• 제목/요약/키워드: Rural populations

검색결과 245건 처리시간 0.032초

Genetic Relationships among Australian and Mongolian Fleece-bearing Goats

  • Bolormaa, S.;Ruvinsky, A.;Walkden-Brown, S.;van der Werf, J.
    • Asian-Australasian Journal of Animal Sciences
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    • 제21권11호
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    • pp.1535-1543
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    • 2008
  • Microsatellites (MS) are useful for quantifying genetic variation within and between populations and for describing the evolutionary relationships of closely related populations. The main objectives of this work were to estimate genetic parameters, measure genetic distances and reconstruct phylogenetic relationships between Australian Angora/Angora_Aus/ and Cashmere/Cashmere_Aus/ populations and three Mongolian Cashmere goat (Bayandelger/BD/, Zavkhan Buural/ZB/, and Gobi Gurvan Saikhan/GGS/) populations based on variation at fourteen MS loci. The level and pattern of observed and expected heterozygosity and polymorphic information content of the fourteen loci studied across the populations were quite similar and high. Except for SRCRSP07, all studied microsatellites were in Hardy-Weinberg Equilibrium (p<0.001). Moderate genetic variation (7.5%) was found between the five goat populations with 92.5% of total genetic variation attributable to diversity existing between the individuals within each population. The greatest Nei's genetic distances were found between the Angora and four Cashmere populations (0.201-0.276) and the lowest distances were between the Mongolian Cashmere goat populations (0.026-0.031). Compared with other Cashmere goat populations, the GGS (crossbred with Russian Don Goats) population had the smallest pairwise genetic distance from the Australian Angora population (0.192). According to a three-factorial correspondence analysis (CA), the three different Mongolian Cashmere populations could hardly be distinguished from each other.

산사태 대비 농촌 주민 대피계획 개선 방안 (Improved Plan for Evacuation of Residents in Landslide-Prone Rural Area)

  • 김정면;박성용;임창수;연규석;김용성
    • 한국농공학회논문집
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    • 제59권1호
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    • pp.1-10
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    • 2017
  • This study has purpose on deducting problems of evacuation plan for vulnerable populations in disaster and suggesting improvement plan through analysis of disaster weakness in domestic rural region aiming at vulnerable populations in disaster like old people containing most of domestic rural population, sometimes being in blind spot of safety when landslide or disaster occur. As a result, we could know that rural regions have high proportion of vulnerable populations in disaster like old people, also being so weak to landslide and slope collapse. So we suggested development of manual describing prevention of disaster and evacuation for vulnerable populations in disaster like old people and disaster evacuation organization for house and minimizing solution for damage of human life through improvement of steep slope evaluation criteria.

Evaluation of QTL Related SSR Marker Universality in Korean Rice Breeding Populations

  • Song, Moon-Tae;Lee, Jeom-Ho;Lee, Sang-Bok;Ku, Ja-Hwan;Cho, Youn-Sang;Song, Myung-Hee;Park, Sung-Ho;Hwang, Hung-Goo
    • 한국작물학회지
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    • 제48권1호
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    • pp.56-64
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    • 2003
  • If a quantitative trait loci (QTL) marker identified in a population is applicable to different populations (marker universality), this will not only reduce the labor and cost in marker assisted selection (MAS), but accelerate the application of molecular markers to real breeding programs. Present study aims to evaluate the defined QTL related markers from a population to a different breeding population for the MAS. Four rice breeding populations were subjected to seventy-five simple sequence repeat (SSR) markers which were already identified for their polymorphism information content (PIC) in the parents of the crossings. Among them, eight markers were evaluated for their correlation between presence of marker alleles and phenotypic expression in breeding populations. A reasonable level of polymorphism for the mapped markers originated from any sources of rice accessions was observed between crosses of any sources (marker repeatability). However, correlation between presence of markers and expression of the traits in rice breeding populations was not significant except for minor portion of traits and markers examined (failure of marker universality). In the present study, various strategies were discussed to develop new markers with universality of breeding application.

