• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.10a
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• pp.85-85
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• 2018

식물의 특성조사요령에서 조사항목을 정하는 것은 특정한 식물의 고유특성을 표현하고 새로운 품종에 대한 DUS를 확인할 수 있는 가장 중요한 과정이다. 이를 위해 참억새(Miscanthus sienesis) 품종들의 양적형질에 대한 조사결과를 각각의 특성조사 항목별로 분석하였다. 각 특성조사 항목의 측정값이 여러 품종에서 균일하게 나타날 경우 식물의 형태를 표현할 수 있는 조사항목으로 채택하는데 문제가 없으나, 그렇지 않은 경우 조사항목이 품종의 특성을 표현하기 어렵기 때문에 채택을 고려해야 한다. 이에 따라 참억새(M. sienesis) 재배종을 대상으로 양적형질의 측정값에 대해 변이계수(Coefficient of Variation)를 이용하여 균일한 정도를 확인하고 조사항목으로서의 타당성을 검토해보았다. 조사대상은 참억새 15개 재배종으로 양적특성 16개를 분석하였다. 분석결과 식물체 높이, 줄기 길이, 마디의 수, 까락 길이는 변이계수가 5%이하로 작아 양적형질을 표현하는데 있어 문제가 없으나, 마디길이와 엽초길이는 변이계수 22%에서 68% 사이로 높아 형질의 특성이라고 설명하는데 문제가 있었다. 조사항목에 대한 변이계수가 다른 특성들에 비해 높은 경우 변이의 범위가 넓어 품종의 형질이라고 판정하기 모호하기 때문에 조사항목으로의 채택은 고려해야한다. 이러한 분석결과는 향후 특성조사요령의 양적형질에 대한 특성조사항목을 결정하는 방법에 있어서 유용한 자료로 이용될 것이라 사료된다.

• Journal of the Korean Data and Information Science Society
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• v.21 no.3
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• pp.387-395
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• 2010

It is important to identify the interaction of genes about human disease and characteristic value. Many studies as like logistic analysis, have associated being pursued, but, previous methods did not consider the sub-group of the genotypes. So, QTL interactions and the GMM (genotype matrix mapping) have been developed. In this study, we detect the superior genotype combination to have an impact on economic traits of Korean cattle based on the study over GMM method. Thus, we identified interaction effects of single nucleotide polymorphisms (SNPs) responsible for average daily gain(ADG), marbling score (MS), carcass cold weight (CWT), longissimus muscle dorsiarea (LMA) using GMM method. In addition, we examine significance of the major genotype combination selected by implementing permutation test of the F-measure which was not obtained by Sachiko et al.

• Korean Journal of Plant Resources
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• v.20 no.1
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• pp.63-68
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• 2007

The purpose of this study was to applicate fundamental data for breeding new cultivar through selection of superior individuals and to investigate its nut characteristics in walnut hybrids. Selection of superior individuals with good nut qualities including high nut weight (NWT, >13g) and percentage of weight relative to total weight of nut (PWR, >50%) was carried out and then 4 promising individuals ($Sansung 4{\times}Concord-8,\;Concord{\times}Sansungl,\;Concord{\times}Sansung4\;and\;McKinster{\times}Punghan1$) were selected by quantitative characters. Especially width of pad of suture was main factor in selection of nut with high PWR (percentage of weight relative to total weight of nut) In addition, kernel length showed high correlation with kernel and nut weight. Thickness of septem (TOP) also had an effect on ease of kernel removal (EKR). In qualitative characters, there is a great difference among the individuals and cross combinations as well as showed simultaneously various characteristics in the same individual.

