• Plant Resources
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• 제8권3호
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• pp.235-243
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• 2005

The purpose of this research is to establish basic database on Cornus kousa by way of investigation, analysis and comparison of characteristics of leaf and flower, then fostering good cultivar on each morphological characteristics - leaf length, leaf width, petiole length, left lateral vein, right lateral vein. Leaf length and leaf width in Mt. Jiri shows big tendency which is 83.5 mm, 52.4 mm each in comparison with the whole mean of 72.5 mm, 41.2 mm, whereas populations of Suwon and Mt. Halla has leaf length of 66.0 mm, 65.7 mm - 9.8%, 10.4% lower value in comparison with seven mean population; leaf width is 38.4 mm, 35.3 mm - 7.3%, 16.7% lower than whole mean and shows lowest tendency among seven selected populations. Long width of flower and short width of flower in Boeun shows big tendency which is 99.9mm, 96.5 mm each in comparison with the whole mean of 76.0 mm, 73.6 mm, whereas populations of Mt. Halla has 50.1 mm, 48.2 mm which shows lowest tendency. On petal length, petal width and length of flower petiole, Boeun populations have bigger and Mt. Halla shows little tendency. The measurement result of flower colors on each population by using Spectrum Color Mater shows followings: populations of Mt. Duckyoo and Mt. Halla shows lower lightness than any other populations, but wholly shows higher lightness which is refers brightness in seven selected populations. Thus it shows peculiarities of white flower color.

• 한국어류학회지
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• 제21권2호
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• pp.129-133
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• 2009

본 연구는 RAPD PCR 분석을 통하여 한국의 서한아 수계(한강, 금강)와 남한아 수계(섬진강, 낙동강)에 서식하는 쉬리 집단들 간의 유전변이를 비교하였다. 4집단들 간의 유전적 변이를 분석한 결과, 사용한 12개의 random primer들 모두에서 서한아 수계 집단과 남한아 수계의 집단들을 구분하여 주는 특이적 PCR 단편들을 확인할 수 있었다. 유전적 유사도 분석에서 한강, 금강의 서한아 수계 집단들과 섬진강, 낙동강의 남한아 수계 집단들의 유전적 유사도는 0.49~0.53로 낮게 나타났고 유전적 거리는 0.63~0.71로 높게 나타났다. 유전적 거리에 기초한 UPGMA dendrogram 분석에서도 서한아 수계와 남한아 수계의 집단들이 명확하게 구분되었다. 따라서 서한아와 남한아 수계의 쉬리 집단은 유전적 구조에 있어 큰 차이가 있으며, 남한아 수계의 쉬리는 서한아 수계 쉬리와 진화적으로 뚜렷하게 구분되는 집단으로 판단된다.

• Journal of Plant Biology
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• 제29권2호
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• pp.95-107
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• 1986

Seasonal changes in pool size, inflow rates in biomass and phosphorus, and the efficiency of phosphorus use in the stand of three populations (Helianthus tuberosus, Artemisia princeps and Phalaris arundinacea) in the basin of the Mt. Geumoh were investigated. During the early growing period, in the three species populations the relative size of the phosphorus pool of population was larger then that of its biomass pool, but that of the phosphorus pool of belowground part decreased more rapidly than that of its biomass pool. In the A. princeps and P. arundinacea populations, the phosphorus inflow rate was markedly high during the soil thaw in early spring and its seasonal change pattern was different from that of the biomass production rate, showing two peaks in March and June. But in the H. tuberosus population, the two seasonal change patterns were alike. The annual biomass production was 2283 gDM m-2 in the H. tuberosus, 1884 m-2 in the A. princeps and 1879 gDM m-2 in the P. arundinacea population, and the annual phosphorus inflow was 11.35, 9.63 and 7.60 gP m-2, respectively. The P. arundinacea population showed the smallest LAI peak(5.4 in early June), and the largest NAR peak (36.9 gDM m-2wk-1) RGR peak (0.15g g-1 wk-1) among the three species populations. The seasonal change patterns in whole plant EPU of the three species populations showed the bell shape, but the annual EPU values among them were markedly different. It was noticed that the population with the highest RGR showed the highest EPU among the three species populations while the population with the lowest RGR showed the lowest EPU among them.

