• Proceedings of the Korean Environmental Sciences Society Conference
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• 2008.11a
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• pp.559-561
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• 2008

본 연구는 저토심 저관리를 목적으로 한 옥상녹화시스템에 각시둥글레와 흰줄무늬사사를 식재한 후, 식물생육과 토양수분함량의 평가를 통해 적정 토양배합비와 토심을 추출하고자 실시하였다. 흰줄무늬사사의 경우, 적은 개체로도 높은 피복율을 나타냈으며, 7cm 실험구를 제외한 모든 실험 구에서 양호한 생장량을 보였다. 특히, 배합비율 6:2:2 실험구에서 초장, 근원직경, 엽폭, 엽길이, 엽병길이, 착엽수 모두 가장 높게 나타났다. 각시둥글레는 높은 고사율을 보여 옥상녹화에는 적합하지 않은 것으로 나타났다.

• Journal of Bio-Environment Control
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• v.29 no.1
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• pp.1-8
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• 2020

The influence of growth regulators (NAA and BA) and sucrose concentrations (0, 3, 5, 7, 9%) on in vitro rapid-propagation of virus-free sweet potato [Ipomoea batatas (L.) Lam.] was investigated with single-node or shoot-tip culture of two cultivars ('Matnami' and 'Shinhwangmi'). The survival rate and growth of shoot-tip explant was also investigated under the presence or absence of light (blue and red LED = 7:3, 150±5 μmol·m^-2·s^-1 PPFD) during minimal-growth in vitro conservation at 15℃. Vine length, vine diameter, fresh weight and dry weight were enhanced without callusing of explant in the MS medium supplemented with 0.2-0.5 mg·L^-1 BA. The growth of single-node and shoot-tip explants were significantly enhanced with the increase of vine length, number of leaf, number of root, fresh weight, and dry weight in the solid medium containing 5% sucrose and 0.2 mg·L^-1 BA. Vine elongation of shoot-tip explants were highest in the liquid medium containing 3% sucrose than the solid medium. The survival rate of minimal-growth in vitro conservation was 100% in 5 months under the presence of light (LED, 150±5 μmol·m^-2·s^-1 PPFD) at 15℃, but the explants in dark condition died in 3 months. The light was absolutely necessary for the in vitro conservation under minimal-growth conditions of virus-free sweet potato plantlets at 15℃, and the high density of explants (10 plantlets per Petri Dish) was increased the efficiency of mass conservation.

• Journal of Korean Society of Forest Science
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• v.101 no.2
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• pp.317-323
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• 2012

This study was performed in order to explore the growth characteristics by growing stage in the containerized seedling and the bare root seedling of Chamaecyparis obtusa Sieb. et Zucc., which is the major plantation species of Korean southland. The height growth of 1-year-old bare root seedlings was better than containerized seedlings, which grew in the containers with capacity of 31.2 mL and 300 mL. The root collar diameter growth was the best in the containerized seedlings of container with 300 mL. The 2-year-old bare root seedlings were surveyed to be better in the height and root collar diameter growth than the containerized seedlings of container with 300 mL. In the comparison of dry mass production, it was the highest in 32 mL containerized seedlings as for 1-year-old above ground and in 300 mL containerized seedlings as for below-ground and total dry mass production. In case of 2-year-old seedlings, it was indicated to be high in bare root seedling as for the part above ground and in dry mass production of the containerized seedling as for the part below ground. In the comparison on root morphological traits of seedlings such as the total root length, the root project area, the root surface area, the average diameter in root, and the root volume, all of 1 and 2-year -old containerized seedlings showed the higher growth than the bare root seedlings except the average diameter in root. Synthesizing the results of this experiment, the containerized seedlings are relatively excellent in root development compared to bare root seedlings in the process of producing seedlings of C. obtusa, thereby being judged to have grown into excellent seedlings.