도시·농촌지역 주민의 건강행태에 관한 연구 (A Study on Health Behavior of the Populations in Urban and Rural Area)

  • 이정미;권근상;이주형;전갑성
    • 농촌의학ㆍ지역보건
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    • 제30권2호
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    • pp.213-225
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    • 2005
  • 도시 농촌지역 주민의 건강형태를 알아보기 위하여 전주 및 고창, 순창, 임실, 부안, 무주, 장수, 진안 지역에서 살고 있는 만 20세 이상의 2,086명을 대상으로 2001년 7월 1일부터 9월 30일까지 3개월 동안 설문조사를 실시한 결과 다음과 같았다. 1. 조사대상자의 일반적 특성은 성별, 연령, 결혼상태에서 도시와 농촌이 비슷한 분포였다. 교육수준은 도시에서 전문대졸 이상이 42.0%, 농촌에서는 중졸이하가 37.2%로 가장 높게 나타나, 농촌과 도시에서의 교육수준이 현저한 차이를 보였다(p<0.01). 직업은 도시에서 가정주부(26.1%), 일반사무직(18.9%)로 나타난 반면, 농촌에서는 일반사무직(20.6%), 농 어 축산업(21.3%), 가정주부(19.5%)순으로 나타났다(p<0.01). 2. 도시, 농촌에 따른 주관적 건강상태에 대한 생각은 도시와 농촌이 비슷한 분포였다. 복용한 건강식품은 도시에서 영양제와 보약이 22.1%와 24.1%로 농촌의 18.8%와 20.8%보다 높게 나타났다(p<0.05). 또한 만성질환의 유병률은 22.2%였으며, 도시와 농촌에 차이는 없었다. 3. BMI 25이상인 경우가 조사대상자 중 17.4%였으며, 도시와 농촌이 비슷한 수준이었다. 음주와 흡연, 충분한 수면여부 또한 도시와 농촌이 비슷한 분포를 보였고, 운동에서만이 주 1회 이상 하는 경우가 도시에서 44.8%, 농촌에서 37.1%로 농촌보다 도시가 높게 나타났다(p<0.01). 4. 식생활습관에서 커피음용과 육류섭취는 도시와 농촌에서 비슷한 분포를 보였고, 과식은 도시에서 73.5%, 농촌에서는 66.9%로 농촌보다 도시에서 현저하게 높게 나타났다(p<0.01). 규칙적인 식사와 음식을 짜게 먹는 경우, 채소의 섭취가 도시보다 농촌에서 많이 하는 것으로 나타났다(p<0.01). 5. 종합검진은 도시와 농촌이 비슷하였고, 적어도 3-4년에 한번 받는 경우는 58.7%였다. B형간염예방접종은 대상자이나 실시하지 않은 경우가 도시에서 17.5%, 농촌에서 11.5%로서 농촌보다 오히려 도시에서 예방접종을 실시하지 않은 경우가 많았으며, 암검사는 받은적이 있다고 응답한 경우가 도시에서 33.1%, 농촌에서 27.8%로 농촌보다 도시에서 더 높게 나타났다(p<0.05). 6. 자각적 건강상태를 종속변수로설정하고, 나머지 일반적 특성 및 건강형태, 건강검진을 독립변수로하여 다변량분석 한 결과, 성별, 연령, 직업, 교육수준, 운동여부가 자각적 건강상태에 영향을 미치는 것으로 나타났다(p<0.05). 또한 만성질환과 관련이 있을 것으로 예상되는 변수를 다변령분석 한 결과 연령, 교육수준, BMI, 육류섭취정도, 암검사여부의 변수들이었다(p<0.05). 이상의 결과로 전북지역에 거주하는 도시와 농촌지역주민들의 건강형태는 운동 및 식생활 습관, 건강검진에서 차이를 보였으며, 자각적 건강상태와 만성질환에 영향을 미칠것으로 생각되는 변수로는 연령과 교육수준, 운동 및 BMI 등이 나타나 앞으로 연구 뿐 아니라 보건사업 계획에도 이러한 사항을 고려하여야 할 것으로 사료된다.