• 한국패류학회지
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• 제22권2호
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• pp.97-108
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• 2006

Genomic DNA samples isolated from geographical purple Washington clam (Saxidomus purpuratus) were obtained from two different regions in Korean Peninsula: Gunsan (Gunsan population; GSP), and Haeju (Haeju population; HJP), a collection area in the vicinity of the West Sea. The seven arbitrarily primers, OPA-07, OPA-09, OPA-18, OPA-20, OPC-03, OPC-06 and OPC-09 were shown to generate the total loci, loci observed per primer, shared loci by each population, specific, and polymorphic loci which could be clearly scored. We also generated the unique shared loci to each population and shared loci by the two populations in purple Washington clam. The size of the DNA fragments also varied wildly, from 50 to 2,400 bp. Here, 304 total loci were identified in the GSP purple Washington clam population, and 282 in the HJP: 91 polymorphic loci (29.9%) in the GSP and 47 (16.7) in the HJP. 198 shared loci, with an average of 28.3 per primer, were observed in the GSP population. The decamer primer OPA-07 generated the shared loci by the two populations, approximately 1,000 bp, between the two Saxidomus populations. The oligonucleotide primer OPC-03 also generated the shared loci by the two populations, approximately 500 bp and 1,000 bp, in GSP population from Gunsan and HJP population from Haeju. The other primer, OPC-06 generated the shared loci by two Gomphina populations (approximately 400 bp). The dendrogram, generated by seven reliable primers, indicates three genetic clusters. The dendrogram obtained by the seven primers indicates three genetic clusters: cluster 1 (GUNSAN 01-GUNSAN 02), cluster 2 (GUNSAN 03-GUNSAN 11), and cluster 3 (HAEJU 12-HAEJU 22). The genetic distance between the two geographical populations ranged from 0.043 to 0.506. Especially, the longest genetic distance displaying significant molecular differences, 0.506, was found to exist between individuals GUNSAN no. 11 of Gunsan and HAEJU no. 17 of Haeju.

• 한국자원식물학회지
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• 제25권1호
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• pp.72-79
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• 2012

Vaccinium oldhami Miq. is a Korean native tree, which is deciduous and shrub tree with broad leaf. It grows 1~4m in height generally. Ecologically, this tree grows well in shady place even in barren soil. Also, the tree has resistance to cold and dry, which tend to form a little community. This research investigates quantitative morphological characteristics of leaf and fruit among the V. oldhami in South Korea and then considers its relationship on the basis of raw data among the 10 populations. This study will give us invaluable information about growing conditions, reasonable management and breeding by selection of V. oldhami in South Korea. The main results obtained from this study are summarized as follows; Leaf size of Mudeung population was larger than other populations. Naebyeon population was smaller in size of the leaf than other populations. Anmyeondo population was larger in fruit characteristics compared with other populations and Deogyu population was the smallest among populations. According to cluster analysis based on the leaf and fruit morphological characteristics, the natural V. oldhami populations were classified into four groups such as the first group of Kumo population, the second group of Mudeung population, the third group of Anmyundo, Daedun, Doolyun population and the fourth group of the other five populations.

• 생명과학회지
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• 제17권11호
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• pp.1477-1481
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• 2007

한국 내 얼치기완두(Vicia tetrasperm) 집단의 교배계를 알로자임 분석으로 실시하였다. 그 결과 얼치기완두는 타가수분 또는 혼합 교배 타가수분을 영위하고 있었다. 집단 수준에서 열 개 집단에 대한 내교배 계수는 0.131에서 0.176까지로 나타나며 평균은 0.154였다. 다대립좌위에서 타가수분 계수(tm)는 열 개 집단에 대해 0.269와 0.423사이에 있으며 평균은 0.333이었다. 다대립좌위와 단일좌위에서 타가수분 계수 차이는 상당히 높게 나타났으며 양친과의 근친교배가 유의하게 일어나고 있었다. 일부 집단에서 낮은 타가수분율은 광범위한 근친교배와 성숙한 개체간 격리에 기인한다. 비록 한 집단에서 이형접합체 과다가 기록되었지만 대부분 집단은 이형접합체의 결핍이 관찰되었다. 따라서 동형접합체에 대한 자연선택이 생활사를 통한 지손집단에 작용하고 있었다.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제3권4호
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• pp.191-198
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• 2022

Natural habitats of the Korean long-tailed goral (Naemorhedus caudatus) have been fragmented by anthropogenic activities in South Korea in the last decades. Here, the individual identity, genetic variation, and population differentiation of the endangered species were examined via the multiple-tube approach using a non-invasive genotyping method. The average number of alleles was 3.16 alleles/locus for the total population. The Yanggu population (1.66) showed relatively lower average number of alleles than the Inje population (3.67). Of the total 19 alleles, only seven (36.8%) alleles were shared by the two populations. Using five polymorphic out of six loci, four and six different goral individuals from the captive Yanggu (n=24) and the wild Inje (n=28) population were identified, respectively. The allele distribution was not identical between the two populations (Fisher's exact test: P<0.01). A considerably low migration rate was detected between the two populations (no. of migrants after correction for size=0.294). Additionally, the F statistics results indicated significant population differentiation between them, however, quite low (F_ST=0.327, P<0.01). The posterior probabilities indicated that the two populations originated from a single panmictic population (P=0.959) and the assignment test results designated all individuals to both populations with nearly equal likelihood. These could be resulted from moderate population differentiation between the populations. No significant evidence supported recent population bottleneck in the total Korean goral population. This study could provide us with useful population genetic information for conservation and management of the endangered species.

