벼 밀양 23호$\times$기호벼의 재조합 자식계통에서 초기급속등숙과 미질 특성

곽태순,여준환 한국작물학회 2004 Korean journal of crop science Vol.49 No.3

벼 M/G RIL 162 계통에 대한 초기급속등숙율에 대한 이화학적특성 및 색차색도특성 변이에 대한 주성분분석 및 유전력분석의 결과를 요약하면 다음과 같다. 1. 초기급속등숙율이 41% 이하인 계통군은 164계통중 74계통이었으며, 41∼60%의 계통군에는 32계통이 있었다. 또한, 초기급속등숙율이 빠른 계통군에 속하는 61∼80%사이에는 24계통이 있었으며, 초기급속등숙율이 매우 빠른 계통군으로 분류되는 81% 이상인 계통은 32계통이 있었다. 2. 벼 M/G RIL 164계통에 대한 품종군별 이화학적특성을 보면, 초기급속등숙을이 40% 이하인 계통군이 단백질 함량이 9.1%로 가장 높았으며, 지방산함량은 초기급속등숙율이 61∼80%의 계통군에서 26.5KOHmg/100g으로 가장 높게 나타났다. 또한, 곡립형태에 있어서 현미길이는 41∼60%사이의 초기급속등숙율을 보인 계통군이 5.40mm로 가장 짧았으며, 81% 이상인 계통군이 1.80mm로 현미두께가 가장 두꺼웠으며, 현미의 형태를 나타내는 현미 길이/넓이 비에 있어서는 41∼60%사이의 계통군이 2.18로 나타났다. 3. 호화온도와 깊은 관련이 있는 알카리붕괴도에 있어서는 초기급속등숙율이 61∼80%사이가 3.40으로 가장 붕괴가 되지않는 계통군으로 나봤으며, 81%이상인 계통군은 4.31로서 붕괴가 가장 잘 되는 것으로 나타나 81%의 계통군이 호화온도가 낮은 것으로 나타났다. 4. 화학적특성, 색차색도특성 및 알카리붕괴도를 이용한 벼M/G RIL 164 계통에 대한 주성분분석의 결과 제 1주성분은 약 3.6개의 형질을 포함하고 있었으며, 제 2주성분은 약 2.1개의 형질을 포함하고 있는 것으로 밝혀졌다. 또한, 제 1주성분은 전체 변동에 대한 기여율은 약 36%이었으며, 제 4주성분까지의 전체 변동에 대한 누적 기여율은 86.4%로서 설명이 가능함을 알 수 있었다. 5. 벼 M/G RIL 164 계통의 품질평가치, 단백질함량, 아밀로오스함량, 지방산함량, 명도, a-value, b-value, 채도, 색상 및 알카리붕괴도 등의 형질에 대한 유전력 검정의 결과, 품질평가치의 유전력은 87.89%로 가장 높은 유전력을 나타내었으며, 단백질함량 > 알카리붕괴도 > 지방산함량 > 아밀로오스함량 > 색상 > 명도 > a-value > b-value의 순으로 나타났으며, 채도의 유전력은 30.62%로 가장 낮음을 알 수 있었다. This study was carried out to get the basic informations regarding the varietal variations for the physicochemical properties such as protein content, amylose content, fatty acid content, grain quality values and color properties such as lightness value, chroma and hue for the 164 recombinant inbred lines(RILs) of Milyang 23 and Gihobyeo(M/G) at the experimental farm in the Sangji University. The principal component analysis and heritability study were conducted for this experiments. The rapidity of grain filling(RCF) for the 164 M/G RILs could be classified into four groups such as slow maturing group less than 41%, mid-slow maturing group 41∼60%, fast maturing group 61∼80% and very fast maturing group more than 81% based on the rapidity of grain filling rate. The slow maturing group of RGF showed a little bit higher protein content 9.1%, compared to the other RGF groups. However, the amylose content of all the RGF groups revealed the same content by the groups. The very fast maturing group of RGF showed longer grain length in brown rice compared to other RGF varietal groups, in case of grain width in brown rice showed shorter than any other groups. The alkali digestive value which was so much related to gelatinization temperature showed 3.40 degree at fast maturing group of RGF in M/G RILs. However, the very fast maturing group of RGF revealed 4.31 degree of alkali digestive value. The principal component analysis was performed by the chemical and color properties such as quality value, protein content, amylose content, alkali digestive value, fatty acid content, lightness value, chroma and hue for M/G RILs. The first principal component was able to explained upto 36% to total informations. It was corresponded to quality value, protein content, amylose content, fatty acid content, lightness value and a-value(green -1 red). The characters regarding grain quality showed high heritable properties more than 75% of heritability, but color characters appeared relatively lower heritability compared to grain quality.

