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休眼前 尿素處理·IAA 處理 및 地下莖의 長短이 Zoysia japonica Steud. 의 榮養繁殖에 미치는 影響
柳達永,廉道義 서울대학교 1968 서울대학교 論文集 Vol.19 No.-
A series of experiments was conducted to determine the effect of pre-wintering application of urea, length of sprig, and IAA treatment, on vegetative propagation of Zoysia japonica. Urea was applied at soil and faliage in Oct. 10, 1966. Rhizome was transplanted with different lengths of 5, 10, 15cm per sprig, and different IAA concentration of 0, 50, 100, 150 ppm. The results are summarized as follows. 1) In case of pre-wintering application of urea, the nitrogen contents of rhizome was increased. 2) There was high increase of length of rhizome and total fresh matter weight at the transplanted area, because of the effect of pre-wintering application of urea. 3) Length of rhizome and total fresh matter weight was much more increased at longer sprig plot than at short sprig plot. 4) The growth of rhizome at transplanted area was increased by IAA treatment.
光波長, 照度, 光處理期間 및 GIBBERELLIN 處理가 Zoysia japonica 種子 發芽에 미치는 影響
柳達永,許文會,廉道義 서울대학교 1968 서울대학교 論文集 Vol.19 No.-
A series of experiments was contucted in 1967 to investigate the effect of wave length of light, light intensity, duration of light treatment, and gibberellin on the germination of Zoysia japonica seeds. The wave length of light was controlled by using the color cellophane paper under the natural sun light condition. And under the fluorescent lamps the wave length fo light was combined with light intensities and durations of light treatment. To clearify the accurate effect of wave length, light intensity, duration of light treatment, and gibberellin, the light intensity which infiltrated through color cellophane paper was adjusted to 1,000 lux. The results are summarized as follows. 1) The gemination percentage was remarkably higher under the colorless and red cellophane paper than that of the blue or green cellophane paper. 2) The germination percentage was increased highly under the natural condition where the light intensity was more than 30,000 lux, but it was very low under 1,000 lux or 500 lux 3) Germination percentage was increased in prolonged light treatment and under the strong light intensity. 4) Gibberellin increased, more or less, the germination percentage, but it could not substitute the effect of light or stratification.