Conditions for rooting of leafy cuttings of Alnus incana [light, indolebutyric acid, softwood, vegetative propagation]
1980
Huss-Danell, K. | Eliasson, L. | Oehberg, I. (Umeaa Univ. (Sweden). Dept. of Plant Physiology)
The rooting of sofwood cuttings of Alnus incana (L.) Moench in nutrient solution was studied under controlled conditions. Cuttings consisting of one internode with the leaf and axillary bud attached rooted easily and more rapidly than shoot tip cuttings. Light was necessary for rooting but good rooting was obtained in photon flux densities of both 40 and 190 mu-mol m('2)s('-1). Root number and root length was reduced when light reached the base of the cuttings. Treatment with indolebutyric acid (10('-6)-10('-4) M) increased the number of roots but 10('-4) M delayed rooting and decreased the root length. Debudded internode cuttings rooted as well as intact cuttings, and detached leaves also contained sufficient substances for rooting.
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