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Content of other major phytohormones of white clover leaves in different sets. ABA content (a), CTK content (b), GA content (c), JA content (d) and SA content (e). Vertical columns represent Mean+/−std (n = 4). The same letter indicates no significant a difference and the different letters indicate significant difference (Fisher’s LSD, P < 0.05) in a pairwise comparison between sets at the same time
