• 제목/요약/키워드: SSC12

검색결과 55건 처리시간 0.018초

딸기 유기 재배시 주요 품종간 생육, 수량 및 병해충 발생 특성 (Characteristics of Growth, Yield and Disease/Pest Occurrence among Major Strawberry Cultivars for Organic Forcing and Semi-forcing Culture)

  • 김대영;고관달;윤형권;윤무경;곽정호;김태일
    • 생물환경조절학회지
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    • 제17권4호
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    • pp.336-341
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    • 2008
  • 국내에서 육성된 딸기 '매향' 등 6품종을 대상으로 유기재배 방법으로 촉성 및 반촉성 작형에서 재배하여 생육, 수량, 과실 품질 및 병해충 발생 양상 등을 조사하여 유기농 재배에 적합한 딸기 품종을 선발하고자 본 연구를 수행하였다. 2년에 걸친 시험 결과 두작형 모두에서 '설향'의 수확량이 타품종에 비하여 유의성있게 높았다. '설향'의 재배기간 전체 평균 당도는 $12.0^{\circ}Bx$로 타품종과 비교하여 낮은 경향이었으며 특히 고온기에 당도저하가 두드러졌다. 그러나 촉성 재배의 주요 출하시기인 2월 하순까지는 타품종과 비슷한 당도 변화를 보였다. '설향'의 경도는 평균 279g/${\phi}5mm$로서 기존 촉성재배 대비 품종인 '아키히메'보다 조금 높은 경향을 보였으며, 산도는 '매향'(0.69%)에서 가장 높았다. 촉성 재배시 '선홍'에서 생체중 및 근중이 타 품종에 비하여 유의하게 높았으며, 엽면적은 '설향'이 유의성있게 높았다. 반촉성재배시 품종간 생육 특성은 통계적으로 유의성이 없었다. 병해충 발생양상을 조사한 결과 '설향'의 잿빛곰팡이병 발병도가 높게 나타났다. 재배 및 육묘기 모두 '설향'이 흰가루병에 강한 저항성을 보였으며, 목화진딧물 발생량도 타품종과 비교하여 낮은 경향이었다. 점박이응애 발생량은 '레드펄'에서 낮은 밀도를 보였다. 전체적인 생육 및 병해충 발생양상을 조사한 결과 '설향'이 촉성 유기 재배에 가장 적합한 품종으로 판단되었으며 반촉성 재배시에는 고온기 '설향'의 경도 및 당도가 저하되어 적합하지 않을 것으로 판단된다.

돼지 등심 내 카프르산 함량과 단일염기다형 마커 rs81437607 유전자형의 상관 (Association of the Genotypes of Single Nucleotide Polymorphism Marker rs81437607 with Capric Acid Contents in longissimus dorsi Muscle in Pigs)

  • 김상금;박희복;강용준;신현숙;조상래;이왕식;한상현;조인철
    • 한국수정란이식학회지
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    • 제31권3호
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    • pp.235-242
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    • 2016
  • This study tested the association between genotypes of the single nucleotide polymorphism (SNP) marker, rs81437607 and capric acid (FA_C10_0) compositions in longissimus dorsi muscle in pigs. Eighteen fatty acid (FA) compositions were measured in a total of 974 $F_2$ animals among 1,106 $F_2$ progeny produced between Landrace and Jeju Black Pig (JBP). Among FA compositions tested, we identified a cluster of highly significant SNPs for capric acid compositions on 58 Mb position of Sus scrofa chromosome 12 (SSC12) using genome-wide association study (GWAS) with $F_2$ genotypes from SNP panel analysis. GWAS results showed that the rs81437607 was the highest trait-related SNP marker with capric acid levels. Three genotypes (C/C, C/T and T/T) of rs81437607 marker were found in $F_2$ population by further pyrosequencing. Association analysis results showed the significant differences between rs81437607 genotypes and capric acid compositions (P<0.05). The $F_2$ pigs harboring rs81437607 C/C ($0.119{\pm}0.002%$) and C/T ($0.116{\pm}0.002%$) genotypes showed additively higher levels of capric acid content than those of T/T homozygotes ($0.109{\pm}0.002%$) ($P=1.30{\times}10^{-12}$). These results suggested that the genetic variations of rs81437607 may be helpful to find causative variants and assist as molecular genetic markers for improving the capric acid contents in longissimus dorsi muscle in pigs.

