The Impact of Seasonal Changes in Plant Tissue on Rhizogenesis of Stem Cuttings of Once Blooming Roses

  • Marta Joanna MONDER Polish Academy of Science Botanical Garden - Center for Biological Diversity Conservation in Powsin, Prawdziwka 2, 02-973 Warsaw
  • Konrad WOLIŃSKI Polish Academy of Science Botanical Garden - Center for Biological Diversity Conservation in Powsin, Prawdziwka 2, 02-973 Warsaw
  • Maciej NIEDZIELSKI Polish Academy of Science Botanical Garden - Center for Biological Diversity Conservation in Powsin, Prawdziwka 2, 02-973 Warsaw
  • Andrzej PACHOLCZAK Warsaw University of Life Science, Department of Ornamental Plants, Nowoursynowska 159, 02-776 Warsaw, Poland

Abstract

The majority of old and long-to-root roses are enough frost resistant to grow on their own roots in moderate and cool
climates. The most often used method of rose propagation are single node stem cuttings derived from blooming shoots. The
long duration of rhizogenesis exposes cuttings to stress conditions and precocious ageing processes, which result in a low
rooting percentage. It was hypothesized that in the short season of flowering the amount of nutrients in shoots of stock plants
changes, thus affecting the process of rhizogenesis, as well as a condition of rooted cuttings, which may be estimated by the
contents of the biologically active components. The shoots of four rose cultivars were cut in four phenological stages: flower
buds closed, flowers opened, just after petal shedding and 7-14 days after petal fall. The rooting percentage were counted after
10 weeks of rooting. The evaluation of plant material were carried out before and after rooting, including: soluble proteins,
chlorophyll a and b, carotenoids, polyphenolic acids, reducing and total soluble carbohydrates. The research revealed
variability, characteristic for each examined cultivar, in the contents of the biologically active compounds, both before and after
rooting, in cuttings harvested from stock plants in successive phases of development. Decrease in pigment contents in leaves of
rooted cuttings may suggest a progressing senescence, both during propagation and later in a vegetative season. The cuttings of
‘Mousseuse Rouge’ rooted similarly when harvested in each of the phenological phases (53.8-67.5%). For other cultivars the
highest rooting percentage was obtained for cuttings harvested from shoots with closed flower buds: (‘Hurdals’ 47.5%,
‘Maiden’s Blush’ 55.0%, ‘Semiplena’ 67.5%). In these cultivars a relationship between rooting percentage and changes in the
contents of pigments, sugars or/and polyphenolic acids in successive phenological phases was shown.

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Published
2016-06-14
How to Cite
MONDER, M. J., WOLIŃSKI, K., NIEDZIELSKI, M., & PACHOLCZAK, A. (2016). The Impact of Seasonal Changes in Plant Tissue on Rhizogenesis of Stem Cuttings of Once Blooming Roses. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 44(1), 92-99. https://doi.org/10.15835/nbha44110244
Section
Research Articles