질소 수준에 따른 벼 품종의 등숙기간별 항산화활성 변화

채제천,이동진,전대경,류수노 한국작물학회 2001 한국작물학회 학술발표대회 논문집 Vol.2001 No.2

수도 절간의 유관속 및 통기공과 이삭 특성과의 관계

蔡濟天,金鳳九,李東珍 韓國作物學會 1984 Korean journal of crop science Vol.29 No.4

우리나라 수도 품종들의 절간 유관속수 및 통기강수를 절위별로 알아보고 이들과 이삭형질과의 상관관계를 구해 본 결과 다음과 같은 결과를 얻었다. 1. 우리나라 수도 품종들의 절위별 총 유관속수는 상위제 1절간에서 약 23개∼47개로서 품종간에 현저한 차이가 있었다. 그러나 제 2절간 이하에서는 유신품종을 제외하고 품종들간에 큰 차이없이 51개∼59개의 범 위이었다. 2. 통기강은 상위제 1, 2절간에서는 전혀 발생이 없었고 제 5절간에서는 모든 품종이 양호하게 발달하여 21∼31개가 발생하였으며 품종간에 뚜린한 차이를 나타내는 절위는 제 4절간이었다. 3. 절간의 유관속수, 굵기 및 수장, 1,2차지경수, 영화수간에는 매우 밀접한 정의 유의상관이 인정되었다. The experiment was carried out in order to investigate the development of vascular bundles and air spaces of rice internode, and its relationships to the panicle characteristics of rice varieties. The results obtained were as follows; The number of total vascular bundles in upper 1st internode was significantly different among varieties, but there was no remarkable differences among varieties and nodal positions below the 2nd internode. In the 5th internode 21-31 air spaces according to varieties was developed, however, no air space was found in upper 1st and 2nd internodes at maturing stage. Significant varietal difference of air space was observed in upper 4th internode. The number of vascular bundles, internodal thickness were positively correlated with panicle length, the number of rachis branches, and the spikelets in rice varieties.

간척지 재배 벼 품종의 수량과 품질과의 관계

채제천,정명식,전대경,손용만 韓國作物學會 2002 Korean journal of crop science Vol.47 No.3

간척지 논에서 고품질 쌀 생산을 위한 기초 자료를 얻고자 2001년 농업기반공사 김포간척지에서 9개 벼 품종의 수량과 단백질 함량 및 식미치의 관계를 검토한 결과는 다음과 같다. 1. 쌀 수량은 식미계에 의한 식미치와 고도로 유의한 부상관(r=-0.49** )을 나타내었다. 수량이 낮은 수라벼의 식미치가 가장 높았고 수량이 높은 대안벼와 진품벼는 식미치가 가장 낮았다. 2. 간척지 재배 백미의 단백질 함량은 모든 품종이 7.5% 이상으로 상당히 높은 편이었는데 이는 시비와 관개용수에서 많은 질소질비료가 공급된 결과로 보여졌다. 3. 김포간척지에 적합한 벼 품종은 수량성 면에서는 대안벼, 진품벼, 신동진벼이나 품질을 고려한다면 단백질 함량이 낮고 식미치가 높은 광안벼, 수라벼, 남평벼가 적합하다고 사료되었다. Relationship between yield and palatability value measured by vice taster among 9 rice varieties was investigated to obtain basic information for production of rice with high quality in reclaimed paddy field. The rice yield showed a highly negative correlation with palatability value of milled rice (r=-0.49** ). The varieties of high palatability value tend to show low yield. The protein content of milled rice grown in reclaimed paddy field was higher than 7.5% mainly due to heavy fertilization of nitrogen and irrigation of eutrophicated water, The rice varieties such as Daeanbyeo, Jinpumbyeo and Sindongjinbyeo were recommendable only for higher yield, but in view of rice quality, Kwanganbyeo, Surabyeo and Nampyoengbyeo were more recommendable because of their lower protein content and higher palatability value.e.

