• Title/Summary/Keyword: 초월수

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A Comparative Study of Diverging Citation Patterns in the Disciplines of Physics and Sociology in Korea Differential Preferences according to Employment Status and Ph. D. Diploma Area (한국의 물리학과 사회학의 인용패턴 비교연구 - 전임 여부와 박사학위 취득지역을 중심으로)

  • Kang Min-Gu
    • Journal of Science and Technology Studies
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    • v.4 no.2 s.8
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    • pp.67-101
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    • 2004
  • Although the study of citation patterns is an important theme within the sociology of science, due to the fact that it is intimately related to the production, reproduction, and evaluation of knowledge, only sustained theoretical research outlining the differences of citation patterns between the hard and soft sciences has been conducted, and empirical studies nevertheless remain few and far between. The perspectives of institutionalism and constructivism have to attempted to explain different citation patterns between the hard and soft sciences as a contrast between 'what one says' and 'who one is'. Therefore, against this background this study examines the 'theoretical' controversy empirically by comparing the contrasting citation patterns of physics, as a representative of hard science, and sociology, as a representative of soft science. The results, in brief, are as follows: the citaton patterns in physics, as in sociology, vary according to the author's status within the hierarchical employment structure, i. e. whether s/he is a full-time lecturer or not, but diversity of citation patterns according to Ph. D. diploma area is unique to sociology. These results would suggest that the explanation of constructivism is more relevant in explaining variance according to the author's status in the employment hierarchy, but the approach of institutionalism is more appropriate to understanding variance due to Ph. D. diploma area. Furthermore, this implies the complex diversity of the citation patterns between the hard and soft sciences, pointing us to the more qualified conclusion that rather than having to choose between institutionalism and constructivism according to a mutually exclusive either/or logic, these two approaches can in fact be mutually complementary, and these approaches should also be applied piecemeal to different levels of phenomena. In conclusion, this comparative research enables us to assert the following two claims: firstly that physics, as a 'science in society', produces knowledge dependent on social context, and secondly that it also possesses a characteristic that transcends locality from the view of a sociology of knowledge.

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Stimme aus der Seinsquelle Hölderlins Gedicht >Andeoken< und Philosophische Hermeneutik (존재원천의 소리 - 횔덜린의 시 '회상'과 철학적 해석학 -)

  • Lee, Kyeong-bae
    • Journal of Korean Philosophical Society
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    • v.117
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    • pp.223-247
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    • 2011
  • In der vorliegenden Arbeit geht es um das Primat des Seins und die Ereignisontologie, denen der Diskurshorizont zwischen der Ontologie der philosophischen Hermeneutik und der dichterischen $Repr{\ddot{a}}sentation$ der Seinsquelle in $H{\ddot{o}}lderlins$ spekulativem Gedicht, >Andenken<, das die spekulative Philsophie als eine Philosophie ${\ddot{u}}ber$ das Wissen um Ursein vor dem Denken darstellt, zugrunde liegt. $H{\ddot{o}}lderlins$ und Hermeneutische Ontologie nimmt erstens das Ursein, das die ontologische Voraussetzung des Denkens sei, als die nicht nur logische, sondern auch temporale Quelle auf Grund der Kritik an der reflexiven Struktur des modernen Denkens an. Zweitens suchen beide die $Gesinnungsm{\ddot{o}}glichkeit$ des Urseins, das niemals ein begreifbarer Gegenstand des Denkens war, deshalb immer schon ${\ddot{u}}ber$ das Denken ${\ddot{u}}bertrefflich$ ist, auf der ontologischen Seite aus der selbstnegierenden Bewegung des Seins, auf der erkenntnistheoretischen Seite aus dem sprachlichen Ausdruck des Seins: Insofern das reflexive Denken die analytische Unterscheidung zwn Prinzip hat, ist das Ursein deshalb der logische Ursprung des analytischen Denkens, weil das Unterschiedene aus dem Einen geteilt wird. Und das Ursein ist deshalb auch die geschichtsphilosophische Arsche, weil das Viele die geschichtliche Selbstentwicklung des Einen ist. Aus dessen Grund $l{\ddot{a}}sst$ das Sein, das allem vorausgeht, mit seiner geschichtlichen Selbsterscheinung als negativer $Selbstverkl{\ddot{a}}rung$ und darnit zugleich mit dem sprachlichen Ausdruck als der epischen Symbolisierung solcher Ereignissen sich selbst als etwas sein. Das Wort des Verstandes, das nur die Negationsbewegung der Analyse ist, kategorisch einbegrenzt ist, kann daher nicht das Verweilen bei dem Geschehen der $urspr{\ddot{u}}nglichen$ Seinsquelle sein. Das dichterische Wort, das der Stimme aus der Seinsquelle $zugeh{\ddot{o}}rig$ ist, ${\ddot{u}}bersetzt$ die Selbstbewegung des Urseins auf den hermeneutischen Sinnhorizont, in dessen Spielraum das Ursein sich selbst aussagt. $Schlie{\ss}lich$ hoffe ich damit, in dieser Arbeit davon ${\ddot{u}}berzeugend$ vorderseite zu legen, dass $H{\ddot{o}}lderlins$ Gedicht, >Andenken< nicht nur die poetische Gesinnung auf die Seinsquelle, sondern auch die hermeneutische Ontologie der Seinsquelle ist.