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Application of genomic big data to analyze the genetic diversity and population structure of Korean domestic chickens

  • Eunjin Cho;Minjun Kim;Jae-Hwan Kim;Hee-Jong Roh;Seung Chang Kim;Dae-Hyeok Jin;Dae Cheol Kim;Jun Heon Lee
    • Journal of Animal Science and Technology
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    • 제65권5호
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    • pp.912-921
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    • 2023
  • Genetic diversity analysis is crucial for maintaining and managing genetic resources. Several studies have examined the genetic diversity of Korean domestic chicken (KDC) populations using microsatellite markers, but it is difficult to capture the characteristics of the whole genome in this manner. Hence, this study analyzed the genetic diversity of several KDC populations using high-density single nucleotide polymorphism (SNP) genotype data. We examined 935 birds from 21 KDC populations, including indigenous and adapted Korean native chicken (KNC), Hyunin and Jeju KDC, and Hanhyup commercial KDC populations. A total of 212,420 SNPs of 21 KDC populations were used for calculating genetic distances and fixation index, and for ADMIXTURE analysis. As a result of the analysis, the indigenous KNC groups were genetically closer and more fixed than the other groups. Furthermore, Hyunin and Jeju KDC were similar to the indigenous KNC. In comparison, adapted KNC and Hanhyup KDC populations derived from the same original species were genetically close to each other, but had different genetic structures from the others. In conclusion, this study suggests that continuous evaluation and management are required to prevent a loss of genetic diversity in each group. Basic genetic information is provided that can be used to improve breeds quickly by utilizing the various characteristics of native chickens.

Effective Population Size of Korean Populations

  • Park, Leeyoung
    • Genomics & Informatics
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    • 제12권4호
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    • pp.208-215
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    • 2014
  • Recently, new methods have been developed for estimating the current and recent changes in effective population sizes. Based on the methods, the effective population sizes of Korean populations were estimated using data from the Korean Association Resource (KARE) project. The overall changes in the population sizes of the total populations were similar to CHB (Han Chinese in Beijing, China) and JPT (Japanese in Tokyo, Japan) of the HapMap project. There were no differences in past changes in population sizes with a comparison between an urban area and a rural area. Age-dependent current and recent effective population sizes represent the modern history of Korean populations, including the effects of World War II, the Korean War, and urbanization. The oldest age group showed that the population growth of Koreans had already been substantial at least since the end of the 19th century.

국내 주요 토마토 주산지에서 발생하는 가루이류 발생현황 (Occurrence Status of Whitefly Populations in Major Domestic Cultivation Areas of Tomatoes)

  • 서미혜;조영식;양창열;윤정범
    • 한국응용곤충학회지
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    • 제59권4호
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    • pp.411-416
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    • 2020
  • 2015년부터 2018년까지 시설하우스에서 토마토 재배기간인 11월부터 이듬해 5월까지 충남 논산, 부여, 전북 익산에서 가루이의 종류와 발생 현황을 조사하였다. 반면 5월부터 10월까지는 억제재배를 하는 전북 장수지역에서 조사를 수행하였다. 시기별로 가루이를 채집하여 동정한 결과 온실가루이(Trialeurodes vaporariorum)와 담배가루이(Bemisia tabaci)의 발생이 확인되었다. 주로 온실가루이와 담배가루이가 혼재되어 있는 경우가 많았으며 두 종 중 담배가루이의 발생이 높게 나타났다. 가루이의 발생은 3월 하순부터 증가하기 시작하여 5월에는 밀도가 급격하게 증가하였고 수확기가 끝나는 시점에서는 밀도가 가장 높았다. 따라서, 시설하우스에서 가루이의 효율적 방제를 위해서는 촉성재배는 3월 상순부터, 억제작형은 6월 상순부터 예찰하고 밀도가 증가하기 전에 초기 방제하여야 할 것이다.

도시 및 농어촌 거주 노인의 초가공식품 섭취 상태와 당뇨 및 공복혈당장애에 대한 단면연구 (Association of ultra-processed food with diabetes and impaired fasting glucose in elderly populations (urban and rural): a cross-sectional study)

