Euphorbia abyssinica latex promotes rooting of Boswellia cuttings |
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Authors: | Aklilu Negussie Raf Aerts Kindeya Gebrehiwot Els Prinsen and Bart Muys |
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Institution: | (1) Land Resources Management and Environmental Protection Department, Mekelle University, P.O. Box 231, Mekelle, Ethiopia;(2) Division Forest, Nature and Landscape, Katholieke Universiteit Leuven, Celestijnenlaan 200E-2411, 3001 Leuven, Belgium;(3) Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium |
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Abstract: | Traditional knowledge in northern Ethiopia points towards the root-stimulating properties of the latex found in Euphorbia abyssinica (EAG). Stem cuttings of EAG as well as cuttings of other species treated with EAG latex reportedly root easily in dry soil.
This could be attributable to endogenous auxins contained in the latex. We screened EAG latex for auxins and precursor molecules
using analytical LC-MS/MS, and tested the effect of EAG latex on the rooting of woody cuttings of Boswellia papyrifera, a threatened multipurpose tree. The EAG latex contained indole acetic acid (IAA) (0.06 μg/g latex), an auxin controlling
apical dominance and lateral rooting, as well as IAA metabolites and conjugates. Boswellia cuttings treated with EAG latex rooted significantly sooner and showed higher survival ratios than untreated controls. EAG
is widely available and its latex easy to obtain. Therefore it is a promising source of a natural plant growth regulator which
may be used for improving low technology vegetative propagation of woody species in East and Northeast Africa, including the
threatened Boswellia tree. |
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Keywords: | Auxins Ethiopia Indole acetic acid (IAA) Rooting response Traditional knowledge |
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