• Journal of Biosystems Engineering
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• 제29권5호
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• pp.451-456
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• 2004

To establish a Altari radish pre-processing system far kimchi, the leaves and root tail of the Altari radish cutting de-vices were developed. The cutting resistances depend on the edge angles, oblique angles and cutting speeds were measured and analyzed. The experiments were performed to reveal the optimal conditions that showed the minimum cutting resistances acting on the materials. As the results, the optimum conditions that acting on the leaves were at edge angle $25^{\circ}$, oblique angle $40^{\circ}$ and cutting speed 0.5 m/s, and those acting on the root tails were at edge angle $20^{\circ}$, oblique angle $30^{\circ}$ and cutting speed 0.5 m/s, respectively. Considered a safety conception, the oblique angle of the leaves cutting device was adjusted as $20^{\circ}$, and then the cutting efficiencies of the both devices at these conditions were showed perfect performances.

• 한국조경학회지
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• 제31권5호
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• pp.11-19
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• 2003

The main purpose of this study was to examine the application of the root system as a shore protection material through the measurement of the 개ot growth curve of Salix gracilisyla Miq. depending on the cutting size. As materials and methodology, nine group of cuttings were classified by the length(l0cm, 20cm, 40cm) and the diameter(0.72cmm$\pm$0,02, 0.58cm$\pm$0.02, 0.35cm$\pm$0.02), Each group was stuck to a flooding bed of sandy loam(Sand 60,36%, Silt 28%, Clay 11.64%) on 27th March 2001, After 65 growing days, the weight and length of the newly developed roots, shoots, and leaves were measured and analysed, This was repeated at 99, 129, 159, and 190 growing days. The major findings were as follows. The primary determinant of the root growth rate was on the weight of cutting, The secondary determinant was on the number of growing days. In addition, the dominant dimension of the cutting was the diameter rather than the length, The thicker cutting caused more rapid and stable growth however the longer cutting made the growth of the root slower and more unstable.

• 한국자원식물학회지
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• 제13권2호
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• pp.140-146
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• 2000

생열귀나무의 번식에 관한 연구로 숙지, 녹지, 반녹지삽 및 근삽등의 삽목번식체계를 확립하기 위하여 실시된 실험 결과는 다음과 같다. 1. 생열귀나무의 숙지, 녹지, 반녹지삽으로 삽목실험을 한 결과 숙지삽에 대한 결과는 각각의 생장 조절물질 및 상토조건에서 발근이 전혀되지 않았으며 반녹지삽, 녹지삽, 근삽의 순으로 양호한 발근율을 나타내어 생열귀 삽목시 숙지삽이나 반녹지삽을 이용하는 것보다 녹지삽을 채취하거나 근삽을 이용하여 삽목하는 것이 양호하였다. 2.녹지삽의 경우 무처리 식물체가 전혀 발근이 되지 않은 반면 rooton-F를 처리하는 것이 가장 양호한 발근율을 나타내었으며 NAA 처리시는 저농도에서 발근율 및 캘러스형성율이 증가하였고 IAA를 처리한 경우는 고농도일수록 발근율 및 캘러스형성율이 양호하였다. IBA는 IAA, NAA보다는 저조한 결과를 나타냈었다. 3. 녹지삽에서는 vermiculite와 perlite의 혼합토양에 삽목하는 것이 가장 양호한 발근율을 나타내었으며 그 다음으로 점토, 사토 순으로 나타났다. 녹지삽에 rooton-F를 처리하였을 때 근장에 있어서는 사토가 더 우수한 반면 근수는 점토에서 더 우수하여 점토와 사토에서 근수와 근장이 서로 상반된 차이를 보였다. 4. 반녹지삽에 rooton-F를 분의처리한 경우 녹지삽에서 결과가 좋았던 vermiculite+perlite에서는 10%정도만 유기되고 점토에서 양호한 발근효과를 나타내었다.

• 한국자원식물학회지
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• 제11권3호
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• pp.353-357
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• 1998

This study was conducted to determine the effect of growth regulators, genotype, and cutting position on the rooting and root growth from cutting of Chrysanthemum zawadskii H.. Rooting rate of Keungugeolcho in the treatement of IBA 500 and 1000 ppm was the better than those of other treatments of IAA, NAA and Rooton. Rooting rate differed depending on the genotype. Hangryobonggugeolcho was better than Keungucheolcho in rooting rate. The treatment of rooton remarkably induced many roots from the cuttings of eight accessions of Chrysanthemum zawadskii H.. Also, rooting rate and number of root differed depending on cutting position. When cuttings including shoot tip were cultured on tray containing bed soil, rooting rate and number of root induced from cuttings with shoot tip was higher than when cuttings without shoot tip and with lateral axillary bud were cultured.