돼지 FABP3 Promoter 부위 내 신규 돌연변이 탐색과 근내지방도와의 연관성 분석 (Detection of Novel Mutations in the FABP3 Promoter Region and Association Analysis with Intramuscular Fat Content in Pigs)

  • 김재환;박응우;박정진;최봉환;김태헌;서보영;정일정;임현태;오성종;이정규;전진태
    • Journal of Animal Science and Technology
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    • 제47권1호
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    • pp.1-10
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    • 2005
  • Intramuscular fat content(lMF) is considered as one of major economic traits in the pig breeding and industry. In general, high IMF results in better meat quality. Several approaches to detect quantitative trait 10ci( QTL) for IMF indicated a strong possibility of the existence of a QTL related to IMF between the microsatellite marker SW71 and SW1881 on SSC6q. Porcine FABP3 has been considered as a candidate gene affecting IMF due to its physiological roles and position on the pig genome. Two novel mutations, g.-114T> C and g.-158T>G were detected by duplicate sequencing of the porcine FABP3 promoter region. These two mutations were identified as absolute linkage disequilibrium. The g.-158T> G mutation was used for investigating relationships with growth and fat deposition traits. The GG genotype of the g.-158T> G polymorphism showed highly negative effects(P< 0.01) on body weights at 3 and 12 weeks of age, and a positive effect(P< 0.05) on IMF. However, backfat thickness(BF) and carcass fat(CF) content were not significantly associated with the genotype. The result indicates that the novel mutations, identified in this study, could be utilized as possible genetic markers to improve IMF, independent with BF.

Improvement of Shelf-life and Quality in Fresh-Cut Tomato Slices:

  • Hong Ji Heun
    • 한국식품저장유통학회:학술대회논문집
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    • 한국식품저장유통학회 2004년도 총회및 심포지움
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    • pp.67-72
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    • 2004
  • Quality of fresh-cut tomato slices was compared during cold storage under various modified atmosphere packaging conditions. Chilling injury of slices in containers sealed with Film A was higher than with Film B; these films had oxygen transmission rates of 87.4 and 60.0 ml $h^{-1}\;m^{-2}\;atm^{-1}$ at $5^{\circ}C\;and\;99\%$ RH, respectively. While slices in containers with an initial atmospheric composition of air, $4\%\;CO_2+1\;or\;20\%\;O_2,\;8\%\;CO_2+1\;or\;20\%\;O_2,\;or\;12\%\;CO_2+20\%\;O_2$ showed fungal growth, slices in containers with $12\%\;CO_2+1\%\;O_2$ did not. Low ethylene in containers enhanced chilling injury. Modified atmosphere packaging provided good quality tomato slices with a shelf-life of 2 weeks or more at $5^{\circ}C$. Experiments were conducted to compare changes in quality of slices of red tomato (Lycopersicon esculentum Mill. 'Sunbeam') fruit from plants grown using black polyethylene or hairy vetch mulches under various foliar disease management systems including: no fungicide applications (NF), a disease forecasting model (Tom-Cast), and weekly fungicide applications (WF), during storage at $5^{\circ}C$ under a modified atmosphere. Slices were analyzed for firmness, soluble solids content (SSC), titratable acidity (TA), pH, electrolyte leakage, fungi, yeasts, and chilling injury. With both NF and Tom-Cast fungicide treatments, slices from tomato fruit grown with hairy vetch (Vicia villosa Roth) mulch were firmer than those from tomato fruit grown with black polyethylene mulch after 12 days storage. Ethylene production of slices from fruit grown using hairy vetch mulch under Tom-Cast was about 1.5- and 5-fold higher than that of slices from WF and NF fungicide treatments after 12 days, respectively. The percentage of water-soaked areas (chilling injury) for slices from tomato fruit grown using black polyethylene mulch under NF was over 7-fold that of slices from tomato fruit grown using hairy vetch under Tom-Cast. When stored at $20^{\circ}C$, slices from light-red tomato fruit grown with black polyethylene or hairy vetch mulches both showed a rapid increase in electrolyte leakage beginning 6 hours after slicing. However, slices from tomato fruit grown using the hairy vetch mulch tended to have lower electrolyte leakage than those grown with black polyethylene mulch. These results suggest that tomato fruit from plants grown using hairy vetch mulch may be more suitable for fresh-cut slices than those grown using black polyethylene mulch. Also, use of the disease forecasting model Tom-Cast, which can result in lower fungicide application than is currently used commercially, resulted in high quality fruit for fresh-cut processing. Experiments were conducted to determine if ethylene influences chilling injury, as measured by percentage of slices exhibiting water-soaked areas in fresh-cut tomato slices of 'Mountain Pride' and 'Sunbeam' tomato (Lycopersicon esculentum Mill.). Ethylene concentration in containers without ventilation significantly increased during storage at $5^{\circ}C$, whereas little or no accumulation of ethylene occurred in containers with one or six perforations. Chilling injury was greatest for slices in containers with six perforations, compared to slices in containers with one perforation, and was over 13-fold greater than that of slices in control containers with no perforations. An experiment was also performed to investigate the effectiveness of including an ethylene absorbent pad in containers on subsequent ethylene accumulation and chilling injury. While ethylene in the no-pad controls increased continually during storage of both 'Mountain Pride' and 'Sunbeam' tomatoes at $5^{\circ}C$ under modified atmosphere conditions, no increase in accumulation of ethylene was observed in containers containing ethylene absorbent pads throughout storage. The ethylene absorbent pad treatment resulted in a significantly higher percentage of chilling injury compared with the no-pad control. In studies aimed at inhibiting ethylene production using AVG during storage of slices, the concentration of ethylene in control containers (no AVG) remained at elevated levels throughout storage, compared to containers with slices treated with AVG. Chilling injury in slices treated with AVG was 5-fold greater than that of controls. Further, we tested the effect of ethylene pretreatment of slices on subsequent slice shelf-life and quality. In slices treated with ethylene (0, 0.1, 1, or $10\;{mu}L\;L^{-1}$) immediately after slicing, ethylene production in non-treated controls was greater than that of all other ethylene pre-treatments. However, pretreatment of slices 3 days after slicing resulted in a different pattern of ethylene production during storage. Ihe rate of ethylene production by slices treated with 1 L $L^{-1}$ ethylene 3 days after slicing was greater during storage than any of the other ethylene treatments. With slices pre-treated with ethylene, both immediately and 3 days after slicing, the rate of ethylene production tended to show an negative correlation with chilling injury. Chemical name used: 1-aminoethoxyvinylglycine (AVG).

