Full TGIF Record # 133989
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Web URL(s):http://img.kisti.re.kr/soc_img/society//tsk/JDHHBF/2005/v19n2/JDHHBF_2005_v19n2_115.pdf
    Last checked: 01/28/2013
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Publication Type:
i
Refereed
Author(s):Kim, Young-Ju; Heo, Jin-Ah; Hwang, Yong-Soo; Ku, Ja-Hyeong
Author Affiliation:Department of Horticulture, College of Agriculture and Life Sciences, Chungnam National University
Title:Effect of sodium hypochlorite pretreatmentm light intensity and depth of soil covering on germination of cattail(Typha spp.) seeds
Source:Korean Journal of Turfgrass Science. Vol. 19, No. 2, 2005, p. 115-123.
Publishing Information:Korea: Turfgrass Society of Korea
# of Pages:9
Keywords:TIC Keywords: Sodium hypochlorite; Light intensity; Soil depth; Typha latifolia; Establishment rate; Seed germination; Temperatures; Emergence; Pregermination; Scarification (Seed)
Abstract/Contents:"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. oreintalis had 4.3, 13.0, and 7.3% germination at temperatures of 20, 25, and 30°C respectively, under light intensity of 7.5 μmol•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 μmol•m-2•s-1, the germination rates of T. oreintalis and T. angustata were 78.3% and 88.7% at 30°C, respectively. Scarification of seeds with NaOCI (4%, available chlorine) increased germination rate in both species, especially even at low temperature of 20°C. Germination speed was also enhanced by NaOCI treatment. High light intensity further increased the germination rate. When NaCOI 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, 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 leafe were developed on the end of elongated mesocotyl. These results suggest that the promotion of seed germination by NaOCI pretreatment may be induced from the increase of light absorptivity as well as water permeability through scarifying and bleaching the seed coat."
Language:Korean
References:19
Note:Abstract appears in English
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kim, Y.-J., J.-A. Heo, Y.-S. Hwang, and J.-H. Ku. 2005. Effect of sodium hypochlorite pretreatmentm light intensity and depth of soil covering on germination of cattail(Typha spp.) seeds. (In Korean, with English abstract.) Korean Journal of Turfgrass Science. 19(2):p. 115-123.
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http://img.kisti.re.kr/soc_img/society//tsk/JDHHBF/2005/v19n2/JDHHBF_2005_v19n2_115.pdf
    Last checked: 01/28/2013
    Requires: PDF Reader
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