• 사물인터넷융복합논문지
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• 제2권2호
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• pp.27-36
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• 2016

요즘 많은 사람들이 건강한 식생활에 관심이 많다. 건강한 식생활을 위해 유기농 야채를 구입하거나 직접 기르기를 원한다. 하지만 신선한 채소를 직접 기르기에는 많은 어려움이 따른다. 본 연구에서는 가정에서 직접 식물을 재배하는 스마트 식물재배기를 제안한다. 본 스마트 식물재배기는 사용자가 자세한 식물 생장 환경에 대해 알 필요가 없으며, 최소한의 노력으로 최적의 환경에서 식물을 재배할 수 있도록 한다. 또한, 스마트 식물재배기의 온라인 활동을 통하여 식물재배의 재미를 느낄 수 있으며, 건강한 식생활에 이바지할 것으로 사료된다.

• 한국자원식물학회지
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• 제28권2호
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• pp.243-252
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• 2015

본 연구는 제주특산식물인 좀향유의 현지 내･외 보존을 위한 기초 연구로서 증식체계를 마련하고 전처리제 처리에 따른 발근 특성과 시비에 따른 유묘의 생장 효과를 등을 알아보았다. 온실과 밀폐상의 온습도 조사결과 평균 온도는 비슷하였으나 공중 습도는 온실보다 밀폐상이 높은 습도를 유지하였으며, 좀향유 삽목 후 온실은 10일, 밀폐상은 7일만에 최초 발근을 확인하여 밀폐상의 빠른 발근율을 보였으며 온실과 밀폐상에서의 생존율, 발근율, 뿌리수 등은 근소하게 밀폐상이 높게 조사되어 온실보다 밀폐상이 효과적이었다. 발근억제물질 제거를 위한 전처리제 처리는 AgNO₃ 77.5%를 제외한 다른 처리구에서 95% 이상의 높은 발근율로 조사되어 좀향유의 경우 발근억제 물질은 적은 것으로 판단된다. 유묘의 용기별 질소 시비량 및 Osmocote 시비시험 결과 시비량과 용기의 조건에 따라 생존율과 생장 등에 차이를 보였다. 배양판에서 완효성 비료인 Osmocote를 시비한 결과 생존율, 지상부, 지하부 생장 등이 가장 양호하여 좀향유의 유묘 증식을 위해서는 Osmocote 시비가 바람직 할 것으로 판단된다.

• The Korean Journal of Ecology
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• 제23권4호
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• pp.293-298
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• 2000

To study the effect of global warming on the growth of plants and plant populations throughout their life cycle under a field-like condition, we constructed a Temperature Gradient Chamber (TGC) in Tsukuba, Japan. The chamber had slender shape : 30 m long. 3 m wide, and 2.5 m high. That satisfactory performance was confirmed by a test throughout all seasons in 1998: the projected global warming condition in the near future was simulated. That is, independent of a great daily or seasonal change in ambient meteorological conditions, air temperatures at the air outlet were warmed 5$^{\circ}C$ higher than those at the ambient (the annual mean was 14.3$^{\circ}C$) with precision of ${\pm}$0.2$^{\circ}C$ (the annual means were 19.2$^{\circ}C$) with a rising rate of approximately 1$^{\circ}C$ every 5 m. This chamber will enable us to study the effects of global warming on growth of plants and plant populations because their abilities to control air temperature are excellent. TGC is expected that it would be utilized for studying the effect of global warming on plant growth under natural weather conditions.

• 생물환경조절학회지
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• 제18권3호
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• pp.200-207
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• 2009

This study was conducted to analyze the variations of air temperature, relative humidity and pressure in a low pressure chamber for plant growth. The low pressure chamber was composed of an acrylic cylinder, a stainless plate, a mass flow controller, an elastomer pressure controller, a read-out-box, a vacuum pump, and sensors of air temperature, relative humidity, and pressure. The pressure leakage in the low pressure chamber was greatly affected by the material and connection method of tubes. The leakage rate in the low pressure chamber with the welding of the stainless tubes and a plate decreased by $0.21kPa{\cdot}h^{-1}$, whereas the leakage in the low pressure chamber with teflon tube and rubber O-ring was given by $1.03kPa{\cdot}h^{-1}$. Pressure in the low pressure chamber was sensitively fluctuated by the air temperature inside the chamber. An elastomer pressure controller was installed to keep the pressure in the low pressure chamber at a setting value. However, inside relative humidity at dark period increased to saturation level.. Two levels (25 and 50kPa) of pressure and two levels (500 and 1,000sccm) of mass flow rate were provided to investigate the effect of low pressure and mass flow rate on relative humidity inside the chamber. It was concluded that low setting value of pressure and high mass flow rate of mixed gas were the effective methods to control the pressure and to suppress the excessive rise of relative humidity inside the chamber.

