Abstract
Ulmus glabra (Huds.) is a hardwood species valuated for it wood in Hyrcanian forest. Information on the vegetative propagation on this species is currently few. This study was conducted to evaluate the effects of a range of Indole-3butyric acid (IBA) concentration (1000, 2000, 4000, 6000 and 8000 p.p.m) in combination with two types of media (Perlite and Perlite + peat + sand). On the rooting capacity of Ulmus glabra (Huds.) hardwood and semi-hardwood cuttings. No rooting was observed on the cuttings of Ulmus glabra (Huds.) with control treatment (no IBA) in both types of cuttings. Whereas different rooting percentage were observed on the cuttings treated with IBA combined with two; types of media. The highest rooting percentage were 21.1% for hardwood and 71% for semi-hardwood cuttings when they were treated with IBA (8000 p.p.m) + mixed media. Among the hormones does the best rooting percentage was found at the treatment of 8000 p.p.m IBA. The results indicated that the combination of IBA with mixed media is highly effective in increasing rooting capacity when compare to the perlite. There were no significantly different in root count of cuttings between 8000 and 6000 p.p.m. IBA treatment.
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