Abstract
Pre-sowing treatments are expected to increase seed germination. This evaluates response to pre-sowing treatments and the growth performance of two native and rare tree species, Garuga pinnata Roxb. and Vitex glabrata R. Br. The hard seed coats were treated by rubbing with sand paper, nail clipping, and immersion in water and acid (H2SO4). Results indicate that G. pinnata showed a 90% germination rate and 30% germination energy when seed coats were nicked with a nail clipper. Rubbing with sand paper was the best pre-sowing treatment for V. glabrata, resulting a 80% germination rate and 30% germination energy. G. pinnata and V. glabrata seedlings from seeds soaked 24 h in water resulted in maximum heights and collar diameters. These were significantly higher (at p < 0.05) than those of other treatments. The results indicate that scarification or nicking of seeds may have some negative impacts on seedling growth. Therefore, it is difficult to recommend a pre-sowing treatment of seeds for achieving both maximum germination and good early seedling growth.
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Acknowledgements
The authors acknowledge the support of Arannayk Foundation (Tropical Forest Conservation Foundation) as well as the Institute of Forestry and Environmental Sciences, Chittagong University during this research.
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Project funding: The research was funded by “Arannayk Foundation”.
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Corresponding editor: Zhu Hong.
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Hossain, M.A., Islam, K.S., Rajasree, N. et al. Pre-sowing treatments for improved germination and growth of two rare native species of Bangladesh. J. For. Res. 29, 1277–1282 (2018). https://doi.org/10.1007/s11676-017-0554-9
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DOI: https://doi.org/10.1007/s11676-017-0554-9