TY  - EJOU
AU  - Andrade, Rayane Amaral de 
AU  - Peixoto, Tayd Dayvison Custódio 
AU  - Neto, Miguel Ferreira 
AU  - Santos, Antônio Sávio dos 
AU  - Medeiros, Joyce Fernandes de 
AU  - Silva, Clara Araújo da 
AU  - Almeida, Mirna Candace Oliveira de 
AU  - Araújo, Kariolania Fortunato de Paiva 
AU  - Filho, Ricardo André Rodrigues 
AU  - Pereira, Kleane Targino Oliveira 
AU  - Souto, Antônio Gustavo de Luna 
AU  - Torres, Salvador Barros 
AU  - Sá, Francisco Vanies da Silva 

TI  - Tolerance of Traditional Maize Varieties (<i>Zea mays</i> L.) to Salt Stress
T2  - Phyton-International Journal of Experimental Botany

PY  - 
VL  - 
IS  - 
SN  - 1851-5657

AB  - Managing salinity in irrigation water is essential to ensure water supply for plants, especially in semi-arid regions, where the most readily available water often has high salt content. In this context, the tolerance of traditional maize varieties to salt stress was evaluated using morphological and biochemical parameters at the initial developmental stage. The experiment was conducted in a greenhouse, using polyethylene trays with 200 cells filled with inert coconut fiber-based substrate. The experimental design was completely randomized in a 15 × 2 factorial scheme, with four replicates and 50 seeds per plot, for a total of 120 experimental plots. The factors corresponded to 15 traditional maize varieties and two levels of irrigation water salinity (S1 = 0.5 dS m<sup>−1</sup> and S2 = 7.5 dS m<sup>−1</sup>). Emergence was evaluated from the first to the eighth day after sowing, while growth, phytomass, and biochemical analyses were performed on the eighth day. The results showed that irrigation with saline water affected the development of the native varieties, with growth and biomass accumulation of the aerial part and rootlets being the most impacted variables. The varieties V3—Grão do Sertão, V5—Alho Pipoca, V8—Jaboatão Areia, V6—Pontinha, and V14—Logradouro stood out for their greater tolerance to saline stress, showing reductions of less than 4% in biomass accumulation, maintaining high root dry mass, and high salinity tolerance indices (ITS > 97%). In contrast, V10—Sol da Manhã, V11—Índio, and V12—Jaboatão Remígio were the most sensitive, with significant reductions in SDM and TDM and ITS values close to 80%, in addition to greater impairment of initial growth.
KW  - Native varieties; morphology; biochemistry; salinity; semi-arid region

DO  - 10.32604/phyton.2026.081266