Salinity-tolerant dwarf cashew rootstock has better ionic homeostasis and morphophysiological performance of seedlings

ABSTRACT Considering the cashew tree’s relevance and limitations imposed by salinity stress in semi-arid regions, use of alternatives capable mitigating harmful effects due to is great importance production sector. The grafted plants, especially with rootstock made tolerant materials, influences accumulation toxic ions leaves seedlings. Thus, objective this work was evaluate morphophysiological characteristics leaf concentrations Na+, K+ Ca+2 combinations scion early dwarf cashew, contrasting terms tolerance. experiment carried out a completely randomized design five replicates, 4 × 3 factorial arrangement, corresponding four scion/rootstock (self-graft CCP 09, 09/CCP 76, self-graft 76/CCP 09) three NaCl (0, 50, 100 mM L-1). Height, number leaves, area, dry matter, tolerance index were evaluated after 30 days application concentrations. combination 76/09 showed 50 L-1, increase area leaves. more suitable, as it kept concentration had lowest Na+ concentration.