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      • KCI등재

        자작나무 콘테이너묘의 경화단계 생장에 미치는 UV-B 와 수분스트레스의 효과

        김종진,홍성각 ( Jong Jin Kim,Sung Gak Hong ) 한국산림과학회 1998 한국산림과학회지 Vol.87 No.4

        This study was carried out to investigate the possibility of supplemental UV-B application to the hardening phase of container-grown Betula platyphylla seedlings. The containerized seedlings were grown in a growth chamber for four months and then treated with UV-B(UV-B_(BE) 3.2KJ m^(-2) day^(-1) and 5.2KJ m^(-2) day^(-1)) radiation and water stress regime(irrigation in one week interval) for four weeks. The differences in growth and physiological responses of the seedlings before and after the treatments were analyzed. UV-B radiation and water stress reduced height growth and leaf dry mass accumulation of the seedlings. The root collar diameter growth was reduced by UV-B radiation but increased by water stress. The reduction in leaf dry weight by UV-B radiation and water stress reduced T/R ratio of the seedling. The reduction in T/R ratio was the most apparent by water stress. Chlorophyll index observed by a chlorophyll meter was the lowest in the 5.2KJ m^(-2) day^(-1) of UV-B radiation, and those in the 3.2KJ m^(-2) day^(-1) and water stress were similar. UV-B radiation and water stress reduced both water content in the seedlings and leaf water potential, and increased leaf osmatic pressure. The water content of leaves and shoots was reduced more rapidly by UV-B radiation than by water stress treatment. In conclusion, growth responses and physiological changes in water relation by supplemental UV-B radiation which was applied to the hardening phase of container-grown Betula platyphylla seedlings were similar results to the water stress treatment.

      • KCI등재

        층층나무 자엽단계 유묘의 생장과 한계광도에 관한 연구

        조재형,홍성각,김종진 ( Jae Hyoung Cho,Sung Gak Hong,Jong Jin Kim ) 한국산림과학회 1998 한국산림과학회지 Vol.87 No.3

        To investigate the effects of light intensity on the growth, and the critical minimum light intensity for growing of Cornus controversa seedlings at the stage of cotyledon, hypocotyl elongation, cotyledon expansion, the times of leaves appearance, dry weights of each organ, and specific leaf area(SLA) were measured on a growth chamber with several light intensity gradients(385, 32, 17, 8, and 5μ㏖ m^(-2)s^(-1)). There was a positive correlationship between the size of cotyledon and the biomass of cotyledon and total seedling. Hypocotyl was more elongated under relatively low light intensities, such as 32, 17, 8, and 5μ㏖ m^(-2)s^(-1) than under 385μ㏖ m^(-2)s^(-1) light intensity, however, dry weight of the hypocotyl was adverse. As the light intensities decreased, the leaf appearance was delayed and the number of leaves decresed. In addition, leaves did not appear under 8μ㏖ m^(-2)s^(-1) and 5μ㏖ m^(-2)s^(-1) light intensity. Although cotyledons were more fully expanded under 32 and 17μ㏖ m^(-2)s^(-1) light intensities than 385μ㏖ m^(-2)s^(-1) light intensity, the dry weights of cotyledons were greater under the high light intensity. The dry weight of cotyledon, hypocotyl, root and leaves showed a decreased pattern with decreasing light intensities, but root to shoot(hypocotyl+leaves) ratio rapidly increased. Roots did not develop below 8μ㏖ m^(-2)s^(-1) light intensity. In conclusion, the results showed that the critical minimum light intensity for growing of Corpus controversa seedlings was above 17μ㏖m^(-2)s^(-1) light intensity.

