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.

우리나라 쌀의 품질과 기능성 실태, 연구현황 및 발전방향

채제천(Je-Cheon Chae) 한국식품과학회 2004 식품과학과 산업 Vol.37 No.2

식량 안정생산기술의 전망

채제천(Chae Je Cheon),강양순(Gang Yang Sun),이영호(Lee Yeong Ho),남중현(Nam Jung Hyeon) 한국작물학회 1999 한국작물학회 학술발표대회 논문집 Vol.1999 No.-

The major problems of food crop cultivation in Korea are low yield of most crops except rice. inefficient cultivation techniques for aged farmers. and low international competibility. Therefore, development of cultivation techniques of food crops should aim the yield. quality improvement, labor reduction and production cost. The primary issue for increasing the yield of soybean, barely and wheat is to reduce the yield gap between the farmer s yield and recommended ones of experiment station. More advanced cultivation techniques needs to be developed. and/or the conventional breeding methods to be reconsidered. The newly developed labor-saving mechanized technique needs to reduce labor hours , and the cost of agricultural implements and machineries. In other words the labor-saving mechanized technique should be developed based on the improvement of total farming system as well as systemic fundamental innovation of cultural methods. The efficiency of solar energy use in food production of Korea in 1997 is as low as 0.52% so there is much room to increase yield. It is recommendable that the concept of food Production should be changed to energy Producing efficiency Per unit area basis from volume and weight of food materials. Moreover, introduction of resonable cropping system is needed to increase yield of main crops, farmer s income, solar energy use efficiency, and decrease of land service expenditure. Current cropping system emphasized on economic crops. especially in vegetables , is not desirable for resonable use of arable land. stability of agricultural management and staple food crop self-sufficiency ratio. It is desirable to increase food crops . that are energy of carbohydrate and protein rich and land dependent crops. in cropping system. And the agronomist should develop the cultural methods to replace food crops for food self-sufficiency and stable farming management instead of economic crops in current cropping system. Low-input and environmentally-sound crop cultivation techniques, especially nitrogen-reducing culture technique which is directly related to food crop quality, also needs to be developed urgently. The extended cultivation of corn in upland and barely and wheat in lowland as a feed stuffs is recommended to prevent further decrease of food self-sufficiency ratio, which is mainly caused by the high reliance on imported feed grain. It is also considered that the calculation and presentation methods of standard agricultural income needs to be improved. The current calculation method uses unit land area of 10a regardless of crop kinds , characteristics of agricultural management and cultivation scale. So, it is apt to lead misunderstanding of farm income value. Therefore. it should show an income of average farmers for certain number of years. Research and developing system for food producing is not desirable because they are conducted currently individual crop and mono-culture basis. But actual agricultural income is usually earned by cropping system including upland and lowland. For example. the barley and wheat is usually cultivated in double cropping system. The cooperation among research institutes such as university agribusiness. government and farmers is indispensible. The public information and education on importance and consumption habit of food crops is necessary in Korean society to increase food self-sufficiency through nationwide cooperation.

Effect of Geothermal Water on Germination, Seedling Growth and Development of Vascular Bundle in Rice

이동진,채제천,Lee, Dong-Jin,Zamora, Oscar B.,Chae, Je-Cheon The Korean Society of Crop Science 1996 Korean journal of crop science Vol.41 No.1

