Depletion of indole-3-acetic acid in malformed tissues of mango (Mangifera indica L.) and its alleviation.
Dhillon B. S., Zora Singh
Author Affiliation: Punjab Agricultural University, Ludhiana 141?004, India.
Acta Horticulturae : 371-374
Abstract : A 3-year study on malformation in mango revealed lower levels of endogenous IAA in malformed panicles at stages (I) fully swollen buds, (II) bud inception, (III) fully grown panicles prior to full bloom and (IV) fully grown panicles at full bloom, than in healthy ones. Likewise, the shoots bearing malformed panicles maintained lower levels of IAA compared with shoots bearing healthy panicles at all developmental stages. Spraying with catechol [pyrocatechol] at 1000 p.p.m. prior to flower bud differentiation (1st week of Oct.) significantly reduced malformation and improved yield. Treatment with gallic acid, salicylic acid and NAA also reduced malformation and improved yield.