적화제 및 적과제가 ‘감홍’ 사과의 착과와 과실 품질에 미치는 영향

유진기(Jingi Yoo),강봉국(Bong Kook Kang),김대현(Dae Hyun Kim),이진욱(Jinwook Lee),이동훈(Dong Hoon Lee),권헌중(Hun-Joong Kweon),최인명(In Myung Choi),정희영(Hee Young Jung),정명근(Myoung-Gun Choung),최동근(Dong Geun Choi),강인규(In-K 한국원예학회 2016 원예과학기술지 Vol.34 No.1

본 연구는 2년에 걸쳐 ‘감홍’ 품종에 석회유황합제(Lime sulfur), MaxCel(1.9% BA), Fruitone(3.5% NAA)을 처리하여 적과와 과실품질에 미치는 영향을 조사하였다. 1차년도 약제 처리에 의한 과총당 착과수는 석회유황합제 3회 처리구는 0.82개, MaxCel(10mm) 처리구 역시 1.15개로 무처리구 1.74개에 비해 유의하게 적어 적과 효과가 인정되었다. 과총당 과실의 착과수는 석회유황합제 또는 MaxCel(10mm) 처리 시 단일과 착과율이 각각 47.9%와 48.7%로 무처리 36.0%에 비하여 높았고, 3개 이상 과실 착과율이 각각 1.4%와 5.8%로 무처리 22.9%에 비해 낮아 좋은 적과 효과를 보였다. 액화아의 경우 석회유황합제 및 MaxCel(10mm) 처리구 0.36개와 0.50개로 무처리구 1.20개에 비하여 낮아 정화아에서와 비슷하게 우수한 적과 효과를 보였다. 2년차 적과 효과는 무처리를 제외한 모든 처리구에서 높은 적과 효과를 보였고, 약제 처리가 과실품질에 미치는 영향은 없었다. 따라서, 석회유황합제 또는M axCel 혼용처리보다 단용처리만으로도 착과수를 감소시키는데 효과가 있었다. This study investigated the effects of flower and fruit thinning agents on fruit set and harvested fruit quality attributes in ‘Gamhong’ apples. Lime sulfur, MaxCel (1.9% BA), and Fruitone (3.5% NAA) were applied either at post-bloom or fruitlet stages to mature ‘Gamhong/M.9’ trees. In 2011, the numbers of fruits per cluster in terminal flowers were 1.74, 0.82, and 1.15 for the control, lime sulfur, and Maxcel (applied at 10-mm fruit stage) treatments, respectively. The percentages of single fruit per cluster were 36.0, 47.9, and 48.7% for the control, lime sulfur, and Maxcel (10 mm) treatments, respectively, while the percentages of clusters with three fruits per cluster were 22.9, 1.4, and 5.8%. In lateral flowers, fruit numbers per cluster were 1.20, 0.36, and 0.50 for the control, lime sulfur, and Maxcel (10 mm) treatments, respectively. In 2012, all the thinning treatments showed a positive effect on flower and fruit thinning, compared with the control. Moreover, the treatment with thinning agents did not affect fruit quality. Overall, the results suggest that a single application of flower or fruit thinning agents would be sufficient, rather than the mixed application of thinning agents, based on the observed decrease in fruit setting.

An Observation Supporting System for Predicting Citrus Fruit Production

Hee Joo Kang,Seung Tae Yoo,Young Jin Yang 한국농식품정보과학회 2015 Agribusiness and Information Management Vol.7 No.1

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.

An Observation Supporting System for Predicting Citrus Fruit Production

Kang, Hee Joo,Yoo, Seung Tae,Yang, Young Jin Korean Society of Food and Agricultural Informatio 2015 Agribusiness and Information Management Vol.7 No.1

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.

