Fig. 2From: Genome-wide transcriptional and physiological responses to drought stress in leaves and roots of two willow genotypesMeans for shoot height (a) and SPAD value (b) in genotype 592 and 520 assessed non-destructively during the experimental treatment period in April. The genotypes were grown in a growth chamber (three blocks) and exposed to two experimental conditions, i.e. well-watered (open symbols) and drought (closed symbols). Mean standard deviation (SD) across all treatments and genotypes is indicated in the lower left cornerBack to article page