  • 이승재;조미숙
    • 대한지역사회영양학회지
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    • 제29권1호
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    • pp.51-64
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    • 2024
  • Objectives: This study examined the association between ultra-processed food (UPF) consumption and chronic diseases in elderly Koreans. Methods: Data from the 2019-2021 Korea National Health and Nutrition Examination Survey were analyzed. Dietary intake and UPF consumption were assessed using the NOVA food classification based on 24-hour recall data from 3,790 participants (aged 65+ years). Participants were divided into 4 groups based on the quartile of energy intake from UPFs. Regions were classified as urban or rural. Multivariable logistic regression was employed to estimate the adjusted odds ratios (AORs) with 95% confidence intervals (CIs) after controlling for potential confounders. Results: Among the participants, 71.3% resided in urban and 28.7% in rural areas. Compared to the urban elderly, rural participants tended to be older, have lower education and income levels, be more likely to live in single-person households, and have a higher smoking rate (P < 0.05). Urban elderly consumed more UPFs daily (146.1 g) compared to rural residents (126.6 g; P < 0.05). "Sugar-sweetened beverages" were the most consumed category in both regions. "Sweetened milk and its products" and "traditional sauces" were prominent in urban areas, while rural elderly consumed more "traditional sauces" and "distilled alcoholic beverages." Rural areas also had a higher carbohydrate-to-calorie ratio than urban areas. Compared to the lowest quartile of UPF intake, the highest quartile was significantly associated with impaired fasting glucose only in rural areas (AOR, 1.48; 95% CI, 1.00-2.19; P for trend = 0.0014). No significant associations were observed for diabetes in either urban or rural areas. Conclusions: This study suggests that high intake of UPFs is associated with increased odds of impaired fasting glucose in rural elderly. Further research is needed to elucidate the specific negative health effects of UPFs in different populations, and targeted efforts should promote healthy diets in both urban and rural areas.

고도에 따른 지역별 복숭아혹진딧물 집단 변이 마커 개발 (Development of Variation Marker of Myzus persicae by Altitude)

  • 김주일;권민
    • 한국응용곤충학회지
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    • 제50권4호
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    • pp.325-333
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    • 2011
  • 기후변화에 따른 고도별 곤충의 유전 변이를 분석하고자 배추에서 복숭아혹진딧물(Myzus persicae)을 지표해충으로 변이 분석이 가능한 마커를 개발하고자 하였다. 즉, 지역의 기후가 변하면 유전자가 변동할 것이라는 가설 하에 실내에서 누대 사육된 계통을 비교집단으로 가정하고 횡성, 평창과 강릉 지역에서 고도별 5개 지역(157 m, 296 m, 560 m, 756 m, 932 m)에서 채집된 지역 집단간의 변이를 찾고자 하였다. 생태적 변이는 모든 집단에서 찾을 수가 없었고, 에스터레이즈 동위효소 분석 및 inter-simple sequence repeat (ISSR) PCR 결과에서 실내 사육 계통과 지역 집단간의 차이는 보였으나 지역 집단간의 큰 차이는 찾을 수가 없었다. 그러나 rRNA와 mtCO I 부분 염기서열을 분석하여 5개의 지역집단 내에서 internal transcribed spacer-2 (ITS-2) 와 mtCO I에 각각 한 개씩의 단일염기다형성(SNP)를 발견하였다. 이 SNP는 유전 변동 추적이 가능한 매우 유용한 마커로 사용 될 수 있다.

Characterization of Heterodera sojae Virulence Phenotypes in Korea

  • Kang, Heonil;Ko, Hyoungrai;Park, Byeongyong;Choi, Insoo
    • The Plant Pathology Journal
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    • 제38권4호
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    • pp.366-371
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    • 2022
  • The white soybean cyst nematode Heterodera sojae, isolated from the roots of soybean in Korea, is widespread in most provinces of the country and has the potential to be as harmful to soybean as H. glycines. Determining the virulence phenotypes of H. sojae is essential to devising management strategies that use resistant cultivars. Consequently, virulence phenotypes of 15 H. sojae populations from Korea were determined on seven soybean lines and one susceptible check variety. Two different HS types were found to be present in Korea; the more common HS type 2.5.7, comprising 73.3% of the H. sojae populations and the less common HS type 0, constituting only 26.7% of the tested populations. Considering the high frequency of H. sojae adaptation to soybean indicator lines, the PI 88788 group may not be a possible source of resistance while PI 548402, PI 90763, PI 437654, and PI 89772 can be used as resistance sources for soybean breeding programs aimed at developing H. sojae-resistant soybean cultivars in Korea.