An Aesthetic on painting style of Yumin Painter in Late Ming and Early Qing Dynasty - Focuse on the Paldaesanin and Seokdo - (명말청초(明末淸初) 유민화가(遺民畵家)의 화풍(畵風)에 나타난 예술심미 - 팔대산인(八大山人)과 석도(石濤)를 중심으로-)

  • Kim, Doyoung
    • The Journal of the Convergence on Culture Technology
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    • v.5 no.3
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    • pp.61-70
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    • 2019
  • The painting group of Late Ming and Early Qing Dynasty is an era of confusion between the orthodox who faithfully cooperated with the Qing Dynasty and the individualist who had a hostile attitude. The country was ruined by these dynasties, and the family left the real world with the suffering of the breakdown and stayed in the mountains.Paldaesanin and Seokdo, the representative Yumin painters, did not form any a sect as a unique expression style for finding a true self.And, through his work, he expressed on madness and oddity through new ideas and composition that he feels misery and anger in his heart. The paintings of these paintings had semi-normative and impromptuous views of nature, which even the self burdened with grief was forgotten.And I expressed my own individuality and originality by forming a simple and free, on madness and oddity art aesthetic. The paintings of these paintings had semi-normative and impromptuous views of nature, which even the self burdened with grief was forgotten.And I expressed my own individuality and originality by forming a simple and free, on madness and oddity art aesthetic. Paldaesanin portrayed a strange figure with a spirit of resistance and a sad and angered emotion, through a unique technique of painting.The content is cynical, satirical, ironic, and on madness and oddity. On the other hand, Seokdo explained "ilhoeg" that the method of writing and the method of writing in "Hwaeolog" agree with each other.This has allowed us to achieve autonomy as a "rule without rules" that goes beyond the existing rules. And he delicately portrayed beauty, desire, and emotion with the use of sensuous brushes and the beauty of the colors.Their unique paintings were later conveyed to yangjupalgoe and led to the flow of paintings in the 18th century.

Production of doubled haploid population derived from the microspore culture of rapeseed (Brassica napus L.) F1 generation and analysis of fatty acid composition (유채 잡종 1세대의 소포자 배양에 의한 배가반수체 집단 선발 및 지방산 조성 분석)

  • Lee, Ji Eun;Park, Ju Hyun;Kim, Kwang Soo;An, Da Hee;Cha, Young Lok
    • Journal of Plant Biotechnology
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    • v.49 no.1
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    • pp.74-81
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    • 2022
  • Brassica napus, an oil crop that produces rapeseed oil, is an allotetraploid (AACC, 2n = 38) produced by natural hybridization between B. rapa and B. oleracea. In this study, microspore was cultured using the F1 developed from a cross between 'EMS26' line with high oleic acid content and 'J8634-B-30' lines. The flower bud size showing the nuclear development at the late uninucleate and binucleate stage with high embryogenesis rate was 2.6 ~ 3.5 mm. Microspores were cultured using only this size and after then most microspore embryo developed into secondary embryos and then regeneration plants obtained from the developed multilobe. The analysis of the ploidy of the plants revealed that 66.7% and 27.8% of the total lines were tetraploids and octoploids, respectively. The sizes of stomatal cells in tetraploids, octoploids, and diploids were 25.5, 35.6, and 19.9 ㎛, respectively, indicating that ploidy level was positively correlated with cell size. Furthermore, 62 tetraploid doubled haploid (DH) lines were selected. The average oleic acid (C18:1) and linolenic acid (C18:3) concentrations of DH were 72.3% and 6.2%, respectively. Oleic acid and linolenic acid concentrations exceeded the two parental values in 5 and 14 DH lines, respectively, suggesting that these two fatty acids had transgressive segregation. Therefore, the DH population can be utilized for the biosynthesis of unsaturated fatty acids in rapeseed and related genes. It can also be used as a breeding material for varieties with high oleic acid concentrations.

