• 한국연초학회지
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• 제11권2호
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• pp.197-202
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• 1989

This experiment was conducted to investigate the effect of growth medium in pots composed of upland soil(S), rice straw manure(M), carbonated rice hull(CRH), and their mixture on growth of tobacco cv. NC 82. The growth of shoot and root was vigorous in order of medium S+M+CRH>M>CRH>S. In M+S medium, root growth in the part of manure was superior to upland soil. But root growth of upland soil part in M+S plot was more vigorous than that in upland soil only. It is possibly due to be influenced by manure in M+S plot. Total length and weight of root, number of roots, and especially for development of adventitious root were closely related to shoot growth. Roots grown in upland soil part was brownish gray in color, while the roots in manure part was milky white. The milky white colored roots had longer life than others. It was concluded that root zone environments derived from several media in pots closely related to shoot growth and disease tolerance of tobacco plant.

• Journal of Ginseng Research
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• 제25권3호
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• pp.130-135
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• 2001

식물조직배양기술을 이용하여 사포닌 함량이 높은 인삼 root를 생산하고자, 인삼 root의 생장과 사포닌생산에 미치는 배지와 식물생장조절물질의 영향을 조사하였다. 인삼 root를 여러 종류의 배지에 배양하였을 때, 인삼 root의 생장과 사포닌 생산은 SH배지에서 가장 우수하였고, SH배지에 배양시, 접종후 약 10일후에 생체중량이 초기접종량의 2배가 되었다. 각 배지별로 배양한 인삼 root의 진세노사이드 패턴과 함량은 다소 차이가 있었는데, SH배지와 White배지에서 성장한 인삼 root의 총진세노사이드 함량이 가장 높았다. 생장조절물질에 있어서는 4.0mg/L NAA를 함유한 SH배지에서 성장한 인삼 root의 생장이 가장 우수하였고, 사포닌 함량은 0.5mg/L BAP 처리구에서 가장 높았다. 이러한 결과들은 인삼 root 배양에 의해 사포닌을 단기간에 생산할 수 있는 가능성을 제시하고 있다.

• 한국환경농학회지
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• 제19권5호
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• pp.394-400
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• 2000

${\gamma}-Radiation$ at very low doses frequently has a stimulating or hormetic effect on the growth of organism. Effects of low dose ${\gamma}-ray$ irradiation on the root growth of soybean cultivars were investigated and hormetic effects by environmental conditions were compared with the occurrence of increased economic yield, seeds of cultivars were irradiated with the dose of $0.5{\sim}20Gy$ and cultivated in growth chamber controling temperature, humidity, light, greenhouse and field respectively. To understand hormetic effect on root growth of cultivars and the difference of hormetic effect by cultivation environment, harvested root of soybean cultivars were scanned with image file, and root surface area, root length, root average diameter etc. were examined by WinRhizo program. Also, dry weight of cultivars was examined. Root growth and dry weight of soybean cultivars showed apparently hormetic effect at cultivation of growth chamber condition. In field experiment executed for whole life cycle, yields of pea were not different significantly in each ${\gamma}-ray$ irradiated cultivars but weight of one hundred peas increased in whole ${\gamma}-ray$ irradiated cultivars. Increment of yield was assumed to be induced through shortening of maturing stage caused by ${\gamma}-ray$ hormesis in early growth stage.

• Journal of Plant Biotechnology
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• 제51권
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• pp.273-277
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• 2024

The use of atmospheric plasma as a tool is increasingly being explored in agriculture, particularly for its potential to enhance plant growth and germination. Axillary roots, which accumulate valuable medicinal secondary metabolites, are sought after by the pharmaceutical industry. In this study, we investigated the effects of atmospheric plasma treatment on the root tips of three plant species to elucidate its effect on root development. Plasma treatment on the root tip inhibited primary root growth while significantly promoting axillary root development. Plasma treatment on root tips caused DNA damage, which likely suppresses primary root growth. In contrast, plasma-mediated accumulation of reactive oxygen species (ROS) in the root elongation zone may play a role in the development of a secondary meristem to facilitate axillary root formation. Taken together, our findings revealed that plasma treatment induced DNA damage and localized ROS accumulation, both of which likely enhance axillary root development. These results support a novel approach for enhancing root development in medicinal plants, offering potential applications for increasing the yield of valuable secondary metabolites.

• KIEAE Journal
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• 제8권2호
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• pp.59-64
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• 2008

This research was performed to activate various new technology for indoor container, and attempt to a desirable planting environment of indoor plant by verify effect that indoor container slit ventilation system gets in growth and root activation of Korea Native Plants. Main result is as following. 1. Davallia mariesii, typical epiphyte fern, was appeared that growth of top and root activation was helped by slit ventilation system in indoor container and were very positive in rhizome development specially. 2. Hedera rhombea was helped growth of top by slit ventilation system, and specially, effect of plant height and number of shoot. Also, this slit system was positive in root activation. So, this indoor container appeared by thing which is very desirable in climbing plants as well as epiphyte plants. According to result that see effect getting in growth and root activation of Davallia mariesii and Hedera rhombea for indoor container slit ventilation system, Growth of top was different in plant but root activation was developed.