• 원예과학기술지
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• 제30권1호
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• pp.13-20
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• 2012

본 연구는 스탠다드 국화 '백마' 품종의 플러그 묘 생산에 있어서 삽수의 조건이 지상부 생육과 발근 및 정식 후의 절화 생육에 미치는 영향을 알아보고자 실시하였다. 삽수에 잎을 많이 부착할수록 삽목묘의 지상부 생육이 양호하였고, 잎을 4-6장 부착하여 삽목하는 것이 다른 처리에 비해 발근에 효과적이었다. 삽수길이에 따른 삽목묘의 지상부 생육은 큰 차이가 없었으며, 삽수길이를 5-7cm로 처리하는 것이 발근상태가 양호하였다. 삽수 굵기는 3.1mm 처리에 비해 3.6mm와 4.2mm 처리에서 삽목묘의 지상부 생육과 발근이 양호하였다. NAA 처리농도가 높을수록 삽목묘의 지상부 생육이 억제되었으며, 뿌리의 길이도 짧아졌다. NAA $100mg{\cdot}L^{-1}$를 1시간 처리하여 삽목하는 것이 삽목묘의 지상부 생육과 발근에 효과적이었다. 피트모스와 펄라이트를 2:2로 혼합한 배지에서 다른 처리에 비해 뿌리의 길이, 수 및 무게 등이 뿌리의 생육이 양호하였다. 잎이 적은 것보다 4-6개 부착된 삽수의 삽목묘를 정식했을 때, 절화장이 길고, 무게가 무거웠으며, 엽수도 많았다. 삽수길이에 있어서 7-9cm 처리가 절화장, 절화무게, 설상화 수 등 전반적인 절화의 생육에 효과적이었다. 따라서 '백마' 플러그 묘 생산시 7cm 길이에 3.6mm 굵기의 4-6장의 잎을 부착한 삽수를 삽목하는 것이 삽목묘의 지상부 생육과 발근 및 정식 후의 절화 생육을 위해 바람직하였다.

• 한국약용작물학회지
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• 제20권5호
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• pp.353-358
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• 2012

This study was conducted to enhance the propagation of Acanthopanax divaricatus and Acanthopanax koreanum through different cutting practices. For propagation by cuttings, scions were taken on September 1. This already has hard skin and showed much higher values in terms of root length, root number, rooting ratio and root weight than those taken on June 30 and August 1. Regardless of cutting date, 50% shading resulted to the highest root length, root number, root ratio and root weight. Meanwhile, 95% shading significantly reduced these parameters compared with no shading. These results suggest that over-shading may inhibit root growth. Two growth regulators, IBA (concentration of 1,000, 2,000, 3,000 ppm) and Rootone-F (0.4%) were also tested of its effect to the cuttings. Rootone-F was found to be more effective than IBA. Cutting treated with Rootone-F had slightly higher root length and root number. A. koreanum which grows well in hot climatic condition showed better rooting ability than A. divaricatus.

• 한국작물학회지
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• 제48권2호
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• pp.108-112
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• 2003

Foehn damage on rice plant is one of the important abiotic stresses in eastern costal area of Korea. To know the relationship between foehn impact and morphological traits of rice, wind tunnel method was used with 106 rice cultivars. Less influencing traits on foehn were short panicle, large panicle number per hill, thin panicle neck, and the flag leaf of narrow, short and thick. Leaf pubescence reduced the impact on foehn. 'Naepungbyeo' belong-ed to foehn tolerant varietal group, while 'Ansanbyeo' belonged to the opposite group. Three levels of root cutting treatment with two rice cultivars were conducted to evaluate the foehn impact using wind tunnel. The severity of wind damages was followed the sigmoidal curve duration of wind tunnel treatment were prolonged. Different responses of root cutting to wind tunnel treatment could be used to evaluate the severity of the foehn impact. 'Naepungbyeo' was one of the less implausible cultivars on foehn. 'Nae-pungbyeo' showed tolerant response to wind under 21% root removing treat-ment (20㎝ root cutting), however 'Ansanbyeo' was wilted under the same treatment. In case of 35 % root removing treatment(10㎝ root cutting), both rice cultivars failed to alive against foehn wind.