맥주맥에 있어서 직두형 및 수두형 Isogenic line의 시비량 및 재식밀도에 대한 반응

曺章煥,李殷燮,蔡濟天 韓國作物學會 1986 한국작물학회지 Vol.31 No.3

1972년 맥주맥 기신 2조 001 Deba abed를 교배하여 Hetero 반복자식법에 의하여 1982년에 만들어진 수두형 및 직두형 동질유전자계통(Isogenic lines)을 이용하여 시비량 3수준(표준비, 질소 30% 증비, 질소 60% 증비), 재식밀도 3수준 (60 18cm, 40 18cm, 20 5cm)으로 처리하고 시비량재식밀도에 따른 수두형 및 직두형계통의 생육, 수량 및 품질차이를 구명하기 위하여 1984년 10월부터 1985년 10월까지 천안에 위치한 단국대학교 농과대학 실험포장에서 시험한 결과는 아래와 같다. 1. 수두형 동질유전자계통은 직두형 동질유전자계통보다 수장과 수축절간장이 길고 입착각도가 크며 1수립수는 계통간에 차이가 없었다. 재식밀도에 따라서 변화가 인정되지 않는 특성은 출수기와 수장이며 재식밀도에 따라 변화되는 유의 2. 수형유전자의 작용을 받지 않은 형질은 출수기, 간장, m2 당 수수, 1수립수, 수량, 가변성질소등으로 수형동질유전자계통간에 유의성이 없었고 수형유전자의 작용을 강하게 받는 형질은 주로 품질에 관련되는 형질로서 수장, 천립중, 정립률, 원맥 및 맥아조단백질함량, 맥아수량률, 맥아전질소, 콜박지수, 효소력 등으로 유의성이 있었다. 3. 수두형과 직두형 동질유전자계통이 시비량 차이에 의하여 영향을 받지 않은 형질은 출수기, 간장, 수장, 1수립수, 천립중 등이며 영향을 많이 받는 형질은 m2 당수수, 수량, 정립률, 원맥 및 맥아조단백질함량, 맥아수량률, Extract 수량률, 맥아전질소, 가용성질소, 콜박지수, 효소력 등이다. 4. 수두형과 직두형 동질유전자계통이 재식밀도에 의하여 영향을 받지 않은 형질은 출수기, 수장이며 영향을 받는 형질은 간장, m2 당수수, 1수립수, 천립중, 1 중, 수량, 정립률과 품질관련 형질들이었다. 5. 시비량에 있어서 12-12-9 kg 구가 맥주맥의 품질이 가장 좋으며 수양은 15-12-9kg 가 많았고 재식밀도에 있어서 관행재배보다 협신파재배나 세조파재배를 할수록 다시 말하면 균등배치양식을 할수록 수량이 많아지고 품질이 양호하였다. 6. 수두형이 직두형 동질유전자계통보다 품질관련형질면에서 유리하므로 양질맥주맥 품종육성에 있어서 선발지표로 할 수 있으며 수두형은 직두형보다 간이 연약하여 도복이 우려되므로 선발시 항상 유의해야 한다. Taiwan land race, Taichung 2 rowed barley #1 was crossed with England cultivar, Deba abed in 1972, and two isogenic lines-lax and compact heads-were made in 1982. So as to three fertilizer and three seeding density levels were treated at Dan-Kook Agricultural College farm located in Cheonan in 1984-1985. Lax head type had longer spike length and rachis than compact type. The traits uninfluenced by different head types were heading time, number of grains per spike, yield and soluble nitrogen content. However, the traits related to malting quality such as 1,000 grain weight, assortment ratio, protein content of grain and malt, malt extract, malt total nitrogen content, Kolbach index and diastatic power were significantly affected by head types. The number of spikes per m2, yield, assortment ratio, crude protein content of grain and malt yield ratio, extract yield ratio, malt total nitrogen, souble nitrogen content, Kolbach index and diastatic power were affected by fertilizer and seeding density levels in both isogenic lines. The malting quality was best at 12-12-9 kg/l0a fertilizer level and the yield was greatest at 15-12-9 kg/l0a level. Narrow-spaced or drilling seeding had greater yield and better malting quality than conventional row seeding. The plant with lax head type had some advantages in malting quality, suggesting that this trait would be considered as an selection criterion fer good malting quality lines.

벼 수확시기가 미질에 미치는 영향

채제천,김정석,김성곤 한국작물학회 1991 한국작물학회 학술발표대회 논문집 Vol.1991 No.-

한국 대두 품종의 뿌리특성 연구

채제천,이은섭,Je-Cheon Chae,Eun-Sup Lee 한국작물학회 1988 Korean journal of crop science Vol.33 No.4