The Family and Individual in the Transmedia Storytelling of Young Adult Narratives (청소년서사의 트랜스미디어 스토리텔링에 나타나는 가족과 개인)

  • Chung, Hye-Kyung
    • Journal of Popular Narrative
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    • v.27 no.2
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    • pp.215-262
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    • 2021
  • This thesis focuses on Wandeuki and Elegant Lies - novels written by Kim Ryeo-reong and adapted into the film by Director Lee Han; this thesis analyzes the process of storytelling being transformed as the media is converted. Also, this thesis discusses cultural-political implications of transmedia storytelling where different narrative responses coexist concerning post-IMF family disorganization and "individualization." First of all, this thesis critically reviews existing discourses on the concept of transmedia storytelling and refers to 'transfictionality' the narratological concept of Marie-Laure Ryan in order to look into media conversion storytelling that starts from original novels. The novels Wandeuki and Elegant Lies show two aspects of "individualization" that adopts existential conditions of family disorganization. Wandeuki deviates from patriarchal family romance through self-discovery and exhibits loose family bond, which is something similar to companionship of close individuals. Elegant Lies shows individualization of pain by portraying a teenager who found herself completely isolated, while showing that it is impossible for the people left behind to mourn. On the other hand, director Lee Han's films and show stories in which family members, who are confronting family dissolution, rediscover and restore their families against family dissolution. The film promotes the expansion of family community through multicultural identity, and the film completes condolence of the people left behind by having the remaining families survive as survivors of suicide. The storyworld of the novels puts emphasis on 'self-discovery' of individual adolescents, while the storyworld of the movies puts emphasis on 'rediscovery of family'. Through transformation of storytelling - especially the redesigning of narrative structures called "modification" - transmedia storytelling shows that the relationship between media-converted texts is far from "faithful representation," but rather, shows conflicting themes and perspectives. With a reference point of 'the emergence of character' transmedia storytelling, which is predicated on the original work but aims to free itself from the original work by transforming storytelling through media conversion, opens up polyphonic storyworld by creating heterogeneous voices. In the post IMF-era, where uncertainty mounts over family dissolution and individualization, polyphonic storyworld created by transmedia storytelling provides an opportunity to experience disparate desires over individual freedom/risk and complacency toward community. We can call this the cultural-political implication of transmedia storytelling based on transferring, transcednding, and transforming.

A Study on the Prospect of Implementing a Public Common Practice of Ethics Based upon the Reordering Works of Heaven and Earth (천지공사의 공공윤리 실천전망에 관한 연구)

  • Kim, Yong-Hwan
    • Journal of the Daesoon Academy of Sciences
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    • v.28
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    • pp.37-72
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    • 2017
  • The purpose of this article is to study the prospect of implementing a public common practice of ethics based on the 'Reordering Works of Heaven and Earth.' The 'Reordering Works of Heaven and Earth' demonstrated the prospect of a public common practice of ethics through the shared public action that would connect and mediate both the public domain and the private domain. In addition, the 'Reordering Works of Heaven and Earth' of Gucheon Sangje (九天上帝) provided us with a complete transformation, meaning the opening of a new era, transforming heaven and earth from their state in the Prior World to their optimized state in the Later World. This culminates in a new manifestation of a peaceful world revealed a prosperity and the prospect of common happiness and common order for the public. In addition, the 'Reordering Works of Heaven and Earth' has a public value as a religious culture that responds to social change and social needs. The 'Reordering Works of Heaven and Earth' revealed the prospect of a public common practice of ethics, placed importance on creating a new foundation, and restoring phenomena back to its original order. The 'Reordering Works of Heaven and Earth' presented various multi-faceted, multi-layered outlets of soteriology while exploring solutions to public issues and revealing human dignity. Through the new construction of Heaven and Earth, Gucheon Sangje had intervened in projects for human relief. The public ethical indicators of 'the actor' here are in line with those of the 'Non-action Tao' of Laozi. As the cosmos enters into the new epoch, humans have living together with the previous cosmic principle. Now we can expect the Prior World to open into a different era as humans embrace a cosmic life of 'Non-action Tao.' The active conjunction of the virtues of yin and yang is an idea of horizontal communication related to reordering of the universe. The harmonious union of divine beings and human beings suggests the way of enabling vertical communication. The resolution of grievances for the mutual beneficence of life is an ethics of peace that aims at achieving coexistence and prosperity. The private realization of Tao and the completion of the Tao in the world suggest the prospect of a common practice of ethics as means of implementing human dignity.

