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KMID : 0903619930340020160
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Journal of the Korean Society for Horticultural Science
1993 Volume.34 No. 2 p.160 ~ p.166
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Study on the Korean Native Stewartia (Stewartia koreana)
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Abstract
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The seed of Stewartia is extremely expensive and seeds can be sown immediately after in fall and well germinate in two years. Korean native stewartia has been well appreciated by the public for landscapes. However, it has remained unavailable due to difficulties in asexual propagation. The objectives of this study were the determination of effectiveness of various treatments for seed germination and the best time for softwood cuttings for suitable propagation of Stewartia koreana. The results obtained were as follows. Seeds are generally doubly dormant and should be collected before the capsules split in October. Stored seeds lose their viability quickly and should be placed in pretreatment immediately. After treatment of GA 3000 ppm for 24 hours under 25℃ incubator in dark condition, warm stratification for 3 months followed by cold stratification for 3 months satisfied the requirements for germination. The germination rate was 42%. Studies were conducted on effects of IBA concentration and the season of the softwood cuttings. Softwood cuttings with 3000 ppm IBA on June 12 resulted in best rooting of 90%. Rooting of cuttings taken in late July declined to 40% for softwood cuttings.
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KEYWORD
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