Abstract

Salinity is one of the most common abiotic factors in the world and which strongly limits crop yields. Germination under salt stress could be a quick test to look for salt-tolerant plants. Our study was carried out on the seeds of okra (Abelmoschus esculentus L.), a mallow native to East Africa, known for its fruit used as a vegetable, rich in vitamin C and calcium. The objective of this experiment is to study the effect of salt stress on germination using NaCl at different concentrations. The seeds are germinated at a temperature of 25°C. The results obtained show that the first sprouts appear from the second day after planting seeds for the controls as for stressed seeds salinity; changing germination accelerates with decreasing salt concentration. By cons, salinity does not affect the final rate of germination but rather influences the duration of the germination by lengthening when the medium of the salt concentration increases.

Key words: Abelmoschus esculentus L., tolerance, germination, salt stress, glycophytes.