Influence du déficit hydrique sur la réponse physiologique du cotonnier

Physiological response of cotton (Gossypium hirsutum L.) genotype R405-2000 at the youthful stage to water deficit induced by polyethylene glycol The effect of water stress induced by polyethylene glycol (PEG) has been studied on germination and seedling growth of cotton. Five different concentrations of PEG have been tested and the results showed that PEG concentrations negatively influence seeds germination. The length of roots and stems decreases with high concentrations of PEG in medium culture. The growth of leaves is inhibited from 15 g/L of PEG in medium culture. Aerial parts have been more affected by water stress than the roots. Plantlet whithering is observed from 35 g/L of PEG in medium culture.