earticle

영어

The Siberian elm (Ulmus pumila L.) is distributed in wide range of Northeast Asia. The species grow well in dried and cool temperature and found in mountain areas of mid or northern part of Korean peninsula. The bark of Siberian elm tree has been used as antibacterial medicine. Due to its ecological characteristics that affected by global warming, the distribution is getting narrow in Korea. In contrast, this is promising tree species in urban area and southern slope to protect soil erosion because the species require high intensity of sunlight and very tolerant to drought and cold, even grow well in poor soil. Light intensity and pretreatments were examined on seed germination of the species. Seeds germinated well when they were in dried condition rather than full of moisture or any plant growth regulators such as cytokinin (benzylaminopurin, BA), gibberellic acid (GA3) or auxin (indole-butyricacid,IBA). Germination was influenced by light quality. Seeds germinated well under the lights of LED (red:blue,2:1) than other lights. When morered lights were emitted on seeds, germination rate and germination energy decreased. Without any light sources, germination rate was higher than the fluorescent and LED (red:blue,4:1) which suggest red light inhibit the germination of the species. Seedlings have different phenotypic characters under different light quality. Leaves of seedlings grow nunder LED, they have high chlorophyll contents than fluorescent light.