우리나라 대두 품종의 지하부 특성을 구명하여 수량성을 이해하고 품종육성과 재배법 개선을 위한 기초자료를 얻고자 장려품종, 도입품종 및 재내종 각 10품종씩 합계 30품종을 공시하여 포장 및 pot 실험을 수행하였다. 4엽기, 개화시기, 협비대기에 지상부와 지하부 특성을 조사하고 종실중과의 관계를 검토한 결과는 다음과 같다. 1. 포장재배조건에서 장려품종군, 도입품종군 및 재래종군간의 지상부 특성은 4엽기까지는 차이가 없었고 개화시기에는 경장만이 차이가 있었으나 협비대기에는 경자, 경태, 주경절수, 분지수, 협수 및 종실중이 유의한 차이를 나타냈다. 2. 포장재배조건에서 장려품종군, 도입품종군 및 재래품종군간의 지하부 특성은 4엽기에는 태근수, 개화시기에는 1차근각, 근절단강도, 협비대기에는 태근직경 및 근중이 유의한 차이를 나타냈다. 3. 지상부 및 지하부의 특성들과 종실중과의 상관은 품종군에 따라 크게 달랐으며 지하부보다는 지상부 특성이 종실중과 높은 정의 상관을 보였다. 4. 장려품종군은 지상, 지하부의 어느 형태적 특성도 종실중과 상관이 없었으며 따라서 생리기능이 중요할 것으로 생각되었다. 5. 도입품종군에서는 생육 전기간의 엽면적이 종실중과 상관이 높았고 4엽기의 경장과 건물중 및 근강도가 수량과 유의한 정상관을 나타냈다. 6. 재래종군은 생육 전기간중 엽면적과 건물중이 종실중과 상관이 높았고 개화기 이전의 절수, 협비대기의 경태, 태근수 등이 높은 정상관을 보였다. 7. 우리나라 장려품종은 협비대기에 평균 1차근수 25.6개, 태근수 14개, 근각 64$^{\circ}$, 수평근장 9.8 cm, 근절단강도 10.5 kg 및 T/R율 11.9이었다. Root is supposed to be important role in growth and yield formation of soybeans and also there is expected to exist varietal differences between soybean root morphology and system. 30 soybean varieties including 10 Korean recommended, 10 Introduced and 10 Korean native varieties were grown at field and pot under standard culture condition. Top and root characteristics were investigated at V4, R1 and R5 stage and T/R relations, correlations with yield were calculated. Top characteristics showed significant difference between 3 variety groups of Korean recommended, Introduced and Korean native variety. Stem length at R1 stage and stem length, stem diameter, number of nodes, number of branches, number of pods and grain yield at R5 stage were significantly different top characteristics. Root characteristics showed significant difference between 3 variety groups were number of thick primary root at V4 stage, primary root angle and root cutting strength at R1 stage, thick root diameter and root dry weight at R5 stage. The correlations between top and root characteristics and soybean yield was greatly different by soybean variety groups, and the top characteristics was more highly correlated then root characteristics. All the top and root characteristics of Korean recommended variety showed no correlations with yield. However, leaf area, stem length, top dry weight in Introduced variety and leaf area, top dry weight, number of nodes, number of thick primary root in Korean native variety were highly correlated with soybean yield.

播種期, 育苗日數 및 播種量 差異가 水稻의 苗素質, 出葉 및 收量性에 미치는 影響 : (第2報) 出葉 및 收量性에 對하여 (Ⅱ) On the Leaf Appearance Cycle, Yield and its Components

蔡濟天,李殷雄 서울대학교 1975 서울대학교 論文集 Vol.25 No.-

This experiment was conducted to contribute the establishment of safe maximum yield technique of rice by studying the characters of recently released variety “Tongil”compared with current leading variety “Jinheung”in accordance with different seeding date (Apr. 13-Early, Apr. 27-Ordinary, May 11-Late), nursery period (28, 42, 56, 70 days in each seeding date), and seedling density (0.3, 0.6, 0.9ℓ per 3.3㎡ in each nursery period) in 1972. The results obtained in this study are summarized as follows. 1. The total leaves on main stem were almost same in spite of different seeding date, nursery period and transplanting date except extreamly late seeding and late transplanting. The variety Tongil always had emerged about 2 leaves more than the variety Jinheung. 2. The turning period of leaf appearance cycle showed a tendency to be influenced only by external environment, because it showed changes only by transplanting date though seeding date, nursery period, seedling density as well as characters of seedlings were different. 3. The mean leaf appearance interval on main stem was shortened according to delayed seeding while it was lengthened by extending nursery period. And the difference of leaf appearance cycle were determined by the differences of the interval of earlier period of leaf appearance cycle. The shortest leaf appearance interval was seen when transplanted at from May 25 to June 8. 4. The degree of delaying heading by extending nursery period n the variety Tongil was smaller than in the variety Jinheung within the same seeding date, but the degree of accelerating heading in the variety Tongil was larger than in Jinheung in the case of the same transplanting date. The critical heading date ensure a stable yield in the variety Tongil was considered August 15. 5. The number of panicles per hill increased according to early seeding in the variety Jinheung while it was the greatest when seeded ordinary in the variety Tongil, and also it was increased strikingly as young seedlings were transplanted in both varieties. 6. The number of spikelets per panicle of both varieties was increased straightly by extending nursery period, and the relationship between the number of spikelets per panicle and the number of panicles per hill showed negative corelation remarkably. 7. The maturing ratio and 10000 grains weight were decreased markedly in accordance with not only delaying seeding but also delaying transplanting and this tendency was conspicuous in the variety Tongil. 8. Consequently, the grain yield was influenced greatly by the number of spikelets per hill, heading date and maturing ratio in this study. So the maximum yield was obtained when transplanted earlier, that is, transplanted with 42 days seedling at May 25. 9. It was concluded that the variety Tongil had a good plant type, because it had more leaves, and the leaf appearance interval was shorter and the number of leaves on main stem at turning period of leaf appearance cycle were larger than the variety Jinheung.