Effects of Plant Growth Regulator Types, Concentrations, and Application Dates on Fruit-set, Quality, and Yield of Melon Cultivars in Low Temperature Cultivation

Dong-Kum Park,Yun-Chan Huh,Sung-Min Choi,Won-Byoung Chae,Kyoung-Sub Park 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

가온 하우스의 망고 ‘Irwin’ 열매솎이(엽과비)에 따른 과실품질, 활성산소 소거활성 및 폴리페놀 함량 비교

한상헌,조재중,강연구 제주학회 2020 濟州島硏究 Vol.54 No.-

The characteristics of fruit quality, free radical scavenging activity of mango ‘Irwin’cultivated in a plastic heating house were compared between types of the fruit thinning (leaf-fruit ratio 7-10; rough fruit thinning, leaf-fruit ratio 16-20; and detailed fruit thinning). The fruit size during the growth stage and fruit quality after ripening were lower in rough fruit thinning (RFT) than in detailed fruit thinning (DFT). The proton efficiency(Fv/Fm) related to tree stress tended to be lower in REF than in DFT. The free radical scavenging activity differed according to the content of ethanol extract in peel and flesh. The free radical scavenging activity of RFT was higher than the of DEF in peel extracts when the content of ethanol was not higher then 0.25μg and the flesh extracts when the content to ethanol was not higher than 1mg. There was no difference in mangiferin content related to the free radical scavenging activity between the two treatments, but naringin content differed between the treatments. In particular, the difference in free radical scavenging activity in the peel and flesh extracts was thought to be attributable to the effects of added stress with the fruit setting burden in an environment with many extreme stress conditions 망고 ‘Irwin’의 가온 하우스 재배에 에서 열매솎이(엽과비, 7-10; 조적과 및 16-20; 정밀적과)에 따른 과실품질, 활성산소 소거활성을 비교하였다. 과실생육 동안에 과실크기와 후숙 후의 과실품질은 조적과가 정밀적과보다 낮았다. 나무의 스트레스와 연관된 광양자 효율(Fv/Fm)은 조적과가 정밀적과 보다 낮은 경향을 보였다. 활성산소 소거활성은 과피 및 과육의 에탄올 추출물 함량에 따라 차이가 있었다. 과피 추출물에서는 조적과가 0.25µg 이하에서 과육추출물은 1mg 이하에서 정밀적과 보다 높았다. 활성산소 소거활성에 관련된 mangiferin 함량은 처리간에 차이가 없었으나 naringin함량은 차이가 있었다. 특히, 과피 및 과육추출물에서 그 활성산소 소거활성의 차이는 극도의 여러 스트레스의 환경상태에서 착과부담이 더해진 스트레스 영향 등에 의한 것으로 생각이 되었다.

적과제 처리가 ‘홍로’와 ‘후지’ 사과의 착과 및 과실품질에 미치는 영향

유진기(Jingi Yoo),박무용(Moo-Yong Park),강인규(In-Kyu Kang) 한국원예학회 2014 원예과학기술지 Vol.32 No.5