• 한국잠사곤충학회지
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• 제33권2호
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• pp.63-67
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• 1991

뽕나무(품종:신광뽕) 고조삽목에 있어서 삽수를 NAA 농도를 달리하여 2주간 유합촉진한 후 온실에 삽목한 경우 농도에 따른 발아 및 발근생장에 미치는 영향을 알기 위하여 시험한 결과는 다음과 같다. 1. 삽수동아의 발아생장은 NAA 농도가 높아짐에 EK라 삽목후 10일까지는 억제되어 지연되었다. 그러나 유합촉진 2주후에는 150ppmrn를 제외하고는 93% 이상 대부분 발아되었다. 2. NAA 농도별 발근은 삽목 15일 후 높은 농도에서 비교적 높은 발근율을 나타내었으며 이후 어느 농도에서나 증가하여 35일 후에는 매우 높은 농도(150ppm)에서 낙해발생으로 인한 다소 낮은 발근율을 제외하고는 그 이상 농도에서 100%의 발근율을 나타내었다. 3. 평균 뿌리길이는 농도가 높아짐에 따라 적었으나 주당 뿌리수, 뿌리길이 및 무게는 50ppmrn가 가장 많았다.

• 한국산림과학회지
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• 제76권3호
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• pp.218-229
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• 1987

본(本) 연구(硏究)는 광환경(光環境) 및 근장(根長)의 정도(程度)를 각기 달리한 잣나무 유묘(幼苗)의 중량(重量) 생장(生長)을 측정(測定) 고찰(考察)한 것으로 그 결과(結果)는 다음과 같았다. 1) 묘목(苗木)의 중량(重量) 생장(生長)은 상대광도(相對光度) 63%구(區)가 가장 높게 나타났으나 전체적(全體的)으로는 피음(被陰)의 정도(程度)가 강(強)할 수록 점차(漸次)로 감소(減少)하는 경향(傾向)을 보였으며, 단근(斷根) 처리(處理)의 경우는 1/4 단근구(斷根區)가 타(他) 처리구(處理區)에 비(比)해 제일 높았다. 2) 묘목(苗木)의 T/R율(率)값은 광도(光度)가 낮았을 때와 단근(斷根) 정도(程度)가 강(強)할 수록 각각(各各) 그 값이 점차(漸次)로 높게 나타나서 결국(結局) 피음(被陰) 및 단근(斷根)의 정도(程度)가 강(強)할 수록 묘목(苗木)의 생장(生長)은 약세(弱勢)를 나타냈다. 3) 그리고 광도(光度) 및 단근량(斷根量)과 T/R율(率) 간(間)에는 2차(次) 회귀관계(回歸關係)에 있음을 알 수 있었다.

• 한국환경복원기술학회지
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• 제16권3호
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• pp.97-105
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• 2013

Kalopanax septemlobus (Thunb. ex Murray) Koidz. is natively distributed in Korea. The importance of this species has been increased not only for high quality timber but for medicinal and edible uses. However, increasing market demand of K. septemlobus with illegal cutting and overexploitation has resulted in its rapid depletion and destruction of natural habitat. This study was conducted to understand the survival rate and growth characteristics of planted K. septemlobus seedlings with treatment of root pruning, stem cutting and planting density. The survival rate and growth of height and root-collar diameter for one- and two-year old seedlings with different planting densities were investigated in the clear-cut area of a Pinus densiflora stand for five years. One-year-old seedlings were treated with or without root pruning and planted with three density levels (5,000 trees $ha^{-1}$, 10,000 trees $ha^{-1}$, and 40,000 trees $ha^{-1}$). Two-year-old seedlings were treated with and without stem cutting and planted with the density of 5,000 trees $ha^{-1}$. The survival rate of one-year-old seedlings with root pruning treatment in the density of 10,000 trees $ha^{-1}$ was 92%, while that without root pruning in the density of 40,000 trees $ha^{-1}$ was 67% after five years. The height of one-year-old seedlings has been significantly affected only by planting density in the $5^{th}$ year. The survival rate of the two-year-old seedlings with stem cutting was 75.5% and greater than control (67.3%) in the $5^{th}$ year but no difference in height was shown between the two treatments from three years after plantation.