The effect of etiolation and shading of stock plants on rhizogenesis in stem cuttings of Cotinus coggygria

• Autorzy: Pacholczak A , Szydlo W. , Lukaszewska A.
• Języki publikacji: EN

Abstrakty

EN

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 rhizot genesis 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 Miar auxin application can result from the increase in leaf blade area and/or thinner lower epiderm. Em hanced 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.

Słowa kluczowe

EN

plant physiology; rooting; rhizogenesis; shading; stem; etiolation; ornamental plant; cutting; Cotinus coggygria; stock plant

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2005
• Tom: 27
• Numer: 4A
• Opis fizyczny: p.417-428,fig.,ref.

Twórcy

autor

Pacholczak A

• Warsaw Agricultural University, Nowoursynowska 159, 02-787 Warsaw, Poland

autor

Szydlo W.

autor

Lukaszewska A.

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