The effect of benzyladenine and naphthalene acetic acid on rooting and subsequent growth of Portulaca umbraticola Kunth
Katarzyna Wróblewska, Przemysław B±belewski
Department of Horticulture
Wroclaw University of Environmental and Life Sciences
pl. Grunwaldzki 24 A, 50-363 Wrocław, Poland
Portulaca umbraticola Kunth stem cuttings were treated with BA or BA and NAA in different concentrations.
BA was applied by spraying or by the quick-dip method. Independent of application type, in almost all of the
treatments BA and BA applied with NAA increased the percentage of rooted cuttings, but had no effect on the
number of roots, apart from BA in the 0.5 g dm-3 concentration, which doubled the root number. Treatment with
BA alone resulted in more intensive axillary shoot development, although only in one concentration (0.2 g dm-3)
did BA significantly influence the number and length of lateral shoots. BA applied together with NAA had no
effect or inhibited lateral shoot development.
After measurement, rooted cuttings were planted in pots in order to assess subsequent plant growth. Our data
indicated that the positive effect of BA on shoot development disappeared during the subsequent cultivation of
the plants. BA alone applied by spraying did not influence the number and length of initial and secondary lateral
shoots, whereas BA applied with NAA negatively influenced the length of initial lateral shoots as well as the
number and length of secondary lateral shoots.
Wróblewska K., B±belewski P., 2010. The effect of
benzyladenine and naphthalene acetic acid on rooting and
subsequent growth of Portulaca umbraticola Kunth. Folia Horticulturae 22/2: