Articles

CARBOHYDRATE INVOLVEMENT IN ROOTING SUCCESS OF LEAFY CUTTINGS DEPENDING ON PHYSIOLOGICAL AGE OF STOCK PLANTS OF PRUNUS SUBHIRTELLA ‘AUTUMNALIS’

Article number
990_54
Pages
423 – 428
Language
English
Abstract
Physiological ageing of woody plants is a very important process in horti¬cultural practice.
Successful propagation depends strongly on juvenile stock plant material.
Although the process of ageing has been studied in detail for many decades, there are lots of aspects still open.
In this research the carbohydrate metabolism of leafy cuttings during the first three weeks (root outgrowth time) regarding stock plants of different physiological age has been studied.
The comparison of adult (over 40-year-old plants), semi-adult (5-year-old cutting plants) and juvenile cuttings (in vitro rejuvenilised stock plants) of ornamental cherry (Prunus subhirtella ‘Autumnalis’) showed that adult cuttings possessed a weaker rooting response on all severance dates compared with cuttings of both other physiological ages.
The adult cuttings contained at the time of severance lower concentrations of glucose and fructose.
Concentrations of both sugars decreased during the root formation in cuttings of all physiological ages.

Publication
Authors
G. Osterc, V. Schmitzer, F. Stampar
Keywords
adventitious root formation, glucose, fructose, juvenility, sucrose
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