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CA 컨테이너를 이용한 수출 멜론의 선도유지 효과 (Effectiveness of controlled atmosphere container on the freshness of exported PMRsupia melon)

  • 양해조;장민선;박부희;엄향란;조재한;최지원;임수연;윤여은;최한률;박미희;홍윤표;이지현
    • 한국식품저장유통학회지
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    • 제30권5호
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    • pp.822-832
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    • 2023
  • 본 연구에서는 수출 멜론의 선도유지를 위하여 컨테이너 종류별 모의 수송 후 저장기간 동안의 품질변화를 분석하여 CA 컨테이너의 효과를 구명하고자 수행하였다. 멜론은 전남 영암군에서 재배된 멜론을 수확 후, Reefer 컨테이너와 CA 컨테이너로 나눠 수송하였고, CA 컨테이너의 환경조건은 온도 4℃, O2 5%, CO2 12%, Reefer 컨테이너는 4℃로 설정하였다. 2주간의 모의 수송이 끝난 후 수출대상국 현지에서의 판매 조건인 10℃에 저장하면서 생체중 감소율, 가용성 고형물 함량, 경도, 색도, 호흡률, 에틸렌 발생량 및 부패율 등을 조사하였다. 또한, CA 컨테이너 환경조건이 멜론에서 발생하는 Penicillium oxalicum 균의 억제 효과를 구명하기 위해 포자현탁액을 접종하여 부패 억제 효과를 분석하였다. 생체중 감소율은 수송 2주 후 0, 3, 6일 차에는 통계적으로 유의한 차이는 보이지 않았지만, 9일차에 CA 컨테이너 처리구의 중량감소가 적었다. 경도는 Reefer 컨테이너 처리구가 모의 수송 직후 5.18N으로 급격하게 낮아졌으며 유통기간 동안 CA 컨테이너 처리구의 경도가 높게 유지되었다. 가용성 고형물 함량은 Reefer 컨테이너 처리구에서 모의 수송 직후인 0일차에 10.9 °brix로 CA 컨테이너 처리구보다 높게 나타난 후 이후부터는 꾸준하게 감소하였지만, CA 컨테이너 처리구는 모의 수송 및 저장기간 중 큰 변화는 없었다. 과육의 색 변화 정도를 나타내는 ΔE는 Reefer 컨테이너 처리구가 수송 후 저장기간이 길어질수록 증가하였고, CA 컨테이너 처리구는 Reefer 컨테이너 처리구보다 낮게 유지되었다. 부패율은 미생물을 접종하지 않은 시험 처리구에서 Reefer 컨테이너는 20%, CA 컨테이너에서는 5% 정도 부패가 발생하였고, 미생물을 접종한 시험 처리구에서는 Reefer 컨테이너는 100%, CA 컨테이너에서는 75% 정도 부패가 발생하였다. 따라서 멜론은 수확후 CA 컨테이너로 수송하여 유통 또는 저장하는 것이 품질 및 선도유지에 효과적이라 판단된다.