• Korean Journal of Medicinal Crop Science
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• v.14 no.4
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• pp.244-249
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• 2006

This study was carried out to determine leaf photosynthetic capacity and growth characteristics of Kalopanax picturs Nakai seedlings under the different light condition. The seedlings grown under low light condition showed larger leaf area and petiole, and higher relative growth rate than those grown under high light condition. Chlorophyll contents as chlorophyll a, chlorophyll b, and chlorophyll a + b were high in the seedlings grown under highlight condition compared to those grown in low light conditions. The mean absorption value of shade leaf within photosynthetically active radiation (400-700 nm) was slightly higher than that of sun leaf, Leaf photosynthetic capacity of seedling was variable under the different light conditions. Seedling grown under high light condition had the higher photosynthetic capacity. Leaf photosynthetic rates under forestry and nursery were 700 and $300\;{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$, respectively. However, leaf photosynthetic rates under high and low light conditions were 500 and $300\;{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$, respectively.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.02a
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• pp.180-185
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• 2002

본 연구에서는 선행연구에서 개발한 식물공장 시스템을 확장하여 가상의 식물공장을 설계하고 운영하는 시뮬레이션을 수행하였으며 그 결과는 다음과 같다. 1. 식물공장의 개별 장치들의 성능과 크기에 관한 수학적 모델을 구하였으며 작물의 로지스틱 생장 모델에 따라 재배장치를 배열하였다. 2. 동일조건 하에서 여러 가지 변수를 변화시키며 식물공장의 면적, 재배장치의 길이 등을 시뮬레이션 해보았으며 또한 식물공장의 연간 고정비 및 소득도 비교했다. 3. VRML을 이용하여 3차원 컴퓨터 그래픽을 이용한 가상의 식물공장을 만들어 사용자가 가상현실 속에서 둘러볼 수 있었으며, 가상 식물공장은 인터넷을 통해 WWW으로 제공할 수 있었다.

• Journal of the Korean GEO-environmental Society
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• v.14 no.8
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• pp.29-35
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• 2013

The objective of this research was to investigate the effect of various clay materials on the growth and change in mineral composition of soybean sprout. Further effect of sericite concentration on growth of soybean sprout was optimized. The experiments were carried by using three different viz., loess supernatant, tap water and sericite supernatant. From the obtained results it was found that a significant growth in soybean sprouts was observed while using sericite supernatant this growth was 14.71% and 50% more total growth than that of loess supernatant and tap water. In addition, using sericite supernatant the length of root of soybean sprouts was reached 17.30% and 36.50% longer than that of tap water and loess supernatant. The plausible reason for this growth using sericite supernatant may be due to the presence of various mineral($K^+$, $Ca^+$) in sericite. Further the mineral contents of sericite supernatant were 11.56% and 13.48% more than that for loess supernatant and tap water. Among the various sericite concentration used it was found that 100g/L sericite supernatant showed significant growth rate compared with other fractions. From the obtained results comparing with all materials 100g/L sericite concentration was economic for the cultivation of soybean sprout.

• Journal of Bio-Environment Control
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• v.18 no.4
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• pp.481-491
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• 2009

This study was conducted to observe some characteristics of aneuploid trees obtained from the crosses between diploid and triploid in the first experiment. The results showed that the difference among the percentage of aneuploid's pollen grain germination was large, and all of them were lower than that of diploid 'Hongro' (82.4%). The average weight and size of each aneuploid's fruit was far lighter and smaller than that of diploid 'Hongro'. According to the width and length, all of the fruits shape was flat or short-globose conical shape except for JF3942. Almost all the aneuploid had higher sugar content than 'Hongro', nearly half of aneuploid fruits were firmer than that of diploid 'Hongro'. As for the acid contents of aneuploid fruits, the results were greatly different from those of previous studies on diploid apples, in present study the citric acid and tartaric acid contents were more than the malic acid which are dominant acid in most cultivars of apples. Both the length and width of aneuploid tree were shorter than that of diploid 'Hongro'. Most aneuploid trees' height was longer than width, but there were 4 exceptions. The size of leaves was smaller than that of diploid 'Hongro' according to the length and width of leaves measured. In all, aneuploid's vegetative growth is not as vigorous as diploid.

