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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2005.12
- 수록면
- 115 - 123 (9page)
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The effect of sodium hypochlorite treatment on the germination of cattail (Typha spp.) seeds was investigated in growth chambers maintained on a 14-h photoperiod with various temperatures and light intensities. Germination rates of seeds were, in general, enhanced by the increase of light intensity and temperature regardless of cattail species. Seeds of T. oreientalis had 4.3, 13.0 and 7.3% germination at temperatures of 20, 25 and 30℃, respectively, under light intensity of 7.5 ㎛ol·m^(-2)·s^(-1). T. angustata showed higher germination rate, thus, 10.7, 22.7 and 50.7% under same temperature and light environment. Under high light intensity of 79.5 ㎛ol·m^(-2)·s^(-1), the germination rates of T. oreintalis and T. angustata were 78.3% and 88.7% at 30℃, respectively. Scarification of seeds with NaOCl (4%, available chlorine) increased germination rate in both species, especially even at low temperature of 20℃. Germination speed was also enhanced by NaOCl treatment. High light intensity further increased the germination rate. When NaOCl treated seeds were sowed on the soil surface in plastic house, the seedling emergence was nearly 100%. Untreated seeds of T. oreintalis and T. angustata showed 40 and 50%, respectively, in germination under same condition. However, when the depth of soil covering was over 1.0 cm, seedling emergence was retarded more than 1 month. On the process of seedling development, emergence of mesocotyl occurred firstly and after than primary root and first leaf were developed on the end of elongated mesocotyl. These results suggest that the promotion of seed germination by NaOCl pretreament may be induced from the increase of light absorptivity as well as water permeability through scarifying and bleaching the seed coat.
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UCI(KEPA) : I410-ECN-0101-2019-523-000155007