• Agribusiness and Information Management
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• 제6권1호
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• pp.1-11
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• 2014

The purpose of this study is to develop the growth prediction model that can predict growth and development information influencing on the production of citrus fruits. The growth model was developed to predict the floral leaf ratio, number of fruit sets, fruit width, and overweight fruits depending on the main period of growth and development by considering the weather factors because the fruit production is influenced by weather depending on the growth and development period. To predict the outdoor-grown citrus fruit production, the investigation result for the standard farms is used as the basic data; in this study, we also understood that the influence of weather factors on the citrus fruit production based on the data from 2004 to 2013 of the outdoor-grown citrus fruit observation report in which the standard farms were targeted by the Agricultural Research Service and suggested the growth and development information prediction model with the weather information as an independent variable to build the observation model. The growth and development model for outdoor-grown citrus fruits was assumed by using the Ordinary Least Square method (OLS), and the developed growth prediction model can make a prediction in advance with the weather factors prior to the observation investigation for the citrus fruit production. To predict the growth and development information of the production of citrus fruits having a great ripple effect as a representative crop in Jeju agriculture, the prediction result regarding the production applying the weather factors depending on growth and development period could be applied usefully.

• Journal of Biosystems Engineering
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• 제42권4호
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• pp.276-282
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• 2017

Purpose: This paper presents the effects of soil drought stress during the growing season and pre-harvest period on tree growth and fruit quality of "Yumi" peach, an early season cultivar. Methods: Soil drought stresses were treated with four levels of -30, -50, -60, and -70 kPa during long term (LT) and short term (ST). For LT treatments, soil water was controlled for nine weeks from May 1 to July 5, which was assumed as the full growing season. For ST treatments, soil water was controlled for four weeks from June 10 to July 5, which was assumed as the pre-harvest season. Tree growth and leaf photosynthesis were measured, and fruit characteristics such as fruit weight and diameter, soluble solid and tannin contents, and harvest date were investigated. Results: Soil water deficit treatments caused a significant reduction in tree growth, leaf photosynthesis, and fruit enlargement. LT water stress over -60 kPa during the full growing season caused significant reduction in tree growth, including shoot length, trunk girth, leaf photosynthesis, and fruit enlargement. ST water stress over -60 kPa during the pre-harvest period also induced significant reduction in leaf photosynthesis and fruit enlargement, while tree growth was not reduced. In terms of fruit quality, water stress over -50 kPa significantly reduced fruit weight, increased soluble solid and tannin contents, and delayed harvest time in both LT and ST treatments. Conclusions: As a result, it is assumed that LT water stress over -60 kPa can reduce both tree growth and fruit enlargement, whereas ST water stress over -50 kPa can reduce fruit enlargement without reducing tree growth. From an agricultural perspective, moderate water deficit like -50 kPa treatments could have positive effects, such increased fruit soluble solid contents along with minimal reduction in fruit size.

• Agribusiness and Information Management
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• 제7권1호
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• pp.1-9
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• 2015

The purpose of this study is to develop a growth prediction model that can predict growth and development information influencing the production of citrus fruits: the growth model algorithm that can predict floral leaf ratio, number of fruit sets, fruit width, and overweight depending on the main period of growth and development with consideration of the applied weather factors. Every year, large scale of manpower was mobilized to investigate the production of outdoor-grown citrus fruits, but it was limited to recycling the data without an observation supporting system to systemize the database. This study intends to create a systematical database based on the basic data obtained through the observation supporting system in application of an algorithm according to the accumulated long term data and prepare a base for its continuous improvement and development. The importance of the observed data is increasingly recognized every year, and the citrus fruit observation supporting system is important for utilizing an effective policy and decision making according to various applications and analysis results through an interconnection and an integration of the investigated statistical data. The citrus fruit is a representative crop having a great ripple effect in Jeju agriculture. An early prediction of the growth and development information influencing the production of citrus fruits may be helpful for decision making in supply and demand control of agricultural products.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2022년도 추계학술대회
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• pp.101-101
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• 2022

Schisandra chinensis is a fruit which is called Omija in South Korea. The Korean word Omija means "five flavors" (sweet, spicy, sour, bitter, and salty). The aim of his study was to investigate the correlation between growth characteristics and lignans (gomisin A, gomisin N, schisandrin) contents of Schisandra chinensis. The method for determining lignans was validated by measuring the linearity, limit of detection (LOD), limit of quantification (LOQ), precision and accuracy using UPLC-UV. Growth characteristics of S. chinensis such as number of fruits per fruit bunch, length of fruit bunch, width of fruit bunch, fresh weight of fruit bunch, length of fruit, width of fruit, fresh weight of fruit, fresh weight of 30 fruits, and sugar contents of fruit were measured. From the results of correlation analysis, it was found that the contents of lignans showed a significantly negative correlation with fresh weight and sugar contents of fruit. These results will be used to study for quality control of S. chinensis fruit.

