• Korean Journal of Plant Resources
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• v.10 no.1
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• pp.24-29
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• 1997

This study was conducted to evaluate the effect of locations and nursing days on the cstablishment and the first-year growth of Aster scaber seedlings in mountainous areas. Survival rates of the seedlings ranged from 72% in Bukbang to 27% in Mt. Yeonyup B. Survival rate of 90 days-seedlings was 65%. 150days-and 120days- seedling had 2 or 3 leaves but it was almost same as that of native plants. The plants grown in Mt. Yeonyup A averaged 10.7cm high and 90 days-seedlings grew best. Dry weight of plants grown from 120 days- and 90days- seedlings was respectively 215mg and 205mg.

• Journal of Korean Society of Forest Science
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• v.87 no.1
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• pp.50-56
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• 1998

Thirty-six $F_3$ hybrid poplar (Populus trichocarpa${\times}$P. deltoides) clones were fumigated with ozone to select for ozone sensitive and resistant clones. Fumigation was applied for 6 to 8 hours each day for approximately 3 months at ozone concentrations of 90 to 115 ppb using by open-top chambers. Height, diameter, number of leaves, total biomass, biomass components, root/shoot ratios, leaf drop and stomatal response were investigated. In summary, ozone generally reduced height, diameter, number of leaves, total biomass, and root/shoot ratios. Ozone stress induced leaf drop and foliar senescence in trees. This study showed very low relationship between total biomass and stomatal conductance. Increased plant resistant to ozone is not always correlated with stomatal behaviour. Probably, characterization of biochemical and other physiological responses to ozone exposure can provide a better understanding of tree response to ozone environment.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.10a
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• pp.117-117
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• 2018

강황(Curcuma longa L.)은 생강과(Zingiberaceae)에 속하는 다년생 아열대 초본 식물로, 약 40여 종이 존재한다고 알려져 있으며, 특유한 맛과 향기가 있어 세계적으로 널리 이용되고 있다. 현재 국내에는 전남 진도를 중심으로 경남, 제주 등으로 재배지역이 확대되고 있으며, 생산량이 증가하는 것으로 나타나고 있다. 한편, 강황은 우리나라에서 한약재와 식품원료로 구분하여 사용되고 있으며, 한약재 강황은 대한 민국약전을 근거로 규격품 한약재로서 품질관리가 이루어지고 있다. 특히, 국내산 강황은 대한민국약전의 지표성분 함량(쿠르쿠민, 데메톡시쿠르쿠민 및 비스데메톡시 쿠르쿠민의 합 3.2 % 이상)의 기준 규격에 미달되어 대부분 식품원료로 사용되고 있는 실정이다. 따라서, 본 연구는 강황의 비닐하우스 재배를 통해 한약재 활용 가능성을 알아보기 위해 수행되었다. 본 시험은 한약진흥재단 한약자원개발본부 시험포에서 수행되었으며, 강황 종근은 진도 재배 농가를 통해 수집되었다. 2017년 4월 20일에 일반 노지와 비닐하우스에 각각 정식하였다. 수확은 정식 후 200일에 각 실험구의 강황을 채취하여 초장, 엽수, 경경, 경수, 생체중, 건물중 등 생육 특성을 조사하였으며, 쿠르쿠민 함량 분석은 식품의약품안전처 고시법에 따라 HPLC를 이용하여 동시 분석 하였다. 하우스 재배가 강황의 생육에 미치는 영향을 살펴본 결과, 초장은 하우스 재배가 노지 재배에 비해 약 65% 높게 나타났으며, 엽수, 경경, 경수는 약 15~68% 높게 나타났다. 쿠르쿠민 함량은 하우스 재배가 노지 재배에 비해 약 53% 높게 나타났지만, 대한민국약전의 기준 규격에는 미달되었다. 따라서 본 연구 결과는 강황을 비닐하우스에서 재배할 때 생산성과 지표성분을 각각 68%, 53% 증수시켰지만, 한약재로 활용할 수 있는 기준 규격에는 못 미치는 것으로 나타났다. 향후, 강황 해외 지역종 수집 및 재배를 통하여 한약재 품질규격에 적합한 국내산 강황 재배기술 개발을 위한 기초자료로 활용이 가능할 것으로 사료된다.

• Journal of Bio-Environment Control
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• v.12 no.2
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• pp.101-105
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• 2003

This experiment was conducted to find out the effect of day length on the production of high quality plug seedlings in onion (Allium cepa L.). Two cultivars, ‘Changnyongdaego’ and‘Wolryun’, were grown to seedlings in 200-cell plug trays under 11.5, 12.5, 13.5 hours and natural day length. These seedlings were transplanted to the pot (16 cm In diameter) and grown under 16 hours day length. Number of leaves and neck diameter showed better growth in the longer than shorter day length treatments, but plant height old sheath length were retarded in the longer day length treatments. Growth such as no. of leaves, neck diameter, plant height and sheath length increased with the passage of day, but plant height and neck diameter decreased by treatment over 20 days with 13.5 hours day length. Bulbing and bulb size of onion after transplanting were enhanced in the seedlings cultured under longer day lengths. From the above results, treatment of long day length during seedling culture in plug tray can control the overgrowth and produce high quality plug seedlings.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.35 no.6
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• pp.525-531
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• 1990

This study was conducted to find out the effects of nitrogen, potassium application on the plant growth, grain yield and nodule formation of Winged bean. Plant height, number of branches, number of leaves, leaf area, NAR, RGR and CGR increased with basal and top dressing of nitrogen and potassium application. Especially CGR was increased significantly with the added amount of potassium. Number of nodules and nodule dry weight decreased with application of basal and top dressing nitrogen, but increased with the added amount of potassium. Green pod, tuber and grain yield increased with application of basal and top dressing nitrogen, and the added amount of potassium. There appeared positive correlation coefficient between grain yield and growth charateristics, and between grain yield and components. But there showed negative correlation coefficient among yield, number of nodules, dry weight and P$_2$O$\_$5/ contents in leaf.

