산약의 기내증식에 (器內增殖) 미치는 배지와 생장조정제의 영향

이효승(Hyo Sung Lee),유수노(Su Nho Ryu),이정일(Jung Il Lee),조재연(Chae Yun Cho) 한국약용작물학회 1993 한국약용작물학회지 Vol.1 No.1

The low seed propagation is one of the problem needed a lot of seed tuber for the propagation in yam. Therefore this experiment was carried out to understand the possiblility of seed tuber propagation by tissue culture of yam. In-vitro stem node of yam was cultured by concentration treatments of 1/2, 1/4 and 1/8 with MS medium additted with each concentration levels of IAA, NAA, IBA, kinetin and BA. Acorrding to the Iower concentration than MS medium, length of shoots was promoted, leaf emergence shoots and rooting shoots were increased at 1/8 MS medium during the culturing period of stem node in yam. Fixed IBA and kinetin under the concentration of MS mdeium was inhibited severely by the heigh concentration additted with IAA 1㎎/ℓ and NAA 4㎎/ℓ. But fixed IBA 5㎎/ℓ and kinetin 2㎎/ℓ with concentration of 1/8MS medium was remarkably promoted leaf emergence shoots and rooting shoots by 1㎎/ℓ of additted IAA and NAA. Percentage of induced shoots was increased by combination treatments of IAA. 1.5㎎/ℓ and kinetin 2㎎/ℓ, also leaf emergence shoots and rooting shoots were promoted by combination treatments of IAA 1.5㎎/ℓ and kinetin 2㎎/ℓ.

사막을 비옥한 농경지로 바꾸는 이스라엘의 농업기술에 관한 조사 연구

조재연,박종선,곽태순 한국국제농업개발학회 2000 韓國國際農業開發學會誌 Vol.12 No.3

이스라엘은 국토규모나 인구의 크기로 보면 조그마한 나라이지만, 농산업분야에서는 세계 최고의 선진국중의 하나임을 알 수 있다. 기후, 토양 및 수자원 등 농업여건이 불리하지만 이러한 악조건을 오히려 역이용하여 가장 경제적이며 효율적인 농업생산성을 증대시키고 있는데 이를 요약하면 다음과 같다. 1. 유대민족을 팔레스타인으로 복귀시키려는 강렬한 Zionism에 뿌리를 둔 Kibbutz와 Moshav등 민족적 의지와 이념이 결집된 집단영농단체의 육성은 온갖 불리한 환경여건을 극복하고 성공으로 이끈 원동력이 되었다. 2. 1960년대에 이미 수자원을 전국적으로 연결하는 National Water Carrier System을 주축으로 물을 합리적으로 절약하면서 생산성을 극대화시키는 점적관수(Drip irrigation), 관비방법(Fertigation)등을 개발하여 실용화시키므로써, 메마른 사막을 옥토로 탈바꿈시키고 있다. 3. 농작물 재배와 가축사양과정 등 모든 영농작업을 전산화시켜 생산비를 절감함은 물론, 최적의 환경조건을 조성하므로써 단위면적당, 단위시간당, 단위투입량당 생산성을 획기적으로 증대시키고 있다. 4. 부가가치가 높은 꽃, 과일, 채소, 낙농 등에 중점을 두는 한편, 식량자급도를 95% 이상 확보하려는 영농단체들의 농업발전을 위한 일관된 집념을 높게 평가한다. 5. 미국과 유럽 등 국제시장의 취향에 맞는 고품질의 농산물 생산을 위한 새로운 품종, 재배 및 사양기술의 개발보급에 적극적이다. 예를들면, 과육이 붉은 색을 띠는 그레이프후르츠 품종(Sunrise)의 육성과 세계 최고의 산유능력을 가지는 젖소품종의 육성을 꼽을 수 있다. 6. 결론적으로 보면 농업관련기관, 단체, 농민 그리고 산업체의 긴밀하고도 효과적인 협동체를 유지하므로써 이스라엘 농업은 지속적인 발전을 기하고 있다. Although Israel is a relatively small nation in terms of land area and population, it stands at the forefront of agricultural technology, its people turned passionately toward the future. This study was aimed at finding out the major facts which made it possible to increase markedly agricultural productivity per unit of land in Israel. Those facts could be very useful for improvement of the agricultural industry in Korea. The cooperative farming led by the Kibbutz, Moshav, and Moshava has greatly contributed to the improvement of agricultural industry. Especially, the Kibbutz movement in which only three percent of the total population is participating, accounts for more than ten percent of the Israeli Gross National Product. The strong will and devotion of the members of Kibbutzim have been vital energies in increasing agricultural productivity in this country. All water resources have been fully utilized through the National Water Carrier System. The pressure irrigation such as drip irrigation, sprinkler irrigation, spray irrigation, and fertigation not only reduced water consumption per unit of land by 50∼70 percent but also increased productivities of crops. These water-saving irrigation methods are unique Israeli techniques suitable for desert farming all over the world. Every farming operation has been completely computerized and perfectly controlled to provide the best conditions for crops and animals. Along with the strong agricultural policy for self-sufficiency of staple food crops, consistent policy to improve farming technology for citrus, tomatoes, water melon, rose, carnation, and dairy farming, have been successfully implemented. The average annual milk production per milking cow is the highest in the world. On the other hand, closer cooperation among the policy makers, research and development agencies, cooperative farmers, and agribusiness sectors, have been effectively practiced.

