Fig. 3.

ABA content and relative expression of the downstream ABA-responsive protein gene (ABR) for two M. truncatula genotypes grown under well-watered (water) or drought conditions with and without pea aphid infestation. Each value represents the mean (±SE) of four replicates. Different lower case letters indicate significant differences among the combinations of aphid treatment and water treatment within the same genotype. Different upper case letters indicate significant differences between genotypes within the same water treatment and aphid treatment as determined by Tukey’s multiple range test at P<0.05.