• Korean Journal of Plant Resources
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• v.34 no.1
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• pp.79-88
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• 2021

This research was conducted to investigate the genetic diversity and select useful accession with agronomic characteristics of garlic (Allium sativum L.). germplasms at Garlic Research Institute in Chungbuk Agricultural Research and Extension Service. Morphological diversity and relationships among 160 germplasms collected from 26 countries were assessed by methods of clustering and principal component analysis. Among 11 types of leaves and bulbs characteristics, emergence days of leaf showed the highest variation with coefficient of variation of 84.8%, and the bulb weight and the number of scales showed higher variability with 24.3%. Correlation analysis based on 11 quantitative traits showed that bulb weight and bulb length have very high positive correlation with bulb quantity. Plant height, leaf length, and number of leaves showed positive correlation with bulb weight as collections with better performance in growth produced large bulb with higher quality. The cluster analysis based on 5 principal components generated 6 clusters with an average distance of 1.6 among clusters. Domestic genetic resources were the largest with 36 species (22.5%) in group II.

• Korean Journal of Animal Reproduction
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• v.25 no.4
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• pp.295-304
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• 2001

Characterization of quantitative trait loci (QTL) was investigated in the experimental crosses between Berkshire and Yorkshire breed. A total of 525 F$_2$ progenies from 65 matting of F$_1$ Parents were produced. Phenotypic measurements included average daily gain (ADG), average back fat thickness (ABF), and loin eye area (LEA). To identify the presence of QTL for reproductive performance, birth weight (BWT) and body weight at 16 days (16DAY) were included as indirect trait. QTL segregation was deduced using 8 markers assigned to chromosome 2 (SSC2). Quantitative trait locus analyses were performed using interval mapping by regression under line-cross model. Presence of imprinting was tested under the statistical model that separated the expression of paternally and maternally inherited alleles. To set the evidence of QTL presence, significance thresholds were derived by permutation following statistical tests, respectively. Genome scan revealed significant evidence for three quantitative trait loci (QTL) affecting growth and body compositions, of which two were identified to be QTL with imprinting expression mode near the ICF II gene region. For average back fat thickness (ABF), a paternally expressed QTL was found on chromosome 2 (SSC2). A paternally expressed QTL affecting loin eye area (LEA) was found in the region of SSC2 where evidence of imprinted QTL was found for average back fat thickness (ABF). For average daily gain (ADG), QTL expressed with Mendelian mode was found on chromosome 2 (SS2). Also, QTL affecting average daily gain (ADC), was identified to be expressed with Mendelian express mode.

• Korean Journal of Plant Resources
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• v.24 no.5
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• pp.540-548
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• 2011

Characteristics of leaf morphology was examined in 11 natural populations of Acer pictum subsp. mono (Maxim.) Ohashi in Korea. Nested Anova showed that there were statistically significant differences among populations as well as among individuals within populations in all 14 quantitative characters. In all the leaf characters, variance components among individuals within populations were higher than those among populations. Some morphological characters such as the ration of Blade length to Petiole length (0.90), Uower lobe width (0.85), Blade length (0.83), and Middle lobe width (0.83) showed the relative high differences in the values of differentiation (Dij) among populations. Of the ten populations, Gwangyang (1.36) and Cheongyang (1.30) were highly differentiated based on the total mean Dij of fourteen morphological characters, while Ulju (0.30) and Jeongseon (0.44) were scarcely differentiated.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.42 no.4
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• pp.392-402
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• 1997

The morphological traits of different types of primary trisomics(2n=28＋1) in durum wheat, Triticum durum var. hordeiforme(2n=28 AABB) were compared with disomics (2n=28) through the examination of reciprocal gene action on the extra chromosomes. However it was not easy to distinguish morphologically the trisomies containing A genome from those containing B genome. These results suggested that the chromosomal location of the major genes for some morphological traits exists on homoeologous chromosome. It is important that these results revealed the homoeology and linkage groups of both A and B genomes in durum wheat. These primary trisomies will be valuable materials for the trisomic analysis and genetic mapping on the chromosome of both A and B genomes in durum wheat. Furthermore, it must be useful for the evolutionary study of Triticum durum(AABB) and Triticum squarrosa(DD) by way of the ancester species of Triticum aesitivum(AABBDD).