• 한국초지조사료학회지
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• 제9권3호
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• pp.135-140
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• 1989

This experiment was to study the relationship between shoot and root system in perennial ryegrass at different stages of growth. The results are summarized as follows; 1. The dry weight of shoot was significantly correlated with the dry weight of root at both stages of growth. 2. The yield components of shoot and root systems were changed by the stages of growth. Thus, the dry weights of shoot and root were positive correlated with the number of tillers and roots at 60 days after sowing. But, the dry weights of shoot and root were positive correlated with the dry weight of root, the dry weight of tiller, length of plant and length of root at 90 days after sowing. 3. Maprirna variety was obtained a higher dry weights of shoot and root at 60 days after sowing, but, Alta variety was obtained at 90 days after sowing, respectively. 4. The dry weight of shoot was positive correlated with leaf area at both stages of growth. 5. The dry weight of shoot was significantly negative correlated with specific leaf weight at 60 days after sowing, but positive correlated with specific leaf weight at 90 days afikr sowing. 6. The dry weight of root was smcantly positive correlated with leaf area at 60 days after sowing, but not recognized at 90 days after sowing.

• 한국초지조사료학회지
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• 제23권2호
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• pp.91-94
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• 2003

비교되는 포장조건에 따라 부리 분포 양상을 조사하기 위하여 Rhizotron법을 사용하였다. Lincoln 지역에서 토양 깊이에 따른 뿌리의 분포는 15∼30 cm 깊이에 대부분의 뿌리가 분포되어 있고, 0∼15 cm와 30 cm 이하에서는 분포가 적었다. 반면, Winchmore에서는 토양 깊이가 깊어질 수록 뿌리 수가 많아졌다. Mt John에서는 표토에 가까울 수록 뿌리 분포도가 더 높았으며, 시비량이 높고 관개를 한 곳이 부리 분포가 더 높았다. 모든 지역에서 토양 깊이에 따른 뿌리 수의 분포는 뿌리 길이와 같은 경향을 보여주었다. Tube법이 같은 장소에서 뿌리의 비교 연구와 장기간 무리 생장 연구를 하는데 좋은 방법임이 입증되었다.

• 한국약용작물학회지
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• 제12권2호
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• pp.118-122
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• 2004

We have investigated that a couple of soft ferrite ceramic powders having a spinal structure have shown the effect on growth and secondary metabolites production of some medicinal plants cultured in vitro. The addition of the ceramic powders as bare state to culture medium has stimulated the growth of Achyranthes japonica callus and plantlet, adventitious root of Hyoscyamus niger and Platycodon grandiflorum hairy root about 65, 75, 150 and 50%, respectively. Whereas Centella asiatica callus and plantlet, Scopolia parviflora hairy root, and Hyoscyamus albus adventitious root were not affected markedly. Moreover, the ceramic powder has enhanced the growth of H. niger adventitious roots even under conditions of irradiating alone without any direct contact between ceramic powder and media. Based on growth stimulation effect, the ceramic powders have enhanced the gross production of tropane alkaloid in H. niger adventitious root, and polyacetylene in P. grandiflorum hairy root about 35 and 30%, respectively.

• 한국조경학회지
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• 제28권4호
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• pp.1-8
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• 2000

This study is conducted to evaluate the effects of root restriction on growth of maple(Acer palmatum Thumb.). Tow types of container such as clay pot(CP), root control bag(RCB) were used to restrict maple's root and each type of container was divided into 5 sizes. The containers with plants were buried just below the soil level and maples planted directly in the soil (nonrestricted root treatment) were included as comparison. Data were collected on dry weight of leaf, trunk, thick root, rootlet and soil water potential. We have analyzed, simple linear regression, Pearson's Correlation analysis, Duncan's multiple rang test, and Covariance Analysis using SAS statistical software. The results of analysis based on these data are as follows; 1. Total dry weight of maple in CP was significantly larger than in RCB. 2. Difference in growth reduction by the kinds of containers was induced by different hydraulic diffusion ratios between container and soil. Difference in growth reduction by the size of container was induced by the difference density of rootlet and soil moisture contents in the container. 4. Commercial products of root control of root control bag appeared not proper for countries in which fluctuation of rainfall is severe. Because maples in RCB were restricted by excess soil water in the rainy season, or by lack of soil water in the dray season.

• 한국초지조사료학회지
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• 제20권2호
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• pp.85-90
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• 2000

Forage sorghum (Sorghum bicolor x S. bicolor) was cultivated for knowing the effect of alum sludge application on its root growth in a mountainous site, Kumsan. And the results obtained are as follows: The available P205 content in the soil seemed to decrease with the advance of level of alum sludge application. And plant P content decreased with the advance of sludge application without phosphate fertilizer. With phosphate fertilizer, root number of the forage was greater than that without the fertilizer. The root growth of forage sorghum was the highest with NPK and the least in control and alum application, and it is not recommended to apply NPK and alum together for the growth of the forage root. (Key words : Root, Sorghum, Mineral, Sludge, Kumsan)