-1) and five substrates (S1 = 54% soil + 29. 5% sand + 16% macrophyte; S2 = 34% soil + 33% sand + 33% macrophyte; S3 = 24% soil + 26.5% sand + 49.5% macrophyte; S4 = 20% soil + 14% sand + 66% macrophyte; and S5 = 10% soil + 7.5% sand + 85.5% macrophyte), with 10 replications. Salt stress negatively affected photosynthesis, transpiration, stomatal conductance and internal CO2 concentration of yellow passion-fruit seedlings. The use of S1 (54% soil + 29.5% sand + 16.5% macrophyte) was more efficient for plant height, leaf area, shoot dry mass, root dry mass, and total dry mass, while S5 (10% soil + 7.5% sand + 82.5% macrophyte) provided higher photosynthesis in yellow passion fruit seedlings. Substrate 1 (54% soil + 29.5% sand + 16.5% macrophyte) and S3 (24% soil + 26.5% sand + 49.5% macrophyte) alleviated salinity stress on Dickson quality index and stem diameter. The use of macrophytes has been shown to be beneficial in the production of passion fruit seedlings, with positive effects on development and gas exchange, and alleviation of salt stress.

Keywords: aquatic plant, Passiflora edulis, salinity, substrate.


Published
10/01/2025
Section
Papers