본 연구는 ‘홍로’와 ‘후지’ 품종에 benzyladenine(BA, 99% purity), MaxCel<SUP>®</SUP>(1.9% BA), Fruitone(3.5% NAA), MaxCel<SUP>®</SUP> + Fruitone, simazine 등 약제들이 과실의 착과 및 과실품질에 미치는 영향을 조사하였다. BA와 MaxCel<SUP>®</SUP>은 100㎎·L<SUP>-1</SUP> 농도로, Fruitone은 0.1㎎·L<SUP>-1</SUP> 농도로 과실직경이 6㎜인 만개 8일 후에, 그리고 simazine은 400㎎·L<SUP>-1</SUP> 농도로 만개 7일후와 14일 후에 2회 처리하였다. 적과제 처리 후 ‘홍로’ 품종의 정화아의 과총당 착과수는 MaxCel<SUP>®</SUP> + Fruitone, MaxCel<SUP>®</SUP>, simazine 처리구가 각각 1.67, 1.84, 1.81개로 무처리구 2.35개보다 적어 적과효과를 보였고, 특히 무착과 과총 비율이 높아 적과효과가 더 우수하였다. ‘후지’ 품종의 경우 정화아의 과총당 착과수는 MaxCel<SUP>®</SUP> + Fruitone, Fruitone, MaxCel<SUP>®</SUP> 처리구가 1.29, 1.60, 1.76개로 무처리구 2.56개보다 적어 우수한 적과효과를 보였다. 또한, 두 품종 모두에서 MaxCel<SUP>®</SUP> + Fruitone 혼용처리구가 MaxCel<SUP>®</SUP> 단독처리구에 비하여 적과증진효과를 보였다. 그리고 액화아의 경우도 정화아의 결과와 유사한 결과를 보였다. 과중은 ‘홍로’ 품종의 BA 처리구에서, ‘후지’ 품종에서는 BA와 MaxCel<SUP>®</SUP> 처리구에서 증가하였다. 그리고 가용성 고형물 함량은 두 품종 모두에서 BA, MaxCel<SUP>®</SUP>, MaxCel<SUP>®</SUP> + Fruitone 처리 과실들에서 증가하였지만 다른 과실특성들은 차이를 보이지 않았다. Benzyladenine (BA, 99% purity), MaxCel<SUP>®</SUP> (1.9% BA), Fruitone (3.5% NAA), MaxCel<SUP>®</SUP> + Fruitone, a nd s imazine were applied postbloom as fruitlet thinning agents to mature ‘Hongro’ and ‘Fuji’ apple (Malus domestica Borkh.) trees. BA and MaxCel<SUP>®</SUP> were applied at 100 ㎎·L<SUP>-1</SUP> a.i. while Fruitone at 0.1 ㎎·L<SUP>-1</SUP> a.i. and simazine at 400 ㎎·L<SUP>-1</SUP> a.i. All PGRs were applied at 8 days after full bloom (DAFB, 6 ㎜ fruit diameter) in both cultivars, while simazine was treated twice at 7 and 14 DAFB. In ‘Hongro’, the number of total fruit set per flower cluster in terminal buds was 1.67, 1.84, and 1.81 in MaxCel® + F ruitone, MaxCel<SUP>®</SUP>, and simazine applications, respectively, when compared with 2.35 of water control. These reductions in fruit set were mainly attributed to the increased ratio of defruited clusters by the thinning agents. In ‘Fuji’ apple, the number of total fruit set per flower cluster in terminal buds was 1.29, 1.60, and 1.76 in MaxCel<SUP>®</SUP> + F ruitone, Fruitone, a nd MaxCel<SUP>®</SUP>, respectively, when compared with 2.56 of water control in ‘Fuji’ apple. The addition of Fruitone to the MaxCel<SUP>®</SUP> promoted the thinning efficacy in both cultivars, compared to MaxCel<SUP>®</SUP> only. The thinning efficacies were similarly observed with lateral flowers in both cultivars. A significant increase of fruit weight by the postbloom thinning treatments was observed only in the BA application in ‘Hongro’, while the effect was observed in BA and MaxCel<SUP>®</SUP> in ‘Fuji’. While the soluble solids content increased in the BA, MaxCel<SUP>®</SUP> and MaxCel<SUP>®</SUP>+Fruitone treatments in both cultivars, other fruit quality attributes were not affected by the application of post-bloom thinning agents.

Proteomics/qPCR protocol to estimate physical ages of wild male oriental fruit flies, Bactrocera dorsalis (Hendel)

Chiou Ling Chang 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.2

Laboratory reared fruit flies may have different behavioral phenotypes as compared to the wild in the field. The domesticated lab setting and the absence of factors from the natural environment on lab reared insects may result in different behavioral patterns, such as the length of life cycle. This study was performed to conduct a regression analysis of the ratio of odorant binding protein 99b (OBP99b) expression from 4 to 12-d-old oriental fruit fly males, relative to 1-d-old males to estimate the physical ages of wild male fruit flies. We established two polynomial linear regression equations based on 4–12 days old lab-reared flies using proteomics and qPCR. The equations are Y = −0.7768 + 0.7205X, R2 = 0.89 (for proteomics) and Y = −0.6478 + 0.344X, R2 = 0.64 (for qPCR). We used these equations to estimate the physical ages of wild-caught male fruit flies. These results indicate that despite multiple behavioral differences between laboratory reared and field-caught flies, the physical ages of both groups are identical.We suggest proteomics and qPCR analysis of selected genes and the proteins they encode may be developed into reliable tools for determining the ages of wild-caught animals, including oriental fruit flies.