      • KCI등재후보
      • KCI등재

        층층나무 자엽단계(子葉段階) 유묘(幼苗)의 생장(生長)과 한계광도(限界光度)에 관(關)한 연구(硏究)

        조재형,홍성각,김종진,Cho, Jae Hyoung,Hong, Sung Gak,Kim, Jong Jin 한국산림과학회 1998 한국산림과학회지 Vol.87 No.3

        본 연구는 광도가 층층나무 자엽단계 유묘의 생장에 미치는 영향과 생장에 필요로 하는 한계광도를 구명하기 위하여 자엽단계의 유묘를 대상으로 385, 32, 17, 8 및 $5{\mu}mol\;m^{-2}s^{-1}$의 광도로 설계된 growth chamber내에서 자엽하축의 길이생장, 자엽의 팽창, 본엽의 발생시기, 부위별 건중량 등을 측정하였다. 자엽은 유묘의 초기생장에 영향을 미쳐 자엽의 크기가 증가할수록 유묘의 생장도 좋았다. 자엽하축의 길이 생장은 $385{\mu}mol\;m^{-2}s^{-1}$ 광도에서 보다 상대적으로 낮은 광도인 32, 17, 8, $5{\mu}mol\;m^{-2}s^{-1}$에서 증가되었으나 건중량은 광도가 낮아질수록 감소되었다. 광도가 낮아짐에 따라 본엽의 발생시기가 늦어졌으며 발생수도 감소되었고, $8{\mu}mol\;m^{-2}s^{-1}$와 $5{\mu}mol\;m^{-2}s^{-1}$ 광도에서는 본엽이 발생 조차 되지 않았다. 자엽은 $385{\mu}mol\;m^{-2}s^{-1}$ 광도에서 보다 $32{\mu}mol\;m^{-2}s^{-1}$와 $17{\mu}mol\;m^{-2}s^{-1}$ 광도에서 더 많이 팽창하였지만 건중량은 적었다. 광도가 낮아짐에 따라 자엽, 자엽하축, 뿌리, 본엽의 건중량이 감소되었으며 자엽의 건중량 감소율용보다 뿌리의 감소율이 더 높아 T/R율은 급격히 증가되었다. $8{\mu}mol\;m^{-2}s^{-1}$와 $5{\mu}mol\;m^{-2}s^{-1}$ 광도에서는 뿌리가 거의 발달하지 못하였다. 본 실험을 통해 볼 때 층층나무 발아유묘의 생육가능 최저광도는 $17{\mu}mol\;m^{-2}s^{-1}$ 이상인 것으로 사료된다. To investigate the effects of light intensity on the growth, and the critical minimum light intensity for growing of Cornus controversa seedlings at the stage of cotyledon, hypocotyl elongation, cotyledon expansion, the times of leaves appearance, dry weights of each organ, and specific leaf area(SLA) were measured on a growth chamber with several light intensity gradients(385, 32, 17, 8, and $5{\mu}mol\;m^{-2}s^{-1}$). There was a positive correlationship between the size of cotyledon and the biomass of cotyledon and total seedling. Hypocotyl was more elongated under relatively low light intensities, such as 32, 17, 8, and $5{\mu}mol\;m^{-2}s^{-1}$ than under $385{\mu}mol\;m^{-2}s^{-1}$ light intensity, however, dry weight of the hypocotyl was adverse. As the light intensities decreased, the leaf appearance was delayed and the number of leaves decresed. In addition, leaves did not appear under $8{\mu}mol\;m^{-2}s^{-1}$ and $5{\mu}mol\;m^{-2}s^{-1}$ light intensity. Although cotyledons were more fully expanded under 32 and $17{\mu}mol\;m^{-2}s^{-1}$ light intensities than $385{\mu}mol\;m^{-2}s^{-1}$ light intensity, the dry weights of cotyledons were greater under the high light intensity. The dry weight of cotyledon, hypocotyl, root and leaves showed a decreased pattern with decreasing light intensities, but root to shoot(hypocotyl+leaves) ratio rapidly increased. Roots did not develop below $8{\mu}mol\;m^{-2}s^{-1}$ light intensity. In conclusion, the results showed that the critical minimum light intensity for growing of Cornus controversa seedlings was above $17{\mu}mol\;m^{-2}s^{-1}$ light intensity.

