Ethylene in floral malformation in mango (Mangifera indica L.) cv. Amrapali

Studies were conducted to find out the association of different types of bud and ethylene production in shoot with expression of floral malformation in mango (Mangifera indica L.) cv. Amrapali. Shoot bearing simple (solitary apical) and multiple (apical and axillary buds with several protuberances at their base) buds were selected for this study. Data on the ethylene evolution from bud, stem, leaf and panicle and malformation incidence on those shoots revealed that multiple buds produced very high proportion of malformation (67.81%, 96.42%) than the simple buds (13.68, 4.89%) in 1993 and 1994 respectively. Similarly, the malformed panicle developed from multiple buds released more ethylene content (0.0235 μl g⁻¹ h⁻¹) compared to normal panicle developed from simple bud (0.0160 μl g⁻¹h⁻¹). Ethylene evolution was also more (0.0177 μl g⁻¹h⁻¹)in multiple buds than that in simple buds (0.0143 μl g⁻¹h⁻¹).