고랭지 착색단고추의 낮은 플라스틱 온실재배시 적정 유인방법

이종남(Jong Nam Lee),이응호(Eung Ho Lee),임주성(Ju Sung Im),류승열(Seung Yeol Ryu),용영록(Yeoung Rok Yong) 한국원예학회 2007 원예과학기술지 Vol.25 No.2

본 실험은 고랭지에서 여름작형 착색단고추의 장기재배시 플라스틱필름 연동온실에 적합한 유인방법을 개발하고자 실시하였다. 유인처리는 직립유인, 경사유인, 직립 →경사유인(6월 8일) 및 직립 →경사유인(8월 21일) 등 4처리를 두었다. 생육초기에 경사유인은 측지수가 많고, 측지세력이 왕성하였다. 하위 엽의 투광률은 직립유인이 37%로 경사유인의 23%에 비해 14% 더 높았다. 착과율은 직립유인이 41%로 가장 높았다. 주당 수확과수는 직립유인이 18.1개로 경사유인의 12.9개보다 5.2개 더 많았다. 상품수량은 직립유인이 109톤ㆍha⁻¹으로 경사유인의 76톤ㆍha⁻¹보다 43% 증수되었다. 유인노력시간은 경사유인이 7,785시간ㆍha⁻¹으로 직립유인의 6,600시간ㆍha⁻¹보다 1,185시간ㆍha⁻¹ 정도 더 많았다. 따라서 고랭지에서 여름작형 착색단고추 재배의 낮은 플라스틱필름 온실재배 시 적정 유인방법은 직립 유인이었다. This study was conducted to evaluate the suitable training method under low plastic film greenhouse cultivation on sweet pepper in highland. Training treatments were upright training, inclination training, upright ⇒ inclination training (Jun. 8), and upright ⇒ inclination training (Aug. 21). In the early growth stage, lateral shoots of plants of inclination training treatments were strong and higher than those of others. Light transmission ratio of upright training around low leaves was 37% which was higher than 14% of inclination training. The fruit setting ratio of upright training was the highest by 41% out of all. The number of fruits per plant of the upright training was 18.1, which showed 5.2 more than that at inclination training. The marketable yield of the upright training was 109 tonㆍha⁻¹ which showed 43% higher than inclination training. Labor time of inclination training was 7,785 hrㆍha⁻¹ which showed 1,185 hrㆍha⁻¹ more than that of upright training. Therefore, the upright training was recommended for the suitable training method to marketable yield and quality improvement under low plastic film greenhouse cultivation on sweet pepper in highland.

표고별 여름작형 착색단고추의 고온기 과실특성과 경영요인 분석

이종남(Jong Nam Lee),이응호(Eung Ho Lee),임주성(Ju Sung Im),김원배(Won Bae Kim),용영록(Young Rok Yeoung) 한국원예학회 2008 원예과학기술지 Vol.26 No.3

본 연구는 여름작형 착색단고추의 적정 재배 표고를 제시하고자 실시하였다. 여름작형 착색단고추의 총재배면적은 58㏊였으며, 표고가 낮은 평난지(0-299m)의 재배면적은 총 면적의 29%를 차지하였다3. 고온기 (7-8월)에 평난지 평균기온은 착색단고추의 생육적온보다 높게 나타났다. 표고가 낮을수록 착과율과 과실품질이 저조하였을 뿐만 아니라 생리장해 및 병해충 발생률은 증가하였다. 순수익은 준고랭지(300-599m)와 고랭지(600-899m)에서 재배하였을 때 평난지 (0-299m)보다 각각 16, 10%높게 나타났다. 따라서 여름작형 착색단고추의 최적 재배지대는 준고랭지(300-599m)이다. This study was conducted to evaluate the suitable altitude for cultivating paprika in summer. Cultivation area of paprika for summer production was 58 ㏊ and lowland area at 0-299 m altitude occupied 29%. In high temperature period (from July to August), mean air temperature at 0-299 m altitude was higher than the suitable growth temperature of paprika. Fruit setting ratio increased with the higher altitude area whereas physiology disorder and damage by disease and insect pest increased with the lower altitude area. Fruit quality decreased with the lower altitude area. Business analysis results showed that the net profits at 300-599m and 600 ~ 899 m altitude were higher by 16 and 10%, respectively, than those in 0-299 m altitude. Therefore, highland area above the sea level 300 m-599 m altitude was the most suitable for paprika in summer culture.

Fatty alcohol 및 6-Benzyladenine 처리가 ‘후지’사과의 착과와 과실품질에 미치는 영향

신현우(Hyun-Woo Shin),유진기(Jingi Yoo),김우성(Woo-Sung Kim),권중근(Jung-Geun Kwon),나이묘윈(Nay Myo Win),강인규(In-Kyu Kang) 한국원예학회 2023 원예과학기술지 Vol.41 No.1