• Journal of Bio-Environment Control
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• v.19 no.4
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• pp.275-283
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• 2010

This study was conducted to examine the changes in growths of tomato and watermelon seedlings and the relationship among growth parameters which are used to evaluate healthy seedling as affected by shading. Plants were grown under 0%, 25%, 50%, and 75% shadings using polyethylene films. Leaf area index (LAI) of tomato and grafted watermelon seedlings increased under 50% and 75% shading. Total dry weight decreased with increase of shading level. The growth rates of stem diameter, LAI, total weight were faster under 50% and 75% shading with increase of integral radiation than under 0% and 25% shading. Stem diameters of tomato and grafted watermelon seedlings showed no significant differences among shading regimes. Stem diameters of tomato seedlings had upward tendency with increase of total dry weight and shoot height, but there were no significant differences among shading regimes. Stem diameters of grafted watermelon seedlings had no relationship with shoot height. These results indicate that stem diameter of tomato seedlings is not appropriate for assessing seedlings quality but stem diameter of grafted watermelon seedlings with shoot height is available.

• Journal of Life Science
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• v.15 no.1 s.68
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• pp.132-135
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• 2005

This experiment was performed to obtain the basic information on heterosis and heterobeltiosis of quantitative characters in the eggplant by crossing of varieties. The heterosis and heterobeltiosis were estimated in Fl generation. The results were as follows, based on the graphical analysis, the characters, plant height, stem diameter, fruit weight, leaf length, leaf width, and fruit number per plant(yield) were assumed to inherit dominance, and fruit length and fruit diameter were found to inherit incomplete dominance. The degree of positive heterosis of plant height, stem diameter, fruit weight, fruit length, fruit diameter, leaf length, leaf width, and fruit diameter, leaf width, leaf length, fruit weight, and stem diameter showed negative heterobeltiosis.

• Journal of Bio-Environment Control
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• v.32 no.1
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• pp.15-22
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• 2023

Roses are one of the most produced flower species in the world, and cut roses are produced in the greenhouses all year round. Recently, due to the increase in the temperature in the greenhouses in summer, the quality of cut roses is seriously deteriorated, such as shortening the stem length. This study was conducted to investigate the effects of the growing seasons on the qualities of cut roses and also to test the effect of cooling at night in high temperature season on the cut flower qualities of roses. Comparing the qualities and yields of cut roses for each season, the major cut flower qualities such as flower stem length, stem diameter and fresh weight were statistically significantly decreased in roses ('Pink Beauty' and 'Pink Shine') produced in summer. The yields didn't show a statistically significant difference in both cultivars. Investigating the cut flower qualities, the flower stem length increased by 15% for 'Pink Beauty', 11% for 'Ararat', and 12% for 'Pink Shine' when treated with cooling at night in warm season than the untreated control. In addition, when treated with cooling at night in warm season, the fresh weight of all three cultivars increased by 20-30% statistically significantly than conventionally cultivated control. It is expected that cooling at night in warm season will be helpful to improve the cut flower quality deterioration in summer.

• Journal of the Korean Society of Radiology
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• v.83 no.3
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• pp.705-711
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• 2022

A 46-year-old male with alcoholic liver cirrhosis underwent a transjugular intrahepatic portosystemic shunt (TIPS) for refractory ascites. On the 9th day after the procedure, he presented with melena and decreasing hemoglobin levels. Hemobilia due to fistula formation between the right intrahepatic bile duct and right hepatic artery was suspected on computed tomography. Angiography revealed a fistula of the small branches of the hepatic segmental arteries, and right intrahepatic bile duct was confirmed; embolization was successfully performed with a coil for the eighth segmental hepatic artery, a glue-lipiodol mixture for the fifth segmental hepatic artery, and gelfoam slurry for the right anterior hepatic artery. However, 2 days after embolization, the patient died owing to aggravated disseminated intravascular coagulopathy. When gastrointestinal bleeding occurs after TIPS, careful evaluation is immediately required, and hemobilia should be considered.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1998.10a
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• pp.142-145
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• 1998

근권용량을 2, 4, 6, 8 및 10$\ell$로 제한하여 펄라이트를 채워 오이를 재배한 결과 근권용적이 증가할수록 초장, 경경, 엽수 및 엽면적이 증가하였고, 과실수와 과실중량에서는 근권용적이 큰 8$\ell$와 10$\ell$의 처리구에서 가장 양호하였으며 기형과 발생률도 낮은 경향이었다. 근권용적 6$\ell$를 기준으로 미만의 처리구에 비해 이상의 처리구에서 경으로의 건물분배가 줄어들고 엽으로의 건물분배가 많은 것을 볼 수 있었다.