• Korean Journal of Environmental Agriculture
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• v.33 no.4
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• pp.372-380
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• 2014

BACKGROUND: This study was carried out in order to closely examine the influence of fertilization upon growth in container of seedling in indeciduous Quercus species (Q. mysinaefolia, Q. acuta and Q. glauca). METHODS AND RESULTS: Fertilizer level was made by adjusting water soluble compound fertilizer (N:P:K=19: 19:19, v/v) to 1000, 2000, $3000mg{\cdot}L^{-1}$ level along with non-fertilizing plot. Fertilization increased height, root collar diameter growth, and dry weight in these three species of trees. The more increase in fertilizer level led to the more rise even in growth of these species. H/D ratio and T/R ratio also showed tendency of getting bigger in the more rise in fertilizer level. Photosynthetic rate was shown to get higher in the higher fertilizer level according to fertilization in all the three species. In the analysis of root morphological traits, the total root length was surveyed to be longer in the more rise in fertilizer concentration. As even a case of root project area, surface area, and root volume is the similar tendency to characteristics in the total root length, a rise depending on fertilization was observed. CONCLUSION: In light of the results in this experiment, the fertilizer level is judged to be $2000mg{\cdot}L^{-1}$ level that is proper for production of 1-year-old container seedling in indeciduous Quercus species with excellent root development and high seedling quality index.

• Asian Journal of Turfgrass Science
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• v.12 no.3
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• pp.173-182
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• 1998

This study was conducted to evaluate the effect of plant growth inhibitors on "Penncross" creeping bentgrass in the green of golf course for increasing the summer quality. Chlormequat chloride (C) 250$\times$, 500$\times$, 1000$\times$, daminozide (D) 50$\times$, 100$\times$, 200$\times$, paclobutralzol (P) 1000$\times$, 2000$\times$, 4000$\times$, trinexpac-ethyl (T) 1000$\times$, 2000$\times$, 4000$\times$, uniconazole (U) 25$\times$, 50$\times$, 100$\times$ with three concentrations, respectively, were applied to creeping bentgrass. The leaf length, leaf width, and internode length of stolon were inhibited by all plant growth retardants applied as compared to that of control in which D-50, T-2000, and trinexpac-ethyl were the most effective among treatments on the inhibition of leaf length and internode length of stolen, respectively. Leaf thickness increased more in the treatments of C-250, D-50. T-2000 and T-4000 than any other treatments. On the other hand, shoot density which was represented by number of leaves per unit area was found to be the highest in P-2000 and P-4000 treatment. In this case, all plant growth retardants with no significant differences showed increase of 15-20% in density as compared to control. Total dry weight increment was higher in P-2000 and P-4000 while leaf dry weight increment was higher in T-4000. and U-25 and 50 than other treatments. According to the visual evaluation for the purpose of turf quality measurement, it was found that paclo-butralzol, trinexpac-ethyl and uniconazole were not suitable for green maintenance and extension because of making leaves to yellow. In conclusion, it was postulated that C-250, D-50, and T-4000 had possibility to use practically in the green area of golf course.lf course.

• Applied Biological Chemistry
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• v.43 no.4
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• pp.266-270
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• 2000

Using the filtrate of loess suspension, we cultivated soybean sprouts and investigated its effect on growth and quality in soybean sprouts. In comparison with soybean sprouts cultivated by tap water, the soybean sprouts cultivated by the filtrate of loess suspension at $20^{\circ}C$ showed increases in its weight by 11.4% and length by 14.9%. When cultivated at $25^{\circ}C$, the soybean sprouts by filtrate of loess suspension also showed increases in its weight by 9.9% and length by 11.0%. We compared inorganic element contents and pH level between the filtrate of loess suspension and tap water. Contents of Ca, Mg, K, Na, Zn, Mn, and Cu did not show any difference, while only P was higher in the tap water. pH value did not show much difference either. Consequently, it seemed that inorganic element contents and pH in the filtrate of loess suspension did not give any effect on the growth of the soybean sprouts. And also there was no any significant difference in inorganic element and amino acid contents in two kinds of soybean sprouts. However in a sensory test, the color and overall acceptability of the soybean sprouts cultivated by the filtrate of loess suspension showed better than the soybean sprouts cultivated by the tap water.