農學의 變化趨勢와 이에 對應한 農科大學의 發展方案

蔡濟天 단국대학교 1994 論文集 Vol.28 No.-

The future agriculture is expected to emphasize the importance of high quality and high-technology, safety of agricultural products than yield quantity and land culture technology. And also the role of agriculture is expected to emphasize the importance of conservation function of environments including air, water and soils. The severe competition between food-producing areas is expected to occur, so the characterization of agriculture is important to secure international and inter-regional competition ability. Therefore, our agricultural college have to implicates these current of the times of agricultural sciences. It is necessary to renew the aim of agricultural education, improve the curriculum including introduction of applied bio-production concept, develope the bio- and natural-resources, introduce the low input sustainable agriculture and preservation of environments. It is desirable to introduce unified lecture, interdisciplinary research contribution to regional society. It is desirable too to change the name of agricultural college and departments for promotion of future development.

液體窒素肥料 施用法 開發硏究 : Ⅳ. 水稻本畓의 追肥(分蘗肥 및 穗肥) 效果 試驗 Ⅳ. Effects of Liquid Ammonia as a Top-Dressing Fertilizer (at Tillering and Jointing Stages) in Paddy Field.

李殷雄,具滋玉,蔡濟天 서울大學校 農科大學 1976 서울대농학연구지 Vol.1 No.2

The experiments has been conducted in the college crop farm, Suweon at 1976, to improve of fertilizer use of liquid ammonia as a top-dressing (tillering stage and jointing stage) fertilizer in paddy field. At the trials, three rice cultivars - Milyang 15, Yushin, and Chosaeng Tongil - were investigated, and the liquid ammonia (Industrial solution of 16 Normal NH₄-N contents) was applicated in levels of 1.5kg, 3.0kg, 4.5kg in active ingredients per 10a with the control plot of urea 3.0kg a.i./10a for the tillering stage trial, and, for the jointing stage trial, 1kg, 2kg, 3kg a.i./10a with the control plot of urea 2.0kg a.i./10a. The results of those trials are summarized as follows. (Refer to Table 1.) 1) Tillering Stage Application The unhulled grain yields showed highly significant increments according to the increase of application dosages of liquid ammonia comparing with the urea treatment, and also the statistical high significance of yields were detected among cultivars. The significant increase in yields were mostly constituted through the panicle number per hill, spikelet number per panicle, and weight of 1,000 ripened kernels among other yield components, and a better effects of liquid ammonia than urea through the spikelet number per panicle, ripened grain ratio and 1,000 ripened kernels weight including panicle length among others. 2) Jointing Stage Application Only the increasing tendency of yield was detected without any statistic significances. Also no better effects of ammonia water applications than urea were recognized through the yielding analysis. However, a significance in 5% level of spikelet number per panicle and its more improved effects of liquid ammonia (NH₄-N) application than urea was showed at the trial. 3) Conclusion For the japonica type and Tongil type rice cultivars (Jinheung, Milyang 15, Chosaeng Tongil, and Yushin for instances in Korea) as a top-dressing (at both of tillering or jointing stages) nitrogen fertilizer, the very liquid ammonia could be possibly applicated (especially by method of dropping system within irrigation water) taking significant improvement of rice yield and its yield components. The fertilizer effects of liquid ammonia were readily recognized as a better or similar at least to urea.

몽골의 농업(農業)및 사회 현황과 협력전망

채제천 한국국제농업개발학회 1991 韓國國際農業開發學會誌 Vol.3 No.1

The brief informations on Mongolian social, economical as well as agricultural situations are reviewed for establishment of cooperation between two countries. The Mongolian People's Republic has huge land area of 1,566,000 km², population of about 2 billion and its density of 1.3 persons per km². 90% of land area is natural grassland and about 24,000,000 heads of livestocks are grazed inextensibly. Probably the most cheap and clean agricultural products including livestock products are considered to produced in the world. The potentiality of development and prosperity of Mongolia near in future seems to be very high in viewpoint of excellent underground and tourist resources. The Mongolians want to culture varieties of vegetables and increase its production for their people's health and increasing demand of foreign tourists. They have, however, no proper agricultural techniques and materials as well as experiences. In final the technical transfer and/or aid to Mongolia promotes close relationships between two countries.