Fig. 2From: Regulation of endogenous hormone and miRNA in leaves of alfalfa (Medicago sativa L.) seedlings under drought stress by endogenous nitric oxideChanges of ABA, GA3, IAA, and SA contents in leaves of alfalfa seedlings. A ABA content, B GA3 content, C SA content, and D IAA contents of alfalfa in leaves. Different letters in the same treatment days indicated a significant difference (P < 0.05)Back to article page