• 생물환경조절학회지
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• 제15권4호
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• pp.358-363
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• 2006

대목의 종류가 참외의 생장, 비대 및 품질에 미치는 영향을 검토한 결과는 다음과 같다. 참외 지상부의 생육은 자근묘에 비하여 접목묘에서 생육이 빨랐으며, 접목묘 중에서는 홍토좌 보다는 엘리트, 신토좌에서 우수하였으며, 초장, 엽수 등 생육은 정식 30일 후부터 급격한 신장을 보였다. 과장과 과폭의 비대속도는 대목종류간에는 큰 차이가 없었다. 과실의 품질을 조사한 결과 자근묘에 비하여 세력이 강한 엘리트, 신토좌접목묘에서 과중은 무거웠으나, 당토는 엘리트 접목묘 $12.5^{\circ}Brix$에 비하여 자근묘에서 $1.4^{\circ}Brix$ 더 높았다.

• 문화기술의 융합
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• 제4권3호
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• pp.253-259
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• 2018

떫은감 자원은 전통적으로 다방면의 여러 조직학적 질병을 치료하고 모발 성장을 비롯한 다양한 생물학적 활성에 매우 높은 효과가 있음이 알려져 왔다. 본 연구는 대머리 패턴의 검은 쥐 모델에 유전적으로 입증된 떫은감 추출물에 대한 발모 및 탈모방지 효능을 알아보고자 하였다. 표준화된 제형을 사용하여 대조군, 떫은감 추출물(10 mg/mouse/day)과 양성대조군인 미녹시딜(2 %)을 매일 두번씩 모발이 성장할 때까지 매일 등 피부에 일정량씩 도포 투여하여 조사하였다. C57BL/ 6 Black 쥐에서 모발 성장 세대를 통해 모발 성장의 변화 패턴이 관찰되었다. 모발 존재 면적과 모발의 길이는 처리 대조군 마우스 보다 떫은감 처리 마우스 처리구에서 유의하게 증가 하였다 (P>0.001). 또한 조직학적 평가에서도 대조군과 비교하여 떫은감 추출물의 처리구에서 모낭세포의 숫자가 현저하게 증가하였다. 따라서 본 실험 결과를 통하여 떫은감 추출물을 피부 도포시 누드 마우스의 모발 성장을 촉진하고 모발의 존재 영역을 확장시키고 모발 길이를 증가시켜 장기 모발 성장기의 지표가 될 수 있음을 알 수 있었다.

• 한국약용작물학회지
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• 제25권3호
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• pp.160-164
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• 2017

Background: This study were performed to determine the effect of root pruning of Zizyphus jujuba var. inermis (Bunge) Rehder. Root cutting inhibit vegetative growth and promote reproductive growth as temporarily reducing growth, net assimilation, water potential of leaf and cytokinin level. Methods and Results: The root pruning was treated of the root cutting widths 50, and 80 ㎝ and the root cutting depths 10, and 20 cm. The amount of root pruning and the number of suckers were the highest in the root-pruning treatment at a width of 50 cm and a depth of 20 cm. The blooming time was from June 18 to 20, and no difference was observed in the blooming time among the root-pruning treatments. The number of flowers was rather higher in the root-pruning treatment at a width of 50 cm and a depth of 20 cm and at a width of 80 cm and a depth of 20 cm. The percentage of fruit setting was higher in the plants whose roots were pruned at a depth of 20 cm than in the untreated plants. The fruit size, fruit weight, and sugar content showed no difference among the root-pruning treatments. Conclusions: The results showed that percentage of fruit setting increased with root pruning, while no difference was observed in the growth and fruit quality of plants.

