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金濟桓,林鉉基 전북대학교 농업과학기술연구소 1984 農大論文集 Vol.15 No.-
As a basic research in Schizandra chinensis Baillon breeding, embryological investigation of female gametophyte formation was carried out on S. chinensis. The followings are some of the major findings of the research: 1. The carpel is single and the ovary is apocarpous ovary. 2. The placenta is parietal placenta with a carpel and loculut 3. The ovule became amphitropous and the campylotropous. 4. The integument is two and thick integument. 5. The initial cell of nucellus develops and becomes megaspore mother cell. 6. The tetrad of megaspore is linear tetrad. 7. Micropyle megaspore develops and becomes megaspore. 8. The embryo sac is monosporic 4-nucleate Oenothera type. 9. The nucellus in embryo sac disintegrates, degenerates and disappears in the stage of matured embryo sac. 10. The egg apparatus of matured embryo sac is completed at blooming.
金濟桓 전북대학교 농업과학기술연구소 1973 農大論文集 Vol.4 No.-
Male gametophyte formation of Citrus junos which has been cultivated and distributed in the southern coast of Korea was investigatpd. The results are as follows : 1.The anther is tetraspororangiate surrounded by persistent epidermis 2. The endothecium develops fibrous thickening layers. 3. The 2∼3 middle layers are ephemerl 4. The tapetum is 2~3 layers of glandular tapetum, the cells of which frequently become 2-multinucleate, with occasional nuclear fusions. 5. The meiosis of the microspore is regular. 6. The microspore tetrads are tetrahedral type. 7. The microspores separated from microspore tetrad are foardripartition. 8. The quardripartitions becomes gradually round until flowering. 9. The wall of microspore consists of two distinct layers with the thickend exine and thin intine.
金濟桓,金賢順 전북대학교 농업과학기술연구소 1980 農大論文集 Vol.11 No.-
Present experiment was investigated in order to make clear the historical mechanism of male-sterile potato. The result obtained were summarized as follows : 1. The formation of microspore of male-fertile flower is normal. 2. In male-sterile flower the tapetum hypertrophy proceeds noticeably from drad stage of microspore mother cell. 3. Tapetum tissue develops such hypertrophy that microspore of the male-sterile flower could not grow up fertile pollen and it become sterile-pollen.
金濟桓,金賢順,殷種旋 전북대학교 농업과학기술연구소 1982 農大論文集 Vol.13 No.-
In order to find the effect of NAA and kinetin on callus formation and organ differentiation, meristem tissues of garlic were cultured in Barlter's medium with various levels of NAA and kinetin. The results obtained were as follows: Growth of shoots and adventitious roots were found to be the best in the media without growth regulators or with 0.2㎎/ℓ NAA plus 2.0㎎/ℓ kinetin. Calluses were formed vigorously in the medium with 2.0㎎/ℓ NAA plus 0.2㎎/ℓ kinetin, but there was no observation of callus formation in the medium without growth regulators. The formation of chlorophyll was observed in all the media, and to be the best in the medium with 0. 2㎎/ℓ NAA plus 2.0㎎/ℓ kinetin.
金濟桓 전북대학교 농업과학기술연구소 1976 農大論文集 Vol.7 No.-
In order to investigate the variation of the quantitative characters and their correlations of 20varieties of upland rice, the rice was planted by the four replication randomized-block-design method and by the one-plant planting method in the experimental farm of Jeonbug national university on the 20th of June, 1975, and was harvested on the 22th of Oct., 1975. The author investigated the correlations of the qualitative characters shown. By analyzing the relationship of these characters to the yield, it has become easy to discover the high yield varieties. The results can be summarized as follows : 1. The factors that determined the yield of upland rice were not only the number of stems, the number of panicles, and the health of the rice plant but also the length of panicles and grain weight. 2. The longer the panicle was, the greater the number of grains. 3. There was a tendency of negative correlation between the number of stems or the number of panicles and grain weight. The more stems the variety had, the lighter its grain was. 4. It was found that there is little correlation between the number of grains and the yield in upland rice. 5. Katenwase, Kokukou, Nakabara, Housenjiyobouruchi, Seikokutaiou, ,and Rikutoukanto # 72 were found to be high-yield varieties.