필리핀은 화산지대에 위치해 있으며 44개 화산중 13개가 활화산으로 되어있는 상태이다. 전기발전을 위해 지하에 있는 고온의 온천수를 이용하고 있으며 그 후 시냇가에 방류한다. 이 온천수에는 독성이 강한 물질들이 많이 함유되어 있어 관개수로 이용하였을 경우 농작물에 지대한 악영향을 주고 있는 실정이다. 본 실험에서는 온천수를 이용하여 벼품종의 발아, 유묘생장유관속발달에 미치는 영향을 구명하여 작물 재배관리를 위한 기초자료를 얻고자 수해하였던 바 그 결과를 요약하면 다음과 같다. 1. 온천수내에는 황, 칼리, 나트륨, 및 붕소 함량이 관개수에 비해 현저하게 높았다. 2. 최종발아율, 발아소요일수 및 발아속도는 온천수의 처리에 의해 크게 감소하였으며, 필리핀재래종인 Binato품종은 IR58 및 운봉7호보다 높은 발아율을 보였다. 3. 초장, 근장, 엽수 및 총건물중은 온천수의 농도가 증가될수록 뚜렷하게 감소하였다. Binato와 IR58품종은 처리 후 15일, 25% 온천수 농도에서 운봉 7호보다 건물중이 다소 높았다. 4. 유묘기 엽신의 유관속발달은 무처리에 비하여 온천수는 50%까지 농도를 높일수록 유관속수 및 크기 등 발달을 저하시켰다. 5. 온천수 처리에 따른 엽의 손상도는 농도가 높아질수수록 크게 나타났으며, Bitano와 IR58호는 운봉 7호보다 온천수에 대한 손상도가 작아서 다소 강한 것으로 판단되었다. Geothermal water contains toxic quantities of sulfur, potassium, sodium, boron, and other toxic elements. These toxic elements can substantially restrict germination and seedling growth in rice plant. Germination percentage, average days required for germination and germination velocity were drastically affected by geothermal water. Binato cultivar has higher germination rate compared to IR58 and Unbong 7. Plant height, root length, leaf number and total dry weight decreased with increased geothermal water concentration. Binato and IR58 showed higher total dry weight than Unbong 7 at 25 percent geothermal water at 15 days after treatment (DAT). Binato and IR58 were relatively more tolerant than Unbong 7 in terms of percentage of leaf damage at 25, 50 and 75% concentration of geothermal water at 10 DAT. The development of large and small vascular bundles decreased with increasing concentration of geothermal water from control to 50% in three rice cultivars.

국제유기농업 기본규약상의 잡초방제 규정

손상목 ( Sohn Sang-mok ),채제천 ( Ll Chae Je-cheon ),김영호 ( Kime Yong-ho ) 한국유기농업학회 1998 韓國有機農業學會誌 Vol.6 No.2

This study aims to point out what is the basic idea and principle of weed control in organic farming. The korean organic agriculture gets a point in dispute on weed control, be'cause 1) they do not practice the Basic Standard of IFOAM and FAO!WHO Codex Guidelines{draft), and 2) Korean organic farming is defined quite differently from internationally recognized core aspects for organic agriculture. Organic farming, in Korea, is taken to mean just the replacement of chemical fertilizer by organic manure and avoidance of agricultural chemicals without practicing on rotation, cropping system and so on. As a consequence. organic farmers in Korea are suffering from hard labor to control the weed. In the paper it is discussed on organical weed control method which are required in the Basic Standard of IFOAM and guidelined in the Organic Production Principles of F AO/WHO Codex draft. and furthermore the single or combination effect of those method are also discussed. In conclusion it is suggested the necessity. purpose. and effect of the introduction of the basic standard ta korean organic agriculture including organical weed control.

보리廣護穎의 遺傳과 多面發現效果 Ⅰ. 보리 廣護穎의 遺傳 및 栽培形質과의 關係

Chang Hwan Cho(曺章煥),Je Cheon Chae(蔡濟天),Ouk Kyu Han(韓玉圭) 한국육종학회 1992 한국육종학회지 Vol.24 No.1

This experiment was carried out to determine the inheritance of wide outer glume, to investigate the associated agronomic characters with wide outer glume and to examine variations of chemical feed composition in barley. This study was conducted to obtain basic genetic informations which could be used for breeding better quality and yielding whole crop silage barley. The parents, F₁ and F₂’s of cross line between wide outer glume variety Triple beared club mariout(C. I. 2523) and 4 narrow outer glume varieties were studies in field at experiment farm, Dankook univ., Cheonan city, during 1990~1991 crop season. The results are summarized as follows : The wide outer glume of barley was a simple recessive and controlled by one set of allele. Broad sense heritabilities of wide outer glume were high and it was expected to high efficiency of selection for wide outer glume in the early segregating population. The gene of wide outer glume of barley showed pleiotropic effects including late heading, shorteninng of culm length, upper internodes, spike and awn length. Especially, it made 1s internode short. There was no significant correlations between wide outer glume and yield of barley, though the gene of wide outer glume decrease number of spike per plant and number of grains per spike. The gene of wide outer glume of barley could be used as marker gene for breeding agromic characters and a high yielding whole crop silage barley and it should also be considered in selection procedure for improving agronomic characters and a high yielding line.

