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KMID : 1098420130210020007
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Korean Journal of Medicinal Crop Science
2013 Volume.21 No. 2 p.7 ~ p.19
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Effect of Priming and Seed Pellet Technique for Improved Germination and Growth in Fraxinus rhynchophylla and Alnus sibirica
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Park Hae-Il
Shim Hoon-Seob
Choi Li-Na
Jo Hyun-Kil
Han Seung-Ho
Lee Jae-Keun
Yu Chang-Yeon
Lim Jung-Dae
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Abstract
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This study was carried out to select new pelleting binder and material for seeds from Fraxinus rhynchophylla Hance and Alnus sibirica Fisch. ex Turcz. The optimum treatments of the various concentrations and species of priming agents to improve seed germination of both woody medicinal plants were also estimated. Germinability was increased when the seeds of Fraxinus rhynchophylla Hance was soaked in -1.0 MPa of PEG6000 solution at 15℃ for 4 days significantly, the optimum treatment for improving germination of Alnus sibirica Fisch. ex Turcz was observed when the tested seeds was soaked in 100 mM of KCl at 15℃ for 4 days. The influence of physical and chemical properties of pelleting solid materials, the mixture of gypsum, diatomaceous earth, dalma ceramic and vermicuolite (6:1:1:1 ratio) were found as the best pelleting materials for Fraxinus rhynchophylla Hance and Alnus sibirica Fisch. ex Turcz. seeds. To satisfy the requirements of absorption and compatibility for multi-layer seed pelleting, SGPA (Starch-grafted cross- inked polyacrylates) hydrogel was prepared using starch, acrylonitrile, ceric ammonium nitrate, nitric acid, methyl alcohol and potassium hydroxide. The resulting SGPA hydrogel showed high water absorption but not plant compatibility. It suggested that seed pelleting using pelleting materials and SGPA hydrogel (multi-layer coating) after priming agent treatment is to increase germinability and seedling growth and it can reduced irrigation labours and can also save seed.
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KEYWORD
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Seed Pellet, Hydrogel, Priming, Fraxinus rhynchophylla Hance, Alnus sibirica
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