RIBEIRO, M.M.A. ; COLLADO, L.M. ; ANTUNES, A. (2008) - The influence of indol butyric-acid in Prunus laurocerasus L. vegetative propagation. In International Symposium on Woody Ornamentals of the Temperate Zone, 1, Pruhonice, 26-30 de Maio. Poster.
Title
The influence of indol butyric-acid in Prunus laurocerasus L. vegetative propagation
Cherry laurel is very common as an ornamental plant, due to the large glossy
leaves, fast growth, and shade and hedging tolerance. The influence of different indol-3-
butiric acid (IBA) concentrations (1,000, 2,500, 5,000 and 7,500 ppm) was evaluated in
early spring 2007. The data was gathered one month after bench cutting plantation. The
parameters measured and analyzed were the number of rooted cuttings, the number of
cuttings with callus formation and mortality, the mean number of roots (NR) and the
mean main root length (MRL), per rooted cutting. The IBA application influenced the
rooting percentage, the NR and the MRL, but the results were IBA concentration
independent. In P. laurocerasus rooting ranged from 67% and 80%, when IBA was
applied, values significantly superior to 37% of rooted cuttings in the control. The
highest NR and MRL values were found in the treatment with 7,500 ppm IBA (27.2 of
roots per cutting) and with 1,000 ppm IBA (MRL was 24.76 mm), respectively.
Significantly lower values were obtained in the control: 5.56 NR and 9.4 mm of MRL.
The IBA application significantly increased rooting, the NR and the MRL, with cuttings
planted early in Spring, but the parameters were IBA concentration independent.