Le Moi naturel et la cosmogonie chez Paul Valéry : au point de vue de la mythologie indienne (폴 발레리Paul Valéry의 본성적 '자아'와 우주 발생론 : 인도 신화를 중심으로)

  • JEANG, Kwangheam
    • Korean Association for Visual Culture
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    • v.23
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    • pp.463-524
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    • 2013
  • En exprimant 'la découverte de l'homme', Valéry, dans la Philosophie de la danse, représente «un plaisir qui allait jusqu'à une sorte d'ivresse, et si intense parfois, qu'un épuisement total de ses forces, une sorte d'extase d'épuisement pouvait seule interrompre son délire, sa dépense motrice exaspérée». Dans le même sens du plaisir, Jayadéva, dans son dithyrambe du Gîta-Govinda, représente la danse de Harî, une des nombreuses formes de Vichnou. Excités par le brûlant désir des jeux de la volupté, Hari et son amante Râdhâ cherchent au cours de la danse Râsa l'énergie vitale. Voilà la source du plaisir mystérieux valéryen. Ensuite l'eau, «élément essentiel de toute vie», est la mesure du temps de même que le soleil, l'eau est le principe de l'harmonie comme celui du monde. Finalement, chez Valéry, sous les diverses infleunces de l'eau mythique, la mer devient l'Océan de lait, soit le lieu de naissance, soit la substance maternelle, soit l'essence da la création universelle. Or tout au long de 「La Dormeuse」, Valéry évoque l'image de 'Vichnou-Narayana' sous l'influence de la mythologie indienne. Et sous une autre influence de Flaubert, Valéry évoque « d'étranges mondes abstraits». Malgré tout, Valéry crée lui-même, dans 「La Dormeuse」, une nouvelle image d'un monde abstrait : 'Vichnou-Narayana' couché sur un lit de lotus, porté par les replis du grand serpent Ananta, qui élève au-dessus du dieu endormi méditant, ses sept têtes formant une éspèce de dais - du sein de Narayana, richement décoré d'un collier d'étoiles et d'une couronne de pierres précieuses en forme de disque, croit un lotus qui porte Brahma dans son calice ; Lakchmi est aux pieds de son divin époux. L'épisode des dieux indiens est à un stade encore plus avancé de la destruction du symbole. Ils sont réduits à des formes symboliques obscures, non commentées et même difficilement identifiables. Le dieu rose qui mord son orteil dans une attitude à la fois mystérieuse et grotesque, c'est Vichnou qui a, selon le vichnouisme, le premier rôle dans la création du monde. Il flottait avant la création sur les eaux, couché sur une feuille de figuier, sous la forme d'un jeune enfant qui porte son pied vers sa bouche. Cette scène évoque la méditation et le repli sur soi de la divinité avant le commencement. Valéry désigne la cosmogonie particulière d'une religion bien déterminée(le vichnouisme) sans la nommer et en la vidant de son sens pouratnt capital, laissant subsister un symbole guetté par le grotesque, un dieu en enfance ; d'autre part, cette cosmogonie est télescopée et intégrée par une cosmogonie d'origine différente : le désemboîtement des trois dieux renvoie à la théorie sivaiste du Lingam, l'arbre de vie. Les dieux de la tirinité iendienne se détachent les un après les autres et il ne reste plus que la fleur sous la garde de Vichnou. Le désemboîtement des dieux paraît bien se référer à cette conception, malgré l'absence du lingam. Enfin toute la forme veille ; et tous les yeux sont ouverts.