The C- and G-value paradox with polyploidy, repeatomes, introns, phenomes and cell economy

Ik‑Young Choi,Eun‑Chae Kwon,Nam‑Soo Kim 한국유전학회 2020 Genes & Genomics Vol.42 No.7

Background The apparent disconnection between biological complexity and both genome size (C-value) and gene number (G-value) is one of the long-standing biological puzzles. Gene-dense genomic sequences in prokaryotes or simple eukaryotes are highly constrained during selection, whereas gene-sparse genomic sequences in higher eukaryotes have low selection constraints. This review discusses the correlations of the C-value and G-value with genome architecture, polyploidy, repeatomes, introns, cell economy and phenomes. Discussion Eukaryotic chromosomes carry an assortment of various repeated DNA sequences (repeatomes). Expansion of copies of repeatomes together with polyploidization or whole-genome duplication (WGD) are major players in genome size (C-value) bloating, but genomes are equipped with counterbalancing systems such as diploidization, illegitimate recombination, and nonhomologous end joining (NHEJ) after double-strand breaks (DSBs). The lack of these efficient purging systems allowed the accumulation of repeat DNA, which resulted in extremely large genomes in several species. However, the correlation between chromosome number and genome size is not clear due to inconsistent results with different sets of species. Positive correlations between genome size and intron size and density were reported in early studies, but these proposals were refuted by the results with increased numbers of species, in which genome-wide features of introns (size, density, gene contents, repeats) were weakly associated with genome size. The assumption of the correlations between C-value and gene number (G-value) and organismal complexity is acceptable in general, but this assumption is often violated in specific lineages or species, suggesting C- and G-value paradoxes. The C-value paradox is partly explained by noncoding repeatomes. The G-value paradox can also be explained by several genomic features: (1) one gene can produce many mature mRNAs by alternative splicing, and eukaryotic gene expression is highly regulated at both the transcriptional and translational levels; (2) many proteins exert multiple functions during development; (3) gene expansion/contraction are frequent events in the gene family among evolutionarily close species; and (4) sets of homeotic genes regulate development such that organismal complexity is sometimes not clear among organisms. A large genome must be burdensome in terms of cell economy, such that a large genome constraint results in the distribution of genome sizes skewed to small genomes. Moreover, the C-value can affect the phenome. A strong positive correlation has been recognized between genome size and cell size, but the relationship is weak or null with higher-level traits. Additional analyses of the relationship between the C-value and phenome should be carried out, because natural selection acts on the phenotype rather than the genotype. Conclusions Dramatic advancement in genomics has given some answers to the C-value and G-value paradoxes. We know the mechanisms by which the current genomes have been constructed. However, basic questions have not yet been fully resolved. Why have some species retained small genomes yet some closely related species have large genomes? Random genetic drift and mutational pressure might have affected for genome size in the limited population size during evolution; thus, genome size may be quasiadaptable rather than the best adaptive trait.

Understanding Customer Intention to Adopt Sustainable IT Products through Two Dimensional Value Structure and Perceived Sustainability

Kwon, Ohbyung,Song, Myung Sup The Korea Society of Management Information System 2012 Asia Pacific Journal of Information Systems Vol.22 No.3

As sustainability has grown into a key global issue, more and more information technology (IT) products have adopted these concepts to attract consumers. However, these products potentially require consumers' physical or economic sacrifice at least for a short period of time. Therefore, the reason of consumers' adoption of sustainable IT products cannot be fully explained by the two traditional values: hedonic and utility values. However, expectancy-value theory, which has been used to explain the relationship between value and behavior, still takes hedonic value and utility value into consideration. The purpose of this study is to suggest an amended expectancy-value theory to better explain the adoption of IT products that consider sustainability. For this purpose, two social values-the normative value based on the Schwartz's model of moral norm and the eudemonic value of the Stoic philosophy-were added to the individual values to examine which value particularly influences the adoption of sustainable IT products. In addition, the moderating effect of perceived sustainability between four values and adoption of sustainable IT products was verified.

Energy demand analysis according to window size and performance for Korean multi-family buildings

Jung-Ho Huh,Sun-Hye Mun 대한건축학회 2013 Architectural research Vol.15 No.4

Special attention is required for the design of windows due to their high thermal vulnerability. This paper examines the problems that might arise in the application of the u-value, by reflecting the changes in the u-value of the window, depending on the window-to-wall ratio obtained in an energy demand analysis. Research indicates that the u-value of a window increases with an increase in the difference between the u-values of the frames and the glass. Relative to the changes in the u-value of the windows, the energy demand varied from 1.3% to 9.3%. Windows with a g-value of 0.3 or 0.5 displayed a higher energy demand than windows with a g-value of 0.7. Therefore, when the difference between the performance of the glass and the frame is significant, especially when the g-value is small, a modified heat transmission coefficient should be applied to the window size during the evaluation of the building energy demand.

