Effect of cutting position and indole butyric acid (auxin) concentration on rooting response of Araucaria heterophylla
Author(s) -
Tilahun Abera,
Manahlie Begashaw,
Getachew Abébé,
Negash Genet
Publication year - 2019
Publication title -
african journal of biotechnology
Language(s) - English
Resource type - Journals
ISSN - 1684-5315
DOI - 10.5897/ajb2018.16450
Subject(s) - auxin , araucaria , shoot , cutting , horticulture , vegetative reproduction , botany , butyric acid , biology , biochemistry , gene
The effects of cutting position (tip, middle and basal) and concentration of indole butyric acid (IBA) (0, 5, 7.5 and 11 g/L) on root and shoot growth of Araucaria heterophylla were evaluated to develop a method for vegetative propagation for this tree species. Leaf number, number of adventitious roots, root length and survival rates were measured. These parameters were significantly influenced by the interactive effect of cutting position and hormonal concentration. Tip cuttings with the11 g/L IBA treatment showed higher root number, leaf number and root length whereas the other treatment combinations showed no root or shoot growth. Further, plant death was observed for the 5 and 7.5 g/L IBA treatments. Key words: Araucaria heterophylla, cutting position, hormonal concentration, vegetative propagation.
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