PRE-TREATMENTS OF STOCK PLANTS WITH DIFFERENT GROWTH REGULATING CHEMICALS TO INDUCE ROOTING ON MANGO CUTTINGS

M.K. Sandhu
The effect of pre-treatment of stock plants with GA3, Cycocel, CEPA or Cycocel + CEPA on rooting of mango cuttings has been investigated.

Cutting taken from GA3-treated stock plants showed poor rooting even after subsequent treatment with auxins. On the other hand, Cycocel, CEPA or Cycocel + CEPA-pre-treated cuttings showed significant increase in rooting over control. Rooting was further enhanced when auxins were applied to the bases of pre-treated cuttings. The effect of IBA and NAA was most pronounced. A time-gap of 7 days between spraying and taking of cuttings gave better rooting than a gap of 3 days.

Increased rooting on cutting taken from pre-treated shoots seemed to be associated with higher levels of carbohydrates, phenols and root promoting substances. Apart from abscisic acid, three monophenols viz. p-hydroxybenzoic acid, p-coumaric acid and ferulic acid were detected in the stem extracts of mango.

Sandhu, M.K. (1992). PRE-TREATMENTS OF STOCK PLANTS WITH DIFFERENT GROWTH REGULATING CHEMICALS TO INDUCE ROOTING ON MANGO CUTTINGS. Acta Hortic. 321, 356-365
DOI: 10.17660/ActaHortic.1992.321.38
https://doi.org/10.17660/ActaHortic.1992.321.38

Acta Horticulturae