[Show abstract][Hide abstract] ABSTRACT: The UE-imposed restrictions on the manufacture and use of plant protection chemicals impose on the nurseryman the need to screen for new substances that are environmentally friendly and yet effective in the production of plant material. Biopreparations may constitute such a group as they contain substances that have little environmental impact. This study evaluated biopreparation AlgaminoPlant for its effect on rooting of stem cuttings in Physocarpus opulifolius 'Dart's Gold' and 'Red Baron' during the vegetative seasons 2010 and 2011. During rooting, cuttings were sprayed once, twice or three times with the water solutions of the biopreparation AlgaminoPlant (0.2%). To evaluate its effectiveness relative to the current treatments routinely used in the nursery production, some cuttings were treated with a rooting powder containing a synthetic auxin IBA or sprayed with a water solution of IBA. The best results were obtained with the IBA solution, however, biopreparation also positively affected rhizogenesis in ninebark. Biopreparation also affected the chlorophyll a+b, reducing sugars, free amino acids and polypheno-lic acids contents in leaves of cuttings but its effects varied depending on a cultivar.
[Show abstract][Hide abstract] ABSTRACT: The effect of biopreparations on the rooting of stem cuttings in Cotinus coggygria ‘Young Lady’. The EU-imposed restrictions on the use of plant protection chemicals require the nurseryman to screen for new substances that are environmentally friendly and yet effective in the production of plant material. Biopreparations may constitute such a group, as they contain substances that have little environmental impact. The aim of this study was to evaluate the effect of AlgaminoPlant (0.2%), HumiPlant (0.2%) and Route (0.1%) on rhizogenesis in stem cuttings of smoke bush. Cuttings harvested from stock
plants were treated with the preparations mentioned above. After ten weeks their root system was compared to that of the control, untreated cuttings and to those treated with synthetic auxin IBA applied either by spraying in an aqueous solution (200 mg·dm–3) or as the commercial rooting powder Rhizopon AA (2%). All three biopreparations positively affected rooting in smoke bush cuttings. The effects of treatments with biopreparations on contents of chlorophyll a+b, free amino acids and reducing sugars in the leaves of cuttings were not unequivocal and no relationship could be established between their changes and rhizogenesis. The treatment with Route which resulted in an elevated polyphenolic acid content in cuttings positively affected their rhizogenesis. Spraying cuttings of smoke bush with solutions of the preparations tested can replace treatments
with synthetic auxin and may therefore be recommended for commercial practice.
[Show abstract][Hide abstract] ABSTRACT: In order to improve vegetative propagation of Berberis thunbergii ‘Red Rocket’, stock plants were subjected to shading and IBA treatment, as well as to the application of two commercially
available rooting powders. Spraying stock plants with IBA 24 hours prior to cutting harvest gave the effect comparable to
the use of rooting powders. Reduction of light intensity by 50% and 96% of ambient prior to harvest of cuttings improved rooting.
Positive effect of shading results in changes in shoot anatomy, i.e. a weaker sclerenchyma development. Enhanced rooting in cuttings from shoots grown under reduced light intensity was accompanied
by a decrease in the concentration of soluble proteins and by an increase in total chlorophyll content while the concentration
of total soluble sugars remained unaffected.
Acta Physiologiae Plantarum 03/2006; 28(6):567-575. DOI:10.1007/s11738-006-0052-8 · 1.52 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: references Bukovač M. J. (1972). Foliar penetration of plant growth substances with special reference to fruit trees. Acta Horticulturae, 34: 69-77. Caesar J. C. (1990). Effect of simulated shade-light quality on stem anatomy of Pinus contorta seedlings. IAWA-Bulletin, 11 (2): 120.. Etiolation as a tool for rooting cuttings of difficult-to-root woody plants.. Stem growth and epicormic branch formation in understorey beech trees (Fagus sylvatica L.). Annals of Botany, 87: 373-750. Pacholczak A., Szydło W., Łukaszewska A. (2005a). Effectiveness of foliar auxin application to stock plants in rooting of stem cuttings of ornamental shrubs. Propagation of Ornamental Plants, 5 (2): 100-106. Pacholczak A., Szydło W., Łukaszewska A. (2005b). The effect of etiolation and shading of stock plants on rhizo-genesis in stem cuttings of Cotinus coggygria. Acta Physiologiae Plantarum, 27 (4A): 317-328.
[Show abstract][Hide abstract] ABSTRACT: In order to improve vegetative propagation of a difficult to root Cotinus coggygria the stock plants were subjected to: etiolation, shading and spraying with IBA, combined with the application of two commercially
available rooting powders. The IBA treatment was more suitable for rooting of C. coggygria cuttings than the NAA application and it enhanced rhizogenesis regardless of the form of auxin application (foliar application
to a stock plant or a rooting powder used directly on cuttings) and the amount of light provided to stock plants. Etiolation
did not improve rhizogenesis in stem cuttings, however, reduction of light intensity by 50% and 96% of the ambient prior to
harvest of cuttings affected rooting positively. Positive effects of shading can be ascribed to changes in shoot anatomy,
i.e. a weaker sclerenchyma development. Synergistic effect of shading and foliar auxin application can result from the increase
in leaf blade area and/or thinner lower epiderm. Enhanced rooting in cuttings from shoots grown out under reduced light intensity
was accompanied by decrease in the contents of total soluble sugars, soluble proteins and free ABA and by increase in total
chlorophyll, free amino acids, polyphenolic acids and free IAA contents.
Acta Physiologiae Plantarum 12/2005; 27(4):417-428. DOI:10.1007/s11738-005-0046-y · 1.52 Impact Factor