• Animal Bioscience
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• 제37권5호
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• pp.826-831
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• 2024

Objective: The major histocompatibility complex in chicken demonstrates a great range of variations within varities, breeds, populations and that can eventually influence their immuneresponses. The preset study was conducted to understand the major histocompatibility complex-B (MHC-B) variability in five major populations of Bangladesh native chicken: Aseel, Hilly, Junglefowl, Non-descript Deshi, and Naked Neck. Methods: These five major populations of Bangladesh native chicken were analyzed with a subset of 89 single nucleotide polymorphisms (SNPs) in the high-density MHC-B SNP panel and Kompetitive Allele-Specific polymerase chain reaction genotyping was applied. To explore haplotype diversity within these populations, the results were analyzed both manually and computationally using PHASE 2.1 program. The phylogenetic investigations were also performed using MrBayes program. Results: A total of 136 unique haplotypes were identified within these five Bangladesh chicken populations, and only one was shared (between Hilly and Naked Neck). Phylogenetic analysis showed no distinct haplotype clustering among the five populations, although they were shared in distinct clades; notably, the first clade lacked Naked Neck haplotypes. Conclusion: The present study discovered a set of unique MHC-B haplotypes in Bangladesh chickens that could possibly cause varied immune reponses. However, further investigations are required to evaluate their relationships with global chicken populations.

• 식물분류학회지
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• 제42권4호
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• pp.253-259
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• 2012

한국특산식물이며 희귀식물인 변산바람꽃(Eranthis byunsanensis)의 보전을 위해 5개 자생지 집단을 대상으로 9개의 allozyme marker를 이용하여 유전적 다양성과 구조를 분석하였다. 변산바람꽃 집단의 대립 유전자의 수(A)는 2.4개, 다형적 유전좌위의 비율(P)은 90.0%, 이형접합자의 평균 기대치($H_E$)는 0.311을 나타내어 분포 역이 넓은 특산식물과 유사하거나 다소 높은 수준의 유전적 다양도를 유지하는 것으로 나타났다. 유전적 구조분석 결과 집단간 $F_{IS}$는 양의 값을 나타내었고 집단간 유전적 분화도는 낮은 결과(0.131)를 보였다. 집단간 높은 유전적 변이, 낮은 유전적 분화, 이형접합자의 결여양상은 이 종이 최근 고립되어 서식지의 단편화를 경험했을 가능성을 제시하며 유전적 확산을 막아 집단의 근친교배율이 증가한 것으로 판단된다. 현재 마이산과 나로도 자생지는 집단의 작은 크기와 종의 생존을 위협하는 인간활동에 의해 매우 취약한 상태이다. 따라서 유전적 변이가 다소 높고 분화가 적은 변산바람꽃 집단의 합리적 보전을 위해서는 특정한 집단에 대한 보전의 우선권을 설정하는 것 보다 전체 집단을 지속적으로 유지하고 근친교배율을 낮추기 위한 노력이 요구된다.

• 한국응용곤충학회지
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• 제39권2호
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• pp.123-129
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• 2000

국내 과채류 재배단지의 뿌리혹선충 발생에 관한 조사를 위해 1997년부터 1999년까지 경북 성주군을 중심으로 경기 여주군, 경남 함안군, 충북 청원군 등에서 과채류재배지의 토양을 채집하여 식물기생선충 종류와 밀도 조사, 뿌리혹선충 암컷의 효소표현형에 의한 종 동정을 실시하였다. 경북 성주군의 185개 참외재배 포장 중 99개 포장(53.5%)에서 뿌리혹선충이 검출되었고 나선선충류(Helocotylenchus spp.)는 7개, 둥근꼬리선충류(Aphelechus spp.)는 43개, 환선충류(Criconematid)는 26개 포장에서 검출되었다. 뿌리혹선충 암컷의 Malate dehydrogenase 및 Esterase 등 2가지 효소표현형을 이용하여 한국에 분포하는 주요 4종의 동정이 가능하였다. 효소 표현형을 이용하여 성주군 선남면에서 채집된 13개 시료 중 당콩뿌리혹선충으로 동정된 것이 6포장, 고구마뿌리혹선충 5포장이었으며 2개 포장은 두 종의 혼재하는 것으로 나타났다. 성주군 초전면의 6개 포장 시료 중 4개가 땅콩뿌리혹선충, 1개가 고구마뿌리혹선충으로 동정되었으며 1포장의 뿌리혹선충은 효소표현형이 미동정 종으로 나타났다. 경기도 여주군의 참외재배단지에서는 14개 조사대상 중 당근뿌리혹선충이 11개 포장, 땅콩뿌리혹선충이 3개포장으로 당근뿌리혹선충이 우점종인 것으로 나타났다.