• 한국자원식물학회지
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• 제26권6호
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• pp.701-708
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• 2013

To test the quality change of seedlings of three domestic medicinal plants raised in plug trays, a short term storage experiment was conducted. Seedlings were kept in growth chambers for two weeks at 4 or $8^{\circ}C$ temperature combined with 0 or $5{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD. Quality of glasshouse-raised seedlings was assessed after two weeks of cold storage in the growth chamber and one week of acclimation in the greenhouse. After two weeks of storage in the growth chamber of Perilla frutescens var. acuta Kudo, plant height was the greatest in the treatment $8^{\circ}C$ combined with $0{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD. Internode length of P. frutescens var. acuta Kudo was the greatest in the treatment of $4^{\circ}C$ combined with $0{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD. After one week of acclimatization in a glasshouse, the growth and development, such as plant height, internode length and leaf size, were greater in the $8^{\circ}C$ combined with $5{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD than in the other treatments. After two weeks of storage in the growth chamber of Sophora tonkinensis, plant height increased more in the treatment of $4^{\circ}C$ than $8^{\circ}C$. After one week of acclimatization in a glasshouse, number of leaves did not change in the treatment of $4^{\circ}C$ combined with $0{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD, but it increased in the other treatments. Leaf width increased more under the dark than light condition. Leaf length did not observably change in any treatments. After two weeks of storage in the growth chamber, plant height of Angelica gigas Nakai was the greatest in the treatment of $8^{\circ}C$. Number of leaves was the greatest in the treatment of $8^{\circ}C$. Leaf growth was greater under dark than light condition. These results suggested that optimal storage environment was $8^{\circ}C$ combined with $5{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD for P. frutescens var. acuta Kudo, and $4^{\circ}C$ combined with $0{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD for S. tonkinensis and A. gigas Nakai. Hence, proper combination of temperature and PPFD were necessary for better storage, and acclimatization and growth, thereafter, of the plug seedlings of theses plant species.

• Journal of Forest and Environmental Science
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• 제30권2호
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• pp.218-225
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• 2014

Studies were carried out to standardize and develop a suitable macro-propagation technology for large scale production of superior clonal stock through stem cuttings in Commiphora wightii Arnott (Bhandari), a data deficient medicinal plant of arid region. For the purpose, three experiments were conducted. The first experiment was tried to elucidate the impact of various cutting diameters (0.50-0.75 cm, 0.75-1.00 cm, 1.00-1.50 cm, and >1.50 cm) in combination with varying growing conditions (sunlight, shade house and mist chamber) on shoot sprouting and rooting without using exogenous plant growth regulators. Cutting diameter (size 0.75-1.00 cm) in mist chamber has shown maximum sprouting (90.00%) and rooting (73.33%), primary root (6.67) and secondary root (16.67) followed by 1.00-1.51 cm in mist chamber. Minimum sprouting (40.00%), rooting (33.33%), number of shoot (1.33), primary root (1.00) and number of secondary root (1.00) was recorded in cutting diameter (size >1.50 cm) in sunlight. Second experiment was performed to find out optimum growth regulator concentration of rooting hormone (100, 200, 500 and 1000 ppm) of Indole-3-acetic acid (IAA) and Indole-3-butyric Acid (IBA) on adventitious root formation on cuttings diameter (size 0.25-0.50 cm) in comparison to control. Maximum rooting percentage (93.33%) was recorded in 200 ppm followed by 500 ppm (86.66%) of IBA as compared to control, which showed only 60 per cent sprouting. Third experiment was performed with newly formed juvenile micro-cuttings treated with varying concentrations of IAA and IBA. The juvenile cuttings (size 6-10 cm, basal dia <0.25 cm) were selected as micro-cuttings. The cuttings treated with IBA (500 ppm) showed 64.30% rooting as compared to other treatments. Results of above experiments indicate that cuttings (size 0.75-1.00 cm dia) may be developed in mist chamber for better performance. While using heavier cuttings, no growth promoting hormones is required however; growth regulator 200 ppm concentration of IBA rooting hormone was observed optimum for promoting macro-propagation in stem cuttings of lower diameter class (0.25-0.50 cm).

