Propagation of Ornamental Plants
8(3): 133-137, 2008
THE ROLE AND SIGNIFICANCE OF POLYPHENOLS IN ADVENTITIOUS ROOTING IN PRUNUS REGARDING PHYSIOLOGICAL STATUS OF THE STOCK PLANTS
Gregor Osterc*, Mateja Štefančič, and Franci Štampar
University of Ljubljana, Biotechnical Faculty, Department of Agronomy, Institute for Fruit Growing, Viticulture and Vegetable Growing, 101 Jamnikarjeva str., 1000 Ljubljana, Slovenia, Fax: + 386 1 423 10 88, *E-mail: gregor.osterc@bf.uni-lj.si
Abstract
Differences in chlorogenic acid and rutin (quercetin-3-rutinoside) in different cutting parts (bases, stems and leaves) were observed immediately after severance in relation to the physiological stockplant status (mature, cutting, micropropagated) of ornamental cherry Prunus subhirtella 'Autumnalis'. The cuttings derived from the mature stockplants accumulated significantly lower concentrations of both substances during the first days after severance than the cuttings from the in vitro and cutting source. Moreover, the cuttings from the mature stockplants showed a rooting efficiency that was 32.3%, significantly worse than that for the cuttings of in vitro origin, with 76.7%. The cuttings harvested from cutting stockplants scored in the middle, with 56.7% rooting efficiency. The cutting stems contained the lowest concentrations of chlorogenic acid (up to 0.05 mg g-1 FW) and rutin (up to 0.06 mg g-1 FW), whereas the highest concentrations were measured in the cutting leaves, and, in the case of rutin, also in the cutting bases (up to 11 mg g-1 FW chlorogenic acid and 5.5 mg g-1 FW rutin).
Key words: chlorogenic acid, leafy cuttings, ontogeny, Prunus, rutin
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