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Effect of hormone treatments on Cel3 mRNA abundance. (A) Etiolated hypocotyl segments incubated for 24 h in solutions of IAA, 10 μM GA3, or 10 μM GA4+7. (B) Young etiolated seedlings exposed to air or 10 μl/l ethylene for 24 h. (C) Abscission zones of flower explants treated with air or 10 μl/l ethylene, then nonabscised (Ab−) and abscised (Ab+) zones were collected separately.