• Horticultural Science & Technology
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• v.29 no.6
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• pp.600-609
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• 2011

One hundred twenty two accessions of 6 species in genus Allium were collected throughout 5 regions of Korea. Their genetic relationship was investigated by using inter simple sequence repeat (ISSR) markers. The morphological analysis was measured for 6 quantitative and quantified for 1 qualitative trait. ISSR analysis obtained a total of 370 polymorphic bands by using seventeen primers. The cluster analysis of genus Allium based on morphological data could identify three groups. The accessions of Allium belonged to the Allium monanthum clustered into five groups at genetic distance ranging from 0.94 on the base of ISSR analysis. Correlation analysis between morphological and ISSR analysis showed low coefficient(r = 0.036). These markers are thought to be used in research of molecular markers for classification and cross breeding of Allium monanthum and A. grai.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.37 no.3
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• pp.250-256
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• 1992

This study was carried out to obtain basic genetic informations in pea(Pisum sativum L.). A series of field experiments were carried out with seven pea cultivars and F$_1$ hybrids for three years. Based on the information collected from a set of diallel crosses, the behaviours of inheritance of seed yield and ten major agronomical characters were observed by the estimation of heterosis and combining ability. Heterosis for seed yield per plant was 79% and those for yield components such as number of seeds per plant, number of pods per plant, stem length, stem diameter, number of branches per plant, also showed relatively high values. General combining ability(GCA) and specific combining ability(SCA) were significantly different among major agronomic characters, and the variances of GCA were higher than those of SCA latter. Among the tested cultivars, Alderman was found to be the most promising parent based upon the GCA effects on the seed yield and yield components. The crosses of Sugar Ann$\times$Alderman, Wando$\times$Alderman and JI 1198$\times$Chinju ＃6, showed the highest SCA effects on seed yield and yield components.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2020.12a
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• pp.51-51
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• 2020

콩의 원산지는 만주를 중심으로한 동북아시아를 원산지로 추정하고 있으며, 동아시아인 한국, 중국, 일본의 주요 식재료로 다양하게 이용되어왔다. 콩은 단백질과 지방의 공급원으로서 뿐 아니라 최근에는 콩의 생리활성 물질이 항암효과, 골다공증, 신장질환과 같은 질병예방에도 효과가 있는 것으로 알려지면서 활용가능성이 높아지고 있다. 본 연구는 유전자원센터에 보존 중인 콩 수집단에서 농업형질, 기초정보 등을 토대로 핵심집단을 작성하고 그 중 한국, 중국, 일본 수집단 각 425, 93, 42자원의 개화일수, 생육일수, 주당협수, 100립중, 주당수량과 같은 양적형질을 비교하였다. 개화일수와 생육일수는 중국수집 자원에서 평균38일, 107일로 가장 빠르며, 한국수집 자원은 평균 53일, 127일로 가장 늦었다. 협당립수는 중국수집 자원에서 협당 평균3립으로 가장 많았으며, 한국과 일본 수집자원은 각 2.3과 2.4립으로 유사하였다. 주당협수는 한국 수집자원에서 주당 평균 327.4개로 가장 많고 일본이 248.0개 중국이 224.4순으로 조사되었다. 100립중은 일본 수집 자원이 평균 33.6g으로 대립이 많고 한국 26.5g , 중국 21.1g 이었다. 주당수량은 한국 수집자원이 평균 119.8g, 일본 84.2g, 중국 76.8g순이었다. 이들 5개 양적형질을 토대로 군집분석한 결과 한국 자원은 대다수가 C3 그룹에 속하고, C1 그룹에 일부가 속하였으며, 일본 자원은 C3 그룹과 C2 그룹에, 중국 자원은 C2 그룹에 속하여 한국과 일본자원이 유사하고 중국자원과는 차이를 보이는 것으로 나타났다. 이러한 특성조사 결과는 자원의 수집, 도입시 다양성 확보를 위한 기초정보로 이용할 수 있다.