• 한국버섯학회지
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• 제17권2호
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• pp.41-46
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• 2019

This study was carried out to investigate optimum wind velocity for growth of Pleurotus ostreatus. In the chamber experiments, the divergence of pileus was $63^{\circ}$ in 0.3m/s, and it showed the tendency that the more the air velocity was increased, the more the divergence became small. And the ratio of commercial yields was 96% in the air velocity of 0.3m/s. In the cultivation room experiments, the divergence of pileus was $64^{\circ}$ in 0.3m/s, and it was the tendency that the more the air velocity was fast, the more the divergence became larger. And the commercial yields was similar to the trend of the chamber experiment as 94.8% in 0.3m/s, and the quality characteristics of the fruit-body showed the uniform quality in comparison with other treatment because the standard deviation of the size of the pileus, etc. was the lowest in 0.3m/s like the chamber experiment.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.156-156
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• 2017

Plants are grown under constitutive changing of environmental conditions and response to external conditions at both protein and transcription level. The effects of heat on plant growth are broad and influence the yield directly. Heat stresses could be classified depend on intensity and duration. Fundamental changes of growth condition by climate change maybe or maybe not classified as a stress on plant growth. The effects of a short and unanticipated impact of elevated heat on plant could be different with those of under longer extension of ambient heat. To examine differently expressed gene sets by ambient heat stress of soybean, we grow the soybean in normal condition for three weeks. After that, soybean plants move to growth chamber. The temperature of growth chamber increase up to $9^{\circ}C$ for four days. We have extracted mRNA and micro RNA every 24 hours and carried RNA sequence analysis. We found major metabolic pathways affected by ambient heat stress. Mainly carbon metabolism, translation machinery and amino acid synthesis are affected. We discussed the expression patterns of genes of heat sensing and hormone responses.

• 한국환경복원기술학회지
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• 제19권1호
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• pp.101-109
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• 2016

This is the fundamental research on restoring damaged vegetation areas in the vicinity of DMZ using local native plant species. This research is aimed at identifying effective plant growth regulators (PGR) for seed germination and seedling growth of mountain mulberry, and developing effective methods for managing its germination and growth. Mountain mulberry seeds were collected from the regions in the DMZ vicinity, and tests with seven treatments using four PGRs including $GA_3$, kinetin, ABA and NAA, were conducted. The germination rate was calculated in two different ways of both in a growth chamber and in a greenhouse after seven days observation, and the growth characters such as leaf width/length, seedling width/length and fresh/dry weight, have been surveyed in a greenhouse for three months. Although in the growth chamber the highest germination rate was shown at a group with the kinetin treatment, it was not significantly different to that of the control group. Groups with ABA or NAA presented relatively low germination rates. As for the greenhouse test, the germination rates of all groups ranged 20~30% without significant difference each other, the reason of which might be due to low absorption by the effect of a soil drench method used in this study. The entire growth characters with the treatments of $2.15mg{\cdot}L^{-1}$ of kinetin and $10mg{\cdot}L^{-1}$ of $GA_3$ were significantly different to the control. NAA treatment only showed better growth of seedling width compared to the control. Consequently, the most effective PGRs for the germination and growth of mountain mulberry near the DMZ was kinetin. Further research on examining the most effective concentration of them was needed.

• 화훼연구
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• 제17권4호
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• pp.266-270
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• 2009

깽깽이풀의 임의 개회조절을 목적으로 입실시기, 저온처리 등이 맹아, 생장 및 개화 등에 미치는 영향을 살펴보았다. 입실시기에 따라서는 8월 20일부터 12월 20일까지 입실한 묘는 모두 맹아가 되지 않았다. 그러나 1월 20일과 2월 20일에 입실한 묘는 모두 맹아되어 개화되었다. 저온처리 개시시기와 처리기간이 깽깽이풀의 생장과 개화에 미치는 영향을 살펴본 결과는 8월 고온기에는 60일간의 저온을 받게 되면 맹아하여 개화하였다. 그러나 9월 20일 이후에는 30일간의 저온처리만으로도 거의 전개체가 맹아하여 개화하였다. 이미 저온처리를 한번 받아 휴면이 타파된 주를 재차 저온처리를 하여 2차 개화를 유도한 결과, 실험에 사용된 전 개체 모두 재맹아하였고 이중 70%인 7개체가 개화가 되었다.