The Great Opening of the Later World in Daesoon Thought and the World of Pre-experientialism from the Reordering Works of Heaven and Earth as Understood in Yi-Jing Studies (천지개벽의 역학적 사유에서 본 대순사상의 후천개벽과 선험주의적 세계)

  • Kim Yon-jae
    • Journal of the Daesoon Academy of Sciences
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    • v.47
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    • pp.1-37
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    • 2023
  • This essay seeks to answer the question of how best to understand Korean new religious movements (KNRMs). KNRMs have the characteristics of folk religion, ethno-religion, or popular religion. KNRMs are products of the national consciousness promoted by Korean society during the Late Joseon Dynasty at the turning point of modern Yi-Jing Studies. From the perspective of social evolutionary theory of developmental history, during that period, Joseon (Korea), like China, was faced with a double-edged sword consisting of the strength of tradition and the upheaval of modernity. If the strength of tradition depended on the Yi-Jing Studies to promote national enlightenment toward anti-imperialist aims, then it was equally the case that modernity depended on the sense of urgency to guide the people to secure livelihoods and edification regarding anti-feudalism. In this essay, the KNRMs that appeared during this transition period of Yi-Jing Studies will be a significant focus, and the worldview of Daesoon Thought will be the main focus. As one of the central topics, intensive discussion will be dedicated to the issue of the nature of pre-experientialism (先驗主義) which characterized the Great Opening (開闢). The principles of Daesoon Thought have a religious dimension of realistic awareness that guides the people's lives and edifies them. The process of the Great Opening aims to secure an ontological clock that tracks the Great Itineration of the world toward Daesoon Truth. This in turn as a process establishes the epistemological world of the Reordering Works of Heaven and Earth (天地公事) and reaches the axiological boundary of the future world. The links among the Three Realms is characterized by a pre-experientialist line that experiences the space-time nature of the universe as the Great Opening of the Later World (後天) within the framework of Heaven and Earth. Throughout this course, humans look to enjoy the infinite vitality of the universe from within their own finite vitality. Therefore, Daesoon Thought can overcome perceived reality through pre-experientialist channels such as the Great Opening of the Later World and aim for a state of self-awareness such as the Earthly Paradise. This is an attempt to participate and practice in the actual world rather than pursuing a world of transcendental ideas, and therefore, it tends to be proactive in the world rather than exhibit a passive tendency to be worldliness. In conclusion, the truth of Daesoon Thought, which is characterized by the Great Opening of the Later World, contains a future-oriented outlook that longs for a Nextopia full of hope and promise rather than idealistic fancy towards a Utopia or well-founded dread and disdain towards Dystopia.

Genetic Analysis of Quantitative Characters of Rice (Oryza sativa L.) by Diallel Cross (이면교배(二面交配)에 의한 수도량적(水稻量的) 형질(形質)의 유전분석(遺傳分析)에 관(關)한 연구(硏究))

