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Effect of Environmental Conditions and Chemical Treatments on Seed Germination of Astilbe koreana (Kom.) Nakai
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  • Journal title : Korean Journal of Plant Resources
  • Volume 29, Issue 2,  2016, pp.235-240
  • Publisher : The Plant Resources Society of Korea
  • DOI : 10.7732/kjpr.2016.29.2.235
 Title & Authors
Effect of Environmental Conditions and Chemical Treatments on Seed Germination of Astilbe koreana (Kom.) Nakai
Jang, Bo Kook; Cho, Ju Sung; Lee, Cheol Hee;
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Factors affecting germination of seeds in the forms of various environment and chemical compounds. The present study was aim to produced effective seed propagation method of Astilbe koreana (Kom.) Nakai which had expected high value for the cut flower, ornamental and pharmaceutical material. Seed width and length ranged 0.62, 2.22 ㎜, respectively, and weight of thousand seeds was 40.5 ㎎. As result of imbibition test, showed moisture content of fresh seed (2.57%) increased rapidly by water-soaking treatment under 24 hours, recording to maximum value of 29.8%, and expansion of the seed coat was observed. Seed germination was the best at 15℃ and light conditions (40.8%) among temperature and light conditions treated. Percent germination of seeds was improved under the low (15, 20℃) than high temperature (25, 30℃). In addition, the seed was not germinated at dark condition regardless of temperature. Seeds of A. koreana thus seemed that it had low temperature germinability conditions. To improve germination rate, seeds were submerged in various concentrations of growth regulators such as GA3 and kinetin, and minerals as KNO3 and KCl. As a results, KNO3 treatment, regardless of concentrations, promoted germination compared to control. Especially, percent of germination (77.8%), germination energy (96.1%), mean germination time (11.3 days) and T50 (6.5 days) were effectively improved by treatment of KNO3 20 mM.
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