• Korean Journal of Plant Resources
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• v.26 no.4
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• pp.450-456
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• 2013

We investigated the optimal cultivation system and dry processing method of rhizomes from Curcuma longa L. in Suncheon, the southern area of Korea. The experimental results are summarized as followings. Curcma longa rhizomes were transplanted on Apr. 30th, May 10th, and May 20th. The plant height, stem diameter, number of leaves and yield were highest in transplanted on May 10th. The fresh rhizome weight of Curcma longa was the heaviest in November 20 and the optimal dry temperature was $40^{\circ}C$. In sensory evaluations, there were significant differences among the Curcuma longa pills in terms of flavor, color, color and texture and overall acceptability, and honey added groups received significantly higher scores than the other groups.

• Korean Journal of Environment and Ecology
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• v.18 no.2
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• pp.210-220
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• 2004

The purpose of this study is to propose the raw data of conservation and restoration by analyzing the environmental and growth characteristics in Abeliophyllum distichum habitats. The types of soil were sandy loam, loam and silty clay loam and the correlation on chemical characteristics of soil appeared that T-N and C.E.C were highly correlative. In case of growth characteristics, height and diameter in 1st site, crown in 2nd site, number of leaves in 5th site and number of seeds in 4th site were better than other sites. In the results of correlation on growth characteristics, height and diameter were highly correlative. In case of growth and chemical characteristics, EC and height were highly correlative. In the results of regression analysis, R-square of height and EC was some 70.4％ and that of number of leaves and T-N was some 70.2%. To conserve and restore Abeliophyllum distichum habitats, there were demanded that the accurate environmental analysis that considered such diverse factors as light intensity, temperature, genetic quality and so forth.

• Journal of The Korean Society of Grassland and Forage Science
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• v.12 no.3
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• pp.193-200
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• 1992

This study was carried out to determine the optimum fertilizer level of phosphate for maximum yield of soiling cowpea(Vigna sinensis Endlicher) in Cheju. The results obtained are summarized as follows:1. Plant length, fresh yield, stem and leaf weight per plant, node number of main stem, primary branch number per plant, pod number per plant and pod weight per plant increased with increasing of phosphate level regardless of growth stage.2. Plant length and node number of main stem did not increase after August 25, 40 days after planting. Leaf weight and fresh yield were greatest on August 25, and then reduced. 3. Stem weight the number of leaves and pods and pod weight per plant increased until September 13, 80 days after planting. 4. Increased level of phosphate delayed leaf weight decrease after August 25. 5. Root length and root weight per plant increased with increasing level of phosphate regardless of growth stage, and they did not increase after Augest 25. 6. Nodule number and nodule weight per plant also increased as phosphate rate increased regardlessof growth stage. Nodule number and nodule weight were greatest on August 5, and then rapidly decreased.

• Korean Journal of Plant Tissue Culture
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• v.28 no.2
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• pp.91-95
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• 2001

Propagules grown at different in vitro culture conditions such as heterotrophic, mixotrophic and photoautotrophic conditions were investigated for growth, total photosynthesis ratio and flowering. Survival rate of propagules after transplanting was higher in photoautotrophic propagules than in the heterotrophic and mixotrophic ones. Total photosynthesis was higher plantlets growth in photoautotrophic (154 mg$CO_2$.mgDW$^{-1}$ h$^{-2}$ ) those grown than in mixotrphpic (148 mg$CO_2$.mgDW$^{-1}$ h$^{-2}$ ) and heterotrophic (102 mg$CO_2$.mgDW$^{-1}$ h$^{-2}$ ) 30 days after transplanting into fields. Day to flowering of the plant cultured in photoautotrophic condition was shortened by 7~10 days than those of heterotrophic and mixotrophic ones. Length of the petiole, number of leaves, leaf area and chlorophyll content were also increased.

• FLOWER RESEARCH JOURNAL
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• v.17 no.4
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• pp.256-261
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• 2009

This study was carried out to examine the effects of cutting condition on the rooting and their subsequent growth of cut flower in plug cutting of summer-flowering chrysanthemum 'Iwanohakusen'. The more leaves were attached to the cutting, the higher shoot growth and rooting were. Shoot growth of cuttings was not affected by cutting length, but rooting was better in over 5 cm long cutting. Shoot growth was enhanced by increasing thickness of cutting, and 5.5 mm thick cutting was favored in rooting. When the many leaves were attached on the cutting, the length and weight of cut flower increased. Over 7 cm long cutting showed higher values in growth of cut flower and ray flower number. Cutting of 5.5 mm diameter showed more favorable growth of cut flower than the other treatments. Therefore, it is concluded that rooting of cutting and consecutive growth of cut flower was improved when 7 cm long and 5.5 mm diameter cutting with 4 leaves was used in plug cutting of chrysanthemum 'Iwanohakusen'.