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Effects of Irradiation and Cold Storage on Rooting and Growth of Chrysanthemum Cuttings  

김진규 (한국원자력 연구소)
노설아 (한국원자력 연구소)
신해식 (한국원자력 연구소)
송희섭 (한국원자력 연구소)
최병진 (대구가톨릭대학교)
Publication Information
Korean Journal of Environmental Biology / v.20, no.4, 2002 , pp. 355-359 More about this Journal
Abstract
This study was carried out to investigate the combined effect of cold storage with irradiation on rooting of chrysanthemum cuttings. Each cutting was six cm in length with three real leaves. A set of Groups of the cuttings was irradiated with 0 to 70Gy of gamma-ray after four weeks of cold storage, while another groups were irradiated with the same doses and then stored at $4^\circ{C}$ for four weeks. Root and shoot growth were observed at 15 and 20 days after planting of the cuttings in a Plug tray. Accelerated root formation was observed in 30 Gy irradiated group, and root growth was also enhanced in 20 and 30 Gy irradiated groups 20 days after planting. In case of irradiation combined with pre-treatment of cold storage, survival rate of cuttings was the highest (80%) in 30 Gy irradiated group. The groups treated with irradiation first before cold storage were apparently better in root formation, among which 50 Gy irradiated group showed the highest rate of root growth.
Keywords
Irradiation; chrysanthemum cutting;
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