  • Jo, Jae-seong
    • Korean Journal of Agricultural Science
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    • v.4 no.2
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    • pp.254-282
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    • 1977
  • To obtain information on the inheritance of the quantitative characters related with the vegetative and reproductive growth of rice, the $F_1$ seeds were obtained in 1974 from the all possible combinations of the diallel crosses among five leading rice varieties : Nongbaek, Tongil, Palgueng, Mangyeong and Gimmaze. The $F_1$'s including reciprocals and parents were grown under the standard cultivation method at Chungnam Provincial Office of Rural Development in 1975. The arrangement of experimental plots was randomized block design with 3 replications and 12 characters were used for the analysis. Analytical procedure for genetic components was followed the Griffing's and Hayman's methods and the results obtained are summarized as follows. 1. In all $F_1$'s of Tongil crosses, the longer duration to heading was due to dominant effect of Tongil and each $F_1$ showed high heterosis in delaying the heading time. It was assumed that non-allelic gene action besides dominant gene effect might be involed in days to heading character. However, in all $F_1$'s from the crosses among parents excluding Tongil the shorter duration was due to dominant gene action and the degree of dominance was partial, since dominance effects were not greater than the additive effect. The non-allelic gene interaction was not significant. Considering the results mentioned above, it was regarded that there were two kinds of Significantly different genetic systems in the days to heading. 2. The rate of heterosis was significantly different depending upon the parents used in the crosses. For instance, the $F_1$'s from Togil cross showed high rate of heterosis in longer culm. Compared to short culm, longer culm was due to recesive gene action and short culm was due to recesive gene action. The dominant gene effect was greater than the additive gene effect in culm length. The narrow sense of heretability was very low and the maternal effects as well as reciprocal effects were significantly recognized. 3. The lenght of the of the uppermost internode of each $F_1$ plant was a little lorger than these of respective parental means or same as those of parents having long internodes, indicating partial dominance in the direction of lengthening the uppermost internodes. The additive gene effects on the uppermost internode was greater than the dominance gene effect. The narrow as well as broad sense of heritabilities for the character of the uppermost internode were very high. There were significant maternal and reciprocal effect in the uppermost internode. 4. The gene action for the flag leaf angle was rather dominance in a way of getting narrower angle. However, in the Palgueng combinations, heterosis of $F_1$ was observed in both narrow and wide angles of the flag leaf. The dominant effects were greater than the additive effects on the flag leaf angle. There were observed also a great deal of non-allelic gene interacticn on the inheritance of the flag leaf angle. 5. Even though the dominant gene action on the length and width of flag leaf was effective in increasing the length or width of the flag leaf, there were found various degrees of hetercsis depending upon the cross combination. Over-dominant gene effect were observed in the inheritance of length of the flag leaf, while additive gene effects was found in the inheritance of the width of the flag leaf. High degree of heretabilities, either narrow or broad sense, were found in both length and width of the flag leaf. No maternal and reciprocal effect were found in both characters. 6. When Tongil was used as one parent in the cross, the length of panicle of $F_1$'s was remarkedly longer than that of parents. In other cross comination, the length of panicle of $F_1$'s was close to the parental mean values. Rather greater dominent gene effect than additive gene effect was observed in the inheritance of panicle length and the dominant gene was effective in increasing the panicle length. 7. The effect of dominant genes was effective in increasing the number of panicles. The degree of heterosis was largely dependent on the cross combination. The effect of dominant gene in the inheritance of panicle number was a little greater than that of additive genes, and the inheritance of panicle number was assumed to be due to complete dominant gene effects. Significantly high maternal and reciprocal effects were found in the character studied. 8. There were minus and plus values of heterosis in the kernel number per panicle depending upon the cross combination. The mean dominant effect was effective in increasing the kernel number per panicle, the degree of dominant effect varied with cross combination. The dominant gene effect and non-allelic gene interaction were found in the inheritance of the kernel number per panicle. 9. Genetic studies were impossible for the maturing ratio, because of environmental effects such as hazards delaying heads. The dominant gene effect was responsible for improving the maturing ratio in all the cross combinations excluding Tongil 10. The heavier 1000 grain weight was due to dominant gene effects. The additive gene effects were greater than the dominant gene effect in the 1000 grain weight, indicating that partial dominance was responsible for increasing the 1000 grain weight. The heritabilites, either narrow or broad sense of, were high for the grain weight and maternal or reciprocal effects were not recognized. 11. When Tongil was used as parent, the straw weight was showing high heterosis in the direction of increasing the weight. But in other crosses, the straw weight of $F_1$'s was lower than those of parental mean values. The direction of dominant gene effect was plus or minus depending upon the cross combinations. The degree of dominance was also depending on the cross combination, and apparently high nonallelic gene interaction was observed.

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Studies on Inheritance and Ecological Variation of the Culm Length and Its Related Characters in Short-Statured Rice Varieties (수도단간품종의 간장 및 관련형질의 유전과 생태적 변이에 관한 연구)

