Articles
STUDIES ON ROOTING COFACTORS IN LILAC /SYRINGA VULGARIS L./ CUTTINGS
Article number
91_61
Pages
501 – 506
Language
Abstract
Using biotests studies were conducted in order to explain differences in rootability between cuttings of lilacs.
On the basis of the results obtained the following conclusions are drawn: a/ after flowering and during dormancy of lilacs the levels of rooting promoters decrease and the levels of inhibitors increase, b/ the intensity of rooting of cuttings from various varieties is to a large extent correlated with the activity of inhibitors and promoters of rooting present in them.
Treating cuttings with alpha-naphtylacetic acid /NAA/ has caused a general lowering of the level of phenolics in the whole cuttings and in their various parts /leaves shoots, buds/. Cuttings of easily rooting varieties were characterized by higher content of ortho-dihydroxyphenols and lower content of monohydroxyphenols than was the case in cuttings of varieties difficult to root.
On the basis of the results obtained the following conclusions are drawn: a/ after flowering and during dormancy of lilacs the levels of rooting promoters decrease and the levels of inhibitors increase, b/ the intensity of rooting of cuttings from various varieties is to a large extent correlated with the activity of inhibitors and promoters of rooting present in them.
Treating cuttings with alpha-naphtylacetic acid /NAA/ has caused a general lowering of the level of phenolics in the whole cuttings and in their various parts /leaves shoots, buds/. Cuttings of easily rooting varieties were characterized by higher content of ortho-dihydroxyphenols and lower content of monohydroxyphenols than was the case in cuttings of varieties difficult to root.
Publication
Authors
K. Bojarczuk
Keywords
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