How does the combination of water and salinity stress effect the glowth of seedlings of Caatinga species?
DOI:
https://doi.org/10.33448/rsd-v15i5.51060Keywords:
Caatinga seedlings, Combined stresses, Growth.Abstract
Seedlings of Caatinga species are exposed to multiple stresses that can negatively impact their growth. Therefore, the objective of this study was to investigate the effects of different water regimes and salinity levels on the morphological dynamics and biomass accumulation of the species *Amburana cearensis* (Allemão) A.C. Smith, *Astronium urundeuva* (Allemão) Engl, and *Poincianella pyramidalis* (Tul.) L. P. Queiroz. The species were evaluated in a completely randomized design with four replications, considering the interaction between water levels (100%, 75%, and 50% of ET₀) and salinities (0.35, 3.1, 4.84, and 8.41 dS m⁻¹). The results indicated that the species were more sensitive to saline stress, which significantly compromised their growth and development. Furthermore, water deficit reduced height, number of leaves, and leaf dry biomass. The best performance was observed with a water depth of 100% of ET₀ in both species.
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Copyright (c) 2026 Marcia Nunes de Melo Santos, Tays Ferreira Barros, Márcia Bruna Marim de Moura, Luciana Sandra Bastos de Souza, Carlos André Alves de Souza, Alexandre Maniçoba da Rosa Ferraz Jardim
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