• 생물환경조절학회지
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• 제10권2호
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• pp.69-74
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• 2001

본 연구에서는 참대라 과실의 생장을 직경 43mm와 52mm의 아크릴파이프 처리로 억제시켜, 과실 생장에 따른 과실조직의 수분 함량과 건물중 변화에 대한 과실의 전당 및 전분 농도를 조사하였다. 과실의 생체중, 건물중과 수분 함량은 파이프 처리에 의해 감소하였으나, 과실이 비대함에 따라 일정한 비율로 증가하였다. 직경 43 mm 아클릴파이프처리 과실은 과실 생장 제3기 동안 수분 함량 증가가 정지되었고 과실의 수확기 적기에는 건물률이 다른 처리보다 높았다. 당농도는 아크릴파이크 처리의 과실에 있어, 일시적으로 증가한 후에 무처리 과실의 농도까지 감소하였다. 그때에 전분 농도와 건물률은 처리간에 차이가 없었다. 그러므로, 아크릴파이프로 처리로 과실의 비대가 억제된 과실의 당 농도는 과실의 수분함량 감소에 따른 것으로 생각되었다.

• 한국식품과학회지
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• 제13권3호
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• pp.233-240
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• 1981

합성배지를 이용한 팽나무 버섯균(菌)의 균사생육(菌絲生育)과 자실체(字實體) 형성에 대한 영양적 특성을 실험한 결과를 요약하면 다음과 같다. 1. 당질(糖質)중에서는 만니톨이 균사생육(菌絲生育)과 자실체 형성이 빠르고 자실체(字實體) 수량이 제일 많았으며, 유기산(有機酸)중에서는 숙신산에서만 자실체(字實體)가 빈약하게 형성되었고 에틸알콜과 글리세롤에서는 비교적 자실체(字實體) 형성도 빠르고 그 수율(收率)도 높았다. 2. 질소원(窒素源)중에서는 펩톤이 균사생육(菌絲生育)과 자실체(字實體) 형성이 빠르고 자실체(字實體)의 수량도 많았으며, 아미노산중에서는 glycine이 자실체(字實體) 형성도 빠르고 그 수율(收率)도 높았다. 아질산태(亞窒酸態) 질소(窒素)와 lysine, methionine은 균사(菌絲)도 생육하지 않았다. 3. 펩톤과 만니톨의 농도가 낮을수속 자실체(字實體) 형성(形成)은 늦으나 수율(收率)은 적었으며 농도가 높을수록 자실체(字實體) 형성은 늦으나 그 수율(收率)은 증가되는 경향을 보였다.

• 한국균학회지
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• 제11권3호
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• pp.121-128
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• 1983

합성배지(合成培地)에서 고온성(高溫性) 느타리 버섯균(菌)의 균사생육(菌絲生育)과 자실체형성(子實體形成)에 관한 영양적(營養的) 특성(特性)과 생리화학적(生理化學的) 성질을 검토한 결과를 요약하면 다음과 같다. 1. 균사생육(菌絲生育)과 자실체형성(子實體形成)이 우수한 당류(糖類)는 mannitol과 sucrose이었고 arabinose, lactose, inulin은 균사생육(菌絲生育)이 빈약할 뿐만 아니라 자실체(子實體)가 형성(形成)되지 않았으며 mannitol의 최적 온도(溫度)는 2%였다. 2. 질소원(窒素源)중에서 peptone이 균사생육(菌絲生育)과 자실체형성(子實體形成)이 빠르고 자실체(子實體)의 수량(收量)이 많았으며 아질산태(亞窒酸態) 질소(窒素)는 저해적이었다. peptone의 최적 농도(濃度)는 0.2%이었다. 3. 균사생육(菌絲生育)과 자실체형성(子實體形成)이 우수한 Vitamin은 thiamine과 folic acid이었고 $KH_2PO_4$와 $MgSO_4{\cdot}7H_2O$의 최적 농도(濃度)는 각각 0.2%와 0.02%이었으며 그 밖의 무기염류(無機鹽類)는 효과가 없었다. 4. 광조도(光照度)는 $100{\sim}500\;lux$, 균사생육(菌絲生育) 온도(溫度)는 $25^{\circ}C$, 자실체형성(子實體形成) 온도(溫度)는 $20^{\circ}C$, pH는 6.0에서 균사생육(菌絲生育)과 자실체형성(子實體形成)이 우수하였다.