      • KCI등재

        수목종자 직파에 의한 암반절개사면 부분녹화

        김종진,홍성각,이기철,이덕수,윤택승 한국환경농학회 1999 한국환경농학회지 Vol.18 No.3

        본 연구는 암반절개사면에 천공 또는 브레이크를 이용하여 부분적으로 조성한(전사면의 10∼20%) 식생기반에 자생수종(소나무, 붉나무, 담쟁이덩굴)의 종자 또는 파종립을 직파하여 식생을 도입하는 암반사면 부분 녹화법을 개발하기 위하여 실시되었다. 발아촉진처리된 종자에 피트모스, 진흙, 흡습제(3.5:1:0.2, v/v)를 피복한 파종립(1∼2㎤)은 대조구 종자보다 포장 및 현지 실험에서 발아율이 약 2배 더 높았다. 현지 실험에서 직파종자의 발아율 및 발아한 묘�遲�생존율은 여름 및 가을철 직파시 보다 봄철 직파시에 더 높은 성공률을 보였다. 현지 실험에서 공시 수종의 파종립과 종자의 발아율은 퇴비가 포함된 배양토에서 0∼3%로 매우 낮았는데 퇴비는 발아종자 또는 유묘의 모잘록병을 유발시키는 것으로 추정되었다. 유묘의 생존율은 외부 침입 초본류에 의한 피압과 피압 받은 후 겨울철 건조에 영향받은 것으로 판단되었다. 성공율이 낮은 여름철 직파법의 대안으로써 1998년 8월에 소나무, 담쟁이덩굴 2년생 포트묘를 암반절개지에 식재한 결과는 성공적이었다. The direct seeding of seeds or the pellets of three native tree species (Pinus densiflora, Parthenocissus tricuspidata and Rhus chinensis) was tried on the rock cut-slope revegetation bed established by construction of mechanical excavation or erosion break with artificially enriched soil medium. The seed pellet(1∼2 cubic ㎝) made by coating seeds(treated with proper previous pregermination treatments) with the mixture of peatmoss, clay, chemical absorbant(3.5:1.0:0.2, v/v) showed about twice better percent germination than the control seeds. The percent germination and the survival rate of the germinated seedlings were higher in the spring direct seeding than the summer or the fall. The soil medium containing the compost showed extremely low percent germination(0∼3%) which presumably attributed to the compost inducing damping-off disease. The survival rates were affected mainly by shading of natural herbaceous vegetation invading from outside to the revegetation bed. The planting of two year old container seedlings of P. densiflora and P. tricuspidata on August 2, 1998 was successful indicating that it could be an alternative revegetation method in case the summer direct seeding is unfavorable.

      • KCI등재

        환경적 스트레스 자외선 - B 조사에 의한 피나무 유묘의 초기생장 특성

        김종진,홍성각 한국환경농학회 1996 한국환경농학회지 Vol.15 No.4

        본 연구는 자외선-B 照射가 피나무 유묘의 초기 생장에 미치는 영향을 알고자 수행되었다. 자외선-B는 유묘의 하배축 신장, 수고생장, 잎의 생장 및 엽록소 함량증가를 억제하였다. 이러한 억제 효과는 자외선-B 照射량이 증가할수록 더욱 높았다. 잎생장 감소 뿐만 아니라 형태적 변화도 나타났으며 엽장의 생장보다 엽폭의 생장이 빠르게 일어난 것이 관찰되었다. 자외선-B 처리를 받은 유묘의 1차엽 또는 2차엽에 변색, 반점, 반짝거림, 위축 또는 오그러듬의 피해증상이 관찰되었다. This studies was carried out to know the effects of ultraviolet-B(280∼320㎚) irradiation on the initial growth of Tilia amurensis Rupr. seedlings. UV-B irradiation inhibited the hypocotyl elongation, height growth, leaf growth, and chlorophyll formation. The inhibition was dose-dependent, and consequently those growths were more inhibited depending on the increase of UV-B levels. Morphological change such as leaf length/leaf width ratio was also observed in the leaves of irradiated seedlings. UV-B irradiation produced scorching, glazing or chlorosis, and stunting or dwarfing in the first or second leaf of the seedlings.

