Physiological changes in GA-deficient and GA-insensitive poplars under well-watered and drought conditions.

Means±SE are based on at least three biological replications. Well-watered and drought conditions were analyzed separately. Statistically significant differences were determined by one-way ANOVA followed by Tukey’s post-hoc test (Pa Drought measurements 5 weeks after withholding water.b Drought measurements 3 weeks after withholding water.