• 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.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1998.10a
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• pp.146-150
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• 1998

초장과 엽수에 있어서는 별도의 배수판을 설치한 Bio-2처리구에서 높게 나타났고 fan을 이용한 강제환기를 시킨 Fan처리구에서는 낮게 나타났다. 경경과 엽면적에 있어서는 무통기처리구인 대조구에서 높게 나타난 반면 경경에 있어서는 Fan처리구와 배수구 통기구인 Bio-1처리구는 생육후기에 있어서 크게 차이가 나지는 않았으나 본 실험에서는 낮게 나타났다. 엽면적은 Fan처리구가 가장 낮게 나타났다. fan을 설치하여 강제환기를 시킨 Fan처리구가 과실수량과 과중, 과장에 있어서는 다른 처리구에 비해 높게 나타났고 무통기구인 대조구가 가장 낮았다. 전반적인 생육이나 과실수량 및 과실품질에 있어서는 근권의 수분함량비율이 비교적 안정적인 Bio-2처리구가 가장 좋은 것으로 나타났다.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1999.11a
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• pp.192-195
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• 1999

작물은 생육단계에 따라 양분의 흡수특성이 다르기 때문에 생육단계별로 적정 양액농도를 구명해야만 영양생장과 생식생장이 병행된 과채류에 있어서 균형을 유지할 수 있다. 노 등(1995)은 토마토의 펄라이트경 양액재배시 육묘기 때에 양액농도를 EC 0.5mS/cm에서 3.0mS/cm로 높임에 따라 유묘의 광합성속도가 증가하였으나 그 이상의 범위에서는 오히려 감소하였으며, 초장, 엽장, 엽폭, 경경 및 지상부 건물중은 양액농도를 0.5mS/cm에서 5.0mS/cm로 높임에 따라 계속 증가한다고 보고하였다. (중략)

• Journal of agriculture & life science
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• v.45 no.6
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• pp.9-19
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• 2011

This study aimed to investigate the effect of night temperature on tomato and grafted watermelon seedlings, particularly, shoot height, leaf area, stem diameter, and total dry weight and relationship among the growth parameters which are used to evaluate healthy seedling. Plants were grown at 10, 15, and $20^{\circ}C$. Leaf area index (LAI) and total dry weight of tomato seedlings weight deceased more significantly under $10^{\circ}C$ than other night temperature regimes. In grafted watermelon seedlings, shoot height increased shapely and stem diameter decreased under $20^{\circ}C$. Increasing the integral temperature, leaf area of tomato seedlings under $10^{\circ}C$ decreased and shoot height of grafted watermelon seedlings increased although temperature integrals are same. The relationships among the growth parameter were changed upon the night temperature. Stem diameters of tomato seedlings had upward tendency with increase of shoot height, but there were no significant differences among night temperature regimes. Shoot hight of grafted watermelon seedlings had no relationship with shoot height. These results indicate that shoot height and stem diameter of tomato seedlings is not appropriate for assessing seedlings quality but shoot height of grafted watermelon seedlings with stem diameter is available.

• Journal of Bio-Environment Control
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• v.31 no.3
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• pp.194-203
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• 2022

Cultivation of tomatoes in Korea grown in soil covers 89% of the total area for tomato cultivation. Tomatoes grown in soil often encounter various environment stresses including not only salt stress and soil-borne diseases but also cold stress in the winter season. This study was conducted to comparatively analyze the performance of rootstocks with cold stress by measuring the growth, yield, and photosynthetic efficiency in tomatoes grown in soil. The rootstocks were used 'Powerguard', 'IT173773', and '20LM' for the domestic rootstock cultivars and 'B-blocking' for a control cultivar. The tomato cultivar 'Red250' was used as the scion and the non-grafted tomatoes. Stem diameter, flowering position, leaf length, and leaf width were investigated for the growth parameters. The stem diameter of the non-grafted tomatoes decreased by 15% compared to the grafted tomatoes at 80 days after transplanting when exposed to low temperatures of 9-14℃ for 14 days. The leaf length and width of the non-grafted tomatoes were the lowest with 42.4 cm and 41.8 cm at 80 days after transplanting. The total yield per plant was the highest in tomato plants grafted on 'Powerguard' with 1,615 g and lowest in non-grafted tomatoes with 1,299 g. As the result of measuring the chlorophyll fluorescence parameters, PI_ABS and DI₀/RC, which mean the performance index and dissipated energy flux, 'Powerguard' was the highest with 3.73 in PI_ABS and the lowest with 0.34 in DI₀/RC, whereas non-grafted tomatoes was the lowest with 2.62 in PI_ABS and the highest with 0.41 in DI₀/RC at 80 days after transplanting. The stem diameter has positive correlation with PI_ABS, while it has negative correlation with DI₀/RC. The results indicate that can be analyzed by chlorophyll fluorescence parameters can be used for analyzing the differences in the growth of tomato plants grafted on different rootstocks when exposed to cold stress.