Abstract
Exogenous Application of Gibberellic Acid on Lateral Bud Development in Pineapple Propagated through Stem Cuttings
Highlights
Gibberellic acids are endogenous phytohormones that are involved in the regulation of the life cycle of plants, including seed germination, leaf expansion, stem elongation, floral induction, and fruit maturation [1]
GA3-treated pineapple stem sections began to rot after 1 week after treatment (WAT) (Figure 6b)
Lateral bud formation in pineapple stem is prevented at one week after treatment with GA3
Summary
Gibberellic acids are endogenous phytohormones that are involved in the regulation of the life cycle of plants, including seed germination, leaf expansion, stem elongation, floral induction, and fruit maturation [1]. Et al [2] studied the effect of gibberellic acid in combination with immersion system on the growth and acclimatization of micro propagated pineapple. Based on their results, growth of micro propagated pineapple was better in MS culture medium without GA3. The effects of the levels of GA3 in combination with other phytohormones were studied during inflorescence induction and development in ‘Smooth Cayenne’ pineapple by Sheng-hui, et al [3]. There results indicated that low levels of IAA, GA3, and zeatin and high levels of ethylene, ABA and 2-iP facilitated inflorescence initiation. High levels of IAA, GA3 and zeatin and low levels of ethylene and ABA facilitated inflorescence development. GA3 promotes fruit development in the transverse than in the longitudinal direction of pineapple fruit and increase vitamin C content [4]
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