金濟桓,玄東允,梁海鵬 전북대학교 농업과학기술연구소 1986 農大論文集 Vol.17 No.-
1. The flower is complete, the inflorescene is betrys, and perianth is composed of gamosepalous and polypetalous. 2. The anther is tetrasporangiate ; the anther wall is made of epidermis, endothecium, middle layer and tapetum tlssue. 3. Meiosis of microspore mother cell is normal and tetrad is tetrahedraltype. 4. The carpel Is single and the ovar is compound. 5. The placenta Is parietal and marginal placenta with one carpel and one loculus. 6. The ovule becomes anatropous through campylotropous. 7. The integument is single and thick integument. 8. The initial cell of nucellus deuelops and becomes megaspore mother cell. 9. The tetrad of megaspore is linear tetrad. 10. Chalazal megaspore develops and becomes megaspore mother cell. 11. The embryo sac is monospore 8―nucleate polygonum type. 12. The nucellus in embryo sac disintegrates, degenerates and disappears in the stage of matured embryosac. 13. Meiosis of microspore ends 3∼4 days before blooming. 14. The egg apparatus of matured embryo sac is completed 2∼3 days of blooming.
金濟桓 전북대학교 농업과학기술연구소 1978 農大論文集 Vol.9 No.-
As a basic research in potato breeding, embryological investigation of male and female gameto phyte formation was carried out on cultivar. Shimabara. The following are some of the major findings of ther esearch: 1. The flower is complete, the inflorescence is cyme, and perianth is composed of famopetal ous and gamosepalous. 2. The anther is tetrasporangiate; the anther wall is made of epidermis, endothecium, middle layer and tapetum tissue. 3. Meiosis of microspore mother cell is normal and tetrad is tetrahedral type. 4. The carpel is double and the ovary is compound. 5. The placenta is axile placenta with two carpels and two loculus. 6. The ovule becomes anatropous through campylotropous. 7. The integument is a single and thick integument. 8. The initial cell of nucellus dvelops and becomes megaspore mother cell. 9. The tetrad of megaspore is linear tetrad. 10. Chalazal megaspore develops and becomes megaspore mother cell. 11. The embryosac is monosporic 9-nucleate polygonum type. 12. The nucellus in embryosac disintegrates, degenerates and disappears in the stage of matured embryosac. 13. Meiosis of microspore ends two weeks before blooming. 14. The egg apparatus of matured emdryosac is completed two or three days of blooming.
金濟桓,梁海鵬,林鉉基 전북대학교 농업과학기술연구소 1985 農大論文集 Vol.16 No.-
As a research in Lycium chinense MILL breeding, Cytological and historogical investigation of male gametophyte formation of normal flower and of mechanism of pollen degeneration was carried out on L. chinense. The following are some of the major findings of the research: 1. The flower is complete flower. 2. The anther is tetrasporangiate : the anther wall is made of epidermis, endothecium, middle layer and tapetum. 3. Meiosis of microspore mother cell of fertile flower is normal and tetrad is tetrahedral type. 4. the tapetum tissue as 1-2 layer of glandular tapetum, the cell of which frequently become 2-multinucleate, with occasional nuclear fusion. 5. After dyad stage, male sterile flower did not couse abnormal hypertropy of tapertum tissue. 6. As the abnormal degeneration of tapetum tissue may not supply the nutrition to microspores, microspores of male sterile flower did not develop to fertile pollen but developed to sterile pollen.
金濟桓 全北大學校 1983 論文集 Vol.25 No.-
오미자育種의 基礎硏究로서 오미자의 雄性配偶體形成에 關한 發生學的 調査 結果를 要約하면 다음과 같다. 1. 꽃은 不完全花로서 單性花이다. 2. 花被는 離辯花冠과 離片??으로 되어 있다. 3. 葯은 4胞葯이며, 葯壁은 表皮, 內被, 中層, 그리고 絨 組織으로 되어 있다. 4. 小胞子細胞의 減數分裂은 正常이고, 4分子는 同時型이다. 5. 絨 組織은 不規則한 1∼2層의 glandular tape-tum이고, 2∼3核을 가지며, 때로는 核融合이 일어난다. 6. 雄性不稔花는 2分子基 以後 絨 組織의 肥大가 急激히 일어난다. 7. 雄性不稔花의 小胞子는 絨 組織의 異常肥大로서 正常花粉으로 發達하지 못하고 無能花粉으로 된다. As a basic reserch in Schizandra chinensis Baillon breeding, embryological investigation of male gametophyte formation was carried out on S. chinensis. The following are some of the major findings of the research: 1. The flower is incomplete and is monosexual flower. 2. The perienth is composed of the polypetalous and polysepalous. 3. The anter is tetraporangiate ; the anther wall is made of epidermis, endothecium, middle layer and tapetum tissue. 4. Meiosis of microspore mother cell is normal and tetrad is tetrahedral type. 5. The tapetum is 1∼2 layers of glandular tapetum, the cells of which frequently become 2-multinucleate, with occasional nuclear fusions. 6. In male-sterile flower the tapetum hypertropy proceeds noticeably from dyad stage of micro-spore mother cell. 7. Tapetum tissue develops such hypertrophy that microspore of the male sterile flower could not grow up fertile pollen and it becomes sterile pollen.