보리 廣護穎의 遺傳과 多面發現效果 Ⅱ. 보리 營養成分의 變異와 廣護穎과 營養成分間의 相關

Chang Hwan Cho(曺章煥),Je Cheon Chae(蔡濟天),Ouk Kyu Han(韓玉圭) 한국육종학회 1992 한국육종학회지 Vol.24 No.3

This experiment was carried out to determine the inheritance of wide outer glume, to investigate the associated agronomic characters with wide outer glume and to examine variations of chemical feed composition in barley. This study was conducted to obtain basic genetic informations necessary which could be used for breeding better quality and high yielding whole crop silage barley. The parents, F₁ and F₂’s of cross line between wide outer glume variety Triple bearded dumb mariout(C.I. 2523) and 4 narrow outer glume varieties were studies in field experiment at experiment farm, Dankook univ., Cheonan city, during 1990~1991 crop season. The results are summarized as follows: Broad sense heritabilities of crude protein, crude oil, crude fiber and ash content were high and its were expected to high efficiency of selection for feed compositions in the early segregating population. The nutrient compositions such as crude protein, crude fat, fiber, ash and soon showed normal distribution as well as transgressive segregation among F₂ population, so could select a high nutrient plant. The gene of wide outer glume of barley showed pleiotropic effects that its made crude protein, crude oil and ash content increase. The gene of wide outer glume of barley could be used as marker gene for breeding better quality, a high yielding whole crop silage barley.

非破壞 連續 生體重 測定裝置의 開發 및 이에 의한 상추의 生長反應 分析

南潤一(Nam Yooun Il),蔡濟天(Chae Je Cheon) (사)한국생물환경조절학회 1995 생물환경조절학회지 Vol.4 No.1

질소시용이 수도품종의 절간조직구조에 미치는 영향 및 조직구조와 수상특성과의 관계

이동진,김기준,이종훈,김봉구,채제천,Lee, Dong-Jin,Kim, Ki-Joon,Lee, Jong-Hoon,Kim, Bong-Ku,Chae, Je-Cheon 한국작물학회 1985 한국작물학회지 Vol.30 No.1

본 실험은 질소시용수준에 따른 수도절간의 조직구조에 미치는 영향과 품종간차이 및 조계구조와 수상특성과의 관련성을 구명코자 실시하였는바 다음과 같은 결과를 얻었다. 1. 각 절간의 대유관속수 및 크기는 질소무비구에 비하여 질소증시구에서 증가하였고, 특히 그 수는상위제 1절간에서, 크기는 상위제3·4·5절간에서 뚜렷한 차이를 나타냈다. 통일계품종은 일반계품종보다 대유관속수가 많았고. 크기가 컸다. 2. 통기강수는 질소를 증시함에 따라 질소무비구에 비하여 많았다. 상위제3·4절간에서 통기강수 및 크기의 품종간차이를 보였고, 특히 상위제 3절간에서 풍산벼와 추청벼는 통기공이 발달되었으나 유신과 진흥은 발달되지 않았다. 3. 대유관속수와 크기 및 절간굵기와 수상특성(수장, 1·2차지경 및 영화수)과는 밀접한 정의 상관을 나타냈다

대규모 유리온실 재배에서 토마토의 생육 및 수량성 검정

손용만(Sohn Yong-Man),채제천(Chae Je-Cheon),노건길(Ro Kun-Kil) 한국원예학회 1999 원예과학기술지 Vol.17 No.5