외피 투과체 변화에 따른 G-value 평가에 관한 연구

김동균(Kim Dong-Kyun),윤갑천(Yoon Kap-Chun),최경석(Choi Gyeong-Seok),김강수(Kim Kang-Soo) 한국건축친환경설비학회 2010 한국건축친환경설비학회 학술발표대회 논문집 Vol.2010 No.10

The purpose of this paper is to calculate monthly G-value when changing the glazing and shading device. For this study, e-Quest which is developed by Department of Energy in U.S.A performed the simulation for vertical solar radiation, transmitted solar radiation through windows and the secondary heat flow. Among the design factors of a building skin, high performance glazing, overhangs, venetian blind, and roller blind were used in the simulation. In addition, venetian blind, and roller blind were located at the inner side of the window. In light of the result, monthly G-value was the highest in July in summer for the reason of the rainy season. However, monthly G-value has increased in winter because of low incident angle.

Energy demand analysis according to window size and performance for Korean multi-family buildings

Huh, Jung-Ho,Mun, Sun-Hye Architectural Institute of Korea 2013 Architectural research Vol.15 No.4

Special attention is required for the design of windows due to their high thermal vulnerability. This paper examines the problems that might arise in the application of the u-value, by reflecting the changes in the u-value of the window, depending on the window-to-wall ratio obtained in an energy demand analysis. Research indicates that the u-value of a window increases with an increase in the difference between the u-values of the frames and the glass. Relative to the changes in the u-value of the windows, the energy demand varied from 1.3% to 9.3%. Windows with a g-value of 0.3 or 0.5 displayed a higher energy demand than windows with a g-value of 0.7. Therefore, when the difference between the performance of the glass and the frame is significant, especially when the g-value is small, a modified heat transmission coefficient should be applied to the window size during the evaluation of the building energy demand.

Energy demand analysis according to window size and performance for Korean multi-family buildings

허정호,문선혜 대한건축학회 2013 Architectural research Vol.15 No.4

Special attention is required for the design of windows due to their high thermal vulnerability. This paper examines the problems that might arise in the application of the u-value, by reflecting the changes in the u-value of the window, depending on the window-to-wall ratio obtained in an energy demand analysis. Research indicates that the u-value of a window increases with an increase in the difference between the u-values of the frames and the glass. Relative to the changes in the u-value of the windows, the energy demand varied from 1.3% to 9.3%. Windows with a g-value of 0.3 or 0.5 displayed a higher energy demand than windows with a g-value of 0.7. Therefore, when the difference between the performance of the glass and the frame is significant, especially when the g-value is small, a modified heat transmission coefficient should be applied to the window size during the evaluation of the building energy demand.

Understanding Customer Intention to Adopt Sustainable IT Products through Two Dimensional Value Structure and Perceived Sustainability

권오병,송명섭 한국경영정보학회 2012 Asia Pacific Journal of Information Systems Vol.22 No.3

As sustainability has grown into a key global issue, more and more information technology (IT) products have adopted these concepts to attract consumers. However, these products potentially require consumers’physical or economic sacrifice at least for a short period of time. Therefore, the reason of consumers’ adoption of sustainable IT products cannot be fully explained by the two traditional values: hedonic and utility values. However, expectancy-value theory, which has been used to explain the relationship between value and behavior, still takes hedonic value and utility value into consideration. The purpose of this study is to suggest an amended expectancy-value theory to better explain the adoption of IT products that consider sustainability. For this purpose, two social values-the normative value based on the Schwartz’s model of moral norm and the eudemonic value of the Stoic philosophy-were added to the individual values to examine which value particularly influences the adoption of sustainable IT products. In addition, the moderating effect of perceived sustainability between four values and adoption of sustainable IT products was verified.

Corporate Governance and Firm Value: The Impact of Chinese Companies’ Corporate Social Responsibility

김동순,여은정,장영애 서울대학교행정대학원 2017 The Korean Journal of Policy Studies Vol.32 No.2

We investigate whether the corporate social responsibility (CSR) of Chinese companies has a certain impact on firm value, and further, depending on the level of corporate governance, how the impact of CSR on firm value changes. First, CSR activities generate a positive effect on firm value suggesting that companies may have an incentive to be willing and to continue to perform their CSR activities. Second, if the ratio of the largest shareholder’s stake is low (high) or the gap between the largest and the second-largest shareholder’s stakes is small (large), CSR activities lead to a significant positive (negative) impact on firm value. Third, we find a positive impact for firms with high management or auditor ownership and for firms whose CEO and chairman of the board are not the same person. Interestingly, due to the fact that significant numbers of outside directors of Chinese companies are appointed by the largest shareholders in China, CSR activity may be used to better align the company with the private interests of the largest shareholders than with the interests of other shareholders, thus lowering firm value. Lastly, if the company’s largest shareholder is the country government, CSR has a positive impact on firm value. In this case, the largest shareholder—the country government—carries out CSR activities for social benefit because such a benefit is naturally aligned with the country’s interests in the company. This paper also sheds light on Chinese companies’ corporate governance structure that enhances socially responsible activities and firm value. Our results suggest that good governance provides incentives to voluntarily and continuously perform socially responsible activities.

