During the life cycle, plants are exposed to various abiotic and biotic stress
factors that adversely affect their growth, development and productivity. Drought
is one of the stress factors affecting the decline in plant growth and productivity
worldwide. In this study, the effect of water deficiency caused by different
concentrations of mannitol (5%, 10%, and 20%) on the germination of seeds of
two varieties of peas (Petit Provencal and Joff) was studied. The results of the
study showed that the germination percentage and germination potential of both
pea varieties decreased with increasing mannitol concentration compared to the
control. The Petit Provencal variety had a higher percentage of germination,
germination potential and vigor index of drought resistance and this variety was
considered more tolerant to drought stress.