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| Title | Cutting Propagation of Rare Tree Species for Forest Restoration in Northern Thailand | | Author | Anantika Ratnamhin, Stephen Elliott and Prasit Wangpakapattanawong | | Year | 2010 | | Publisher | World Agroforestry Centre (ICRAF) Thailand | | City | Thailand | | Purpose | Science Forum 2010 | | Call Number | PO0271-10 |
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| Abstract: |
| Forest restoration programs require production of high quality planting stock of a wide range of indigenous forest tree species. Because many of these species have proved difficult to propagate from seed it is important to develop methods to produce planting stock by other means. The method examined in this study was vegetative propagation of cuttings. The objectives of the research were i) to develop and test cutting propagation techniques for tree species which are rare or threatened with extirpation from northern Thailand and which have been difficult to grown from seed and ii) to test the effects of different rooting hormone treatments on cutting performance, in terms of survival, vigour and rooting. Four rare tree species, Haldina cordifolia(Roxb.) Rids., Ilex umbellulata(Wall.) Loesn., Rothmania sootepensis(Craib) Brem., and Shoutenia glomerataKing ssp. peregrine(Craib) Roekm. & Hart. were investigated for their suitability for vegetative propagation. All cuttings were treated with various rooting hormones and placed in the same rooting media and propagator with approximately 30% sunlight. Only 9% of Shoutenia glomerataproduced roots. This species rooted most efficiently without any hormone treatment and produced the highest relative performance scores. Application of auxin did not enhance rooting in the other three tested species. Rooting in these species was difficult to achieve and, therefore, it is not possible to mass-produce quality planting stock in simple non-mist propagators. Further work is required to achieve good rooting rapidly by testing other propagation methods or other hormone treatments for species conservation and for forest restoration in northern Thailand. |
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GRP 1: Domestication, utilization andconservation ofsuperior agroforestry germplasm
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