Inderscience Publishers

Gibberellins (GA3) and benzylaminopurine (BAP) affect differently the postharvest life of Calathea zebrina and Hosta sieboldiana

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Effects of gibberellic acid (GA3) and/or benzylaminopurine (BAP) either as an immersion (10 min) or a pulse (24 h), with GA3 (0.10, 0.25 mM), BAP (0.10, 0.25 mM) alone or combination of GA3 and BAP (0.10 mM + 0.10 mM or 0.25 mM + 0.25 mM) on the postharvest life of cut leaves of Calathea zebrina and Hosta sieboldiana were investigated. A pulse treatment with 0.10 mM GA3 + 0.10 mM BAP was the most effective treatment (58 days, 9.6–fold increase) for C. zebrina while an immersion for 10 min in 0.25 mM GA3 treatments was the best for H. sieboldiana (26.5 days, four–fold increase). Results suggest that GA3and BAP prolong the postharvest life of cut leaves of C. zebriana and H. sieboldiana by preventing chlorophyll degradation and delaying leaf senescence.

Keywords: benzylaminopurine, BAP, Calathea zebrina, zebra plant, gibberellic acid, Hosta sieboldiana, postharvest life, gibberellins, GA3, immersions, cut leaves, pulse treatment, chlorophyll degradation, leaf senescence, postharvest technology, innovation

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