재배환경과 유전형의 상호작용에 따른 토마토 과실 품질 변화

박민우(Minwoo Park),정용석(Yong Suk Chung),이상협(Sanghyeob Lee) 한국원예학회 2017 원예과학기술지 Vol.35 No.3

토마토(Solanum spp.)는 라이코펜, 플라보노이드, 글루타민산, β-카로틴 등의 풍부한 항산화 물질을 많이 함유하고 있어 건강채소로서 많은 주목을 받고 있다. 또한 토마토는 세계적인 작물로서 재배법 개선과 품종개량 등에서 많은 연구가 이루어 졌으나 국내에서는 수확량에 중점을 둔 재배를 하고 있다. 따라서 우수한 형질의 특성을 가지고 있는 품종이라도 재배지역과 방법에 따라 그 특성이 제대로 나타나지 않는 경우가 많다. 이에 10점의 품종을 이용하여 품종과 환경에 따른 라이코펜의 함량을 조사하였다. 10점의 공시재료들은 2007년부터 2014년도에 이르기 까지 농업회사 법인 현대종묘(주)에서 육성한 토마토 계통 8점과 대조품종으로 Syngenta(Basel, Switzerland)의 Defnis와 University of Florida (Gainsville, FL, USA)에서 개발한 Tasti-Lee를 사용하였다. 라이코펜 함량은 여주지역의 봄에서 여름에 걸친 하우스 재배에서 HTL3137이 70.48 ㎎·㎏<SUP>-1</SUP>으로 가장 높았으며 수원지역의 봄에서 여름에 걸친 노지재배에서 HTL10256이 20.9 ㎎·㎏<SUP>-1</SUP>으로 가장 낮게 나타났다. 색 구성요소와 라이코펜 함량의 상관관계는 재배 지역별과 유전형에 차이를 보였는데 수원 지역 봄에서 여름 기간의 노지재배에서는 뚜렷한 상관관계를 찾기 힘들었으나, 여주지역의 봄에서 여름기간에 걸친 재배에서는 B의 요인이 라이코펜 함량 상관관계를 보였으며 가을에서 겨울에 걸친 재배 작형에서는 G, Luminosity, L<SUP>*</SUP>, Hue의 요소가 토마토 과실의 라이코펜 함량에 영향을 주는 것으로 나타났다. MINQUE를 이용한 유전형, 재배환경 그리고 유전형×재배환경(genotype×environment, G×E) 상호작용을 분석한 결과 라이코펜 함량을 좌우하는 변수는 유전형이 51.33%로 가장 많은 영향을 미쳤으며 환경변수가 49.13% 그리고 G×E가 21.43%로 산출되었으나 AMMI을 이용한 분석에서는 G×E가 차지하는 요인이 가장 높았으며 유전형과 환경조건이 각각 그 뒤를 따랐다. Bred and grown around the world, tomato (Solanum spp.) has highly valuable fruits containings various anti-oxidants such as lycopene, flavonoids, glutamine, and β-carotene. Several studies have explored, way in which to enhance the growth, management and quality of tomato, we focus on the management of growth for yield rather than quality. The expression of superior agronomic traits depends on where cultivars are grown. We evaluated 10 cultivars grown in three environment for their lycopene. HTL3137 (70.48 ㎎·㎏<SUP>-1</SUP>), which was grown in Yoeju in spring/summer, contained the highest lycopene content, while HTL10256 (20.9 ㎎·㎏<SUP>-1</SUP>), which was grown in Suwon in spring/summer, contain the least lycopene.Correlations between color components and lycopene content varied according to growing location and season. In spring/summer-grown tomatoes from Suwon, no significant correlation was observed between any color component (redness [R], greenness [G], blueness [B], luminosity, L<SUP>*</SUP>, a<SUP>*</SUP>, b<SUP>*</SUP>, hue and chroma) and lycopene content. A correlation was observed between B and lycopene content in tomatoes grown in Yeoju during the same season. In tomatoes grown in Yeoju in fall/winter, significant correlations were found between lycopene content and G, luminosity, L<SUP>*</SUP>, and hue. Variance in interactions between genotype, environment, and genotype × environment (G × E) using Minimum Norm Quadratic Unbiased Estimate (MINQUE) analysis indicated that lycopene content depends on genotype (51.33%), environment (49.13%), and G × E (21.43%). However, when the Additive Main Effects and Multiplicative Interaction (AMMI) was used, the G × E value was highest.