      • KCI등재

        도시형 삼림욕장의 환경 , 욕장식물의 탐색과 온도 및 광주기 반응

        김종진,홍성각,강병근,임형탁,손요환 한국임학회 1999 한국산림과학회지 Vol.88 No.4

        The studies were carried out to develop an urban forest aromatic bath in the idle space within city area for handicapped persons, patients and city workers, who having less chance to visit the natural forest aromatic bath. The environmental conditions were checked in the experimental double vinyl house where native and exotic aromatic woody and herbaceous plants were growing with minimum energy input in the periods of mid-winter and mid-summer. The growth and photoperiodic responses of the plants to the low and high temperatures were observed during winter and summer respectively. The most of herbaceous plants in the double vinyl house with the controlled minimum night temperature of -2℃ had no winter injury but did not grow and started the growth in April. The exotic herbs such as Catnip faassen's(Nepeta x faassenia) and Lemon bergamot(Monarda citriodora) grew better in the longer photoperiodic conditions. The growth rates of Abies koreana, Thuja koraiensis and Pinus sylvestriformis in the early spring were affected mainly by the night minimum temperature and less affected by the photoperiodic conditions during winter. The native aromatic herbs such as Robdosia japonica, Molsa punctulata, Agastache rugosa and Codonopsis lanceolata showed stimulatory growth at the 16 hours day-length in case of the high temperature vinyl hose: The height and root collar diameter growth of pine seedlings were inhibited in maxim temperatures over 40℃ during summer.

      • KCI등재

        자외선 - B 증가조사에 대한 양수와 중성수 유묘의 생장과 생리적 반응에 관한 연구

        김종진,홍성각 한국임학회 1999 한국산림과학회지 Vol.88 No.4

        This study was carried out to investigate the growth and physiological response of shade intolerant and intermediate tree seedlings to enhanced UV-B_(BE)(biologically effective UV-B) radiation. The seedlings of Betula platyphylla var. japonica Hara(shade intolerant species) and Fraxinus rhynchophylla Hance(shade intermediate species) were treated with one of the three levels of UV-B_(BE) dosages - ambient UV-B_(BE), ambient+3.2, and ambient+5.2 KJ m^(-2) day^(-1)) for 14 weeks in the field condition. Height and root collar diameter growth, leaf area, and biomass production of the seedlings of two species were reduced by enhanced UV-B radiation. Leaf stomatal resistance to water vapor of the F. rhynchophylla seedling was increased by the UV-B increment. The reductions in total chlorophyll and carotenoid were more apparent in the F. rhynchophylla than B. platyphylla seedling. There was no statistically significant changes in the concentration of UV-B absorbing compound(A_(300)) in the leaves of the two species among the UV-B treatment. However the A_(300) tented to be increased in F. rhynchophylla by enhanced UV-B radiation. These results indicate that the growth and the physiological and biochemical responses between B. platyphylla and F. rhynchophylla were different to enhanced UV-B environment.

      • KCI등재

        도시형 삼림욕장 목초본식물의 내음성 연구

        김종진,홍성각,임형탁 한국임학회 2000 한국산림과학회지 Vol.89 No.5

        The studies were carried out to know shade tolerance of the plants for the urban forest aromatic bath. The one to two year old potted seedlings were grown under the one of the five light conditions such as 100%, 50%, 30%, 10% and 2% of the full sun light intensities. Pinus densiflora S. et Z., P. sylvestriformis (Takenouchi) Chien., Thymus quinquecastatus Celak, Lonicera japonica Thunb, and Zingiber officinale Roscoe showed decreasing tendencies in height and root collar diameter growth, and dry mass production as the light intensity decreases. Exceptionally Thuja koraiensis Nakai showed the best growth in the 50% of full sun light intensity. Athyrium yokoscense (Fr. et Sab.) H. Christ showed better growth in the relative light intensity of 10 to 15% than in the in the relative light intensity of 25 to 30% in the bath green house.

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