  • Sung-Ho Bea
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.13
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    • pp.1-40
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    • 1973
  • These studies were aimed at clarification of genetic and ecological variation in culm length, panicle length and plant height of the $\textrm{F}_2$ plants in some selected crosses made between semi-dwarf rice varieties and tall Japonica ones. One Indica semi-dwarf, Taichung Native 1, one Indica $\times$ Japonica hybrid, IE51 and one Japonica semi-dwarf, Tankanbaekmang were used as short-gene donors while two of medium maturity varieties, Jinheung and Kwanok and one late veriety, Palkweng were used as the corresponding counterpart of respective dwarf varieties in a series of crosses. Five different crosses, Kwanok $\times$ Tankanbaekmang, Palkweng $\times$ Tankanbaekmang, Jinheung $\times$ T(N)1, Kwanok $\times$ T(N)1 and Kwanok $\times$ IE51, were made among the above six varieties. The $\textrm{F}_2$ plants of these crosses together with the concerned parental varieties were grown under several different conditions including three levels of each nitrogen and planting space, three planting seasons and three locations in 1968, to investigate variation in length of culm and panicle, and plant height. On the other hand, the F$_3$ progenies which were derived from the shortest 10 percent of the plants of three $\textrm{F}_2$ populations, Kwanok $\times$ T(N)1, Jinheung $\times$ T(N) 1 and Kwanok $\times$ IE51 grown in the previous year, were compared each other on the basis of selection efficiency in culm length. The experimental results could be summarized as follows; 1. Genetic behavior A. It was revealed that Tankanbaekmang, one of Japonica dwarf has a simple recessive gene responsible for short culm expression, showing a typical segregation ratio of three tall to one short culm plants in $\textrm{F}_2$ generation of the crosses either with Kwanok or Palkweng. B. In the both combinations, segregation pattern of the panicle length was exactly same as that of culm length. It seems that the same gene controls both culm length and panicle length. C. No difference between segregation of culm length and plant height in the above crosses was observed. D. T(N)1, one of Indica semi-dwarf did not show such a simple genetic behavior as detected from the crosses with Tankanbaekmang in segregation of culm length but formed a continuous and normal distribution curve. Therefore, some nonallelic genic actions might be involved in expression of culm length of the counterpart varieties of T(N)1. In particular, a transgressive segregation appeared toward the direction of longer culm length in case of Jinheung $\times$ T(N)1. The genetic behavior of panicle length and plant height generally coincided with that of culm length in all the cases. E. IE51 demonstrated exactly the same genetic behavior as that of T(N)1 when this variety was crossed with Kwanok. It was clearly clarified that the simple recessive gene controlling dwarfism from T(N)1 was well incorporated into this variety. 2. Ecological variation A. In general, there was a decreasing tendency in culm length and plant height of rice plant as seeding delayed while it was not so noticeable in panicle length. The decreasing magnitude varied from variety to variety and from cross to cross. Genetic behavior of the culm length and related characters of these materials was not disturbed by the variation of seeding season, nitrogen level, planting space and experimental location. E. The elongation mode of the upper three internodes was very similar to the segregation mode of culm length, panicle length and plant height in $\textrm{F}_2$ populations of . all the crosses investigated in this study. Accordingly, this result confirmed that the roles of the upper three internodes are very important in manifesting plant stature in rice. C. The effect of nitrogen on culm length and the related other two characters seemed to be meager. However, it was true to show an increasing tendency of those characters as nitrogen level got increased from 4 kg to 12kg per l0a, with different magnitude depending upon variety or cross. D. Also, the effect of planting space on culm length, panicle length and plant height was relatively small in all the cases. Those characters varied again depending upon variety or cross. However, a general increasing tendency was detected in manifestation of those traits under denser planting space condition. E. All the parental varieties produced shorter culm, panicle and plant height when they were grown at the lower latitude locations. It might be attributed to the fact that their reproductive growth accelerated with increased temperature prevailing at the lower latitude locations such as Iri and Mi1yang. On the countrary, $\textrm{F}_2$ population reacted differently to the different locations from the parental varieties. All the $\textrm{F}_2$ plants produced the longest culm, panicle and plant at Milyang. 3. Selection efficiency A. The heritability of culm length in Kwanok $\times$ T(N)1, Kwanok $\times$ IE51 and Jinheung$\times$T(N)1 was 92 percent, 74 percent and 55 percent, respectively. B. The actual genetic advance for culm length obtained from the progeny lines of the selected plants(10 precent) from the $\textrm{F}_2$ generation, was comparable to the expected advance calculated from the original $\textrm{F}_2$ populations. As compared with the $\textrm{F}_2$ population, the $\textrm{F}_3$ plants of Kwanok $\times$ T(N)l shortened on the average by 20.8cm, those of Kwanok $\times$ IE51 did 8.7cm and those of Jinheung$\times$T(N)1 20.0cm, respectively. C. Panicle length of the populations was differently affected from one cross to another by the selection based upon culm length in $\textrm{F}_2$ Kwanok $\times$ T(N)1 did not show any noticeable shortening of its culm length due to the selection pressure. On the other hand, both Kwanok $\times$ IE51 and Jinheung $\times$ T(N)1 showed a considerable shortening of their panicles in case of selection for culm length. Based upon the above results, it could be concluded that the ecological variation in culm length, panicle length and plant height was relatively small and fallen within the range of genetic variation. Considering from the fact that the simple recessive gene governing short height of Tankanbaekmang always accompanied with some undesirable characters such as short panicle and extremely small grain, the short gene of T(N)1 seemed to be more useful as dwarf gene source since it did not carry short gene together with such undesirable traits.

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