國際農業技術協力事業의 方向과 推進現況 : 熱帶農業硏究 中心으로

趙在衍 濟州大學校 亞熱帶農業硏究所 1984 亞熱帶農業硏究 Vol.1 No.-

한국의 농재지도사업을 위한 농업기술정보체계화에 대하여

조재연 한국국제농업개발학회 1990 韓國國際農業開發學會誌 Vol.2 No.1

우리의 農業, 農村과 農民은 國內外的으로 밀어닥치는 商業化, 國際化 그리고 開放化의 물결속에서 세찬 試鍊을 겪고 있다. 이러한 어려움을 克服하기 위해서는 增産爲主의 大量生産體制에서 하루 빨리 벗어나 消費者의 慾求를 充足시킬 수 있는 高度良質의 農産品을 效果的으로 生産함으로써 農業所得向上은 勿論 國際競爭力을 提高시켜야한다. 또한 開發된 作目과 技術은 遲滯없이 農家에 普及 活用되어 收支맞는 營農으로의 轉換이 時急하다. 今年度 農村振興施策目標는 풍요로운 福祉農村建設에 두고 이를 爲하여 主穀의 豊年農事達成, 農業所得源의 擴大開發普及, 尖端技術의 實用化促進, 農村環境과 農家生活 改善, 專門人力과 先導 農家育成을 重點的으로 推進하고 있다. 文化, 社會, 經濟, 科學分野에서의 刮目할 만한 發展과 더불어 弘報媒體 또한 하루가 다르게 變化發展되고 있으며 農民의 農業技術情報에 對한 需要도 보다 多樣해지고 專門化되는 傾向이다. 農業技術弘報는 새로운 農事技術普及 뿐만아니라 農畜産物의 流通과 生活까지를 連繫하여 體系的으로 推進하는데 最善의 努力을 傾往하고 있다. 아울러 農民으로 하여금 主要農政旅策을 올바르게 理解하여 自助的인 營農意慾을 갖도록 하여야 한다. 따라서 效果的인 大衆媒體를 立體的으로 活用하면서 보다 實際的인 視聽覺敎材의 꾸준한 開發로 農村指導事業의 成果를 極大化시켜야 할 것이다.

수도(水稻)1대잡종의 육성개발과 전망

조재연,김종호 한국국제농업개발학회 1990 韓國國際農業開發學會誌 Vol.2 No.2

水稻 1代雜種의 開發普及은 아직도 種子生産의 어려움으로 中國을 除外한 다른 米作國家에서는 實用的으로 農家에 普及되지 않고 있다. 그러나 最近 中國의 PGMS의 育成에 이어 日本의 TGMS의 開發은 種子生産體를 三系法에서 二系法으로 單純化하는데 큰 寄與를 했으며 中國, 日本 및 其他 外國에서 보다 單純한 Apomixis稻에 依한 種子生産硏究를 하고 있다. 水稻 1代雜種의 普及展望은 높은 雜種强勢를 갖는 品種의 育成과 種子生産의 單純化가 크게 影響할 것으로 보이며 食糧不足이 豫想되는 2,000年代를 對比하여 劃期的 多收性인 優秀한 水稻品種의 開發硏究로 末來의 食糧需要에 對處해야 할 것이다. Hybrid rice is under commercial cultivation in China but is not grown in most of rice growing countries due to the difficulties of seed production. Recently, China has developed photosensitive genic male sterile line. Meanwhile, thermosensitive genic male sterile line has been developed by Japanese scientists, and which appeared promising to breed rice hybrids and contributed greatly to the improvement of seed production system being used. Furthermore, it enabled us to adopt simpler seed production system than CMS. Intensive studies are being made apomixis of rice to explore one line method of seed production by the scientists in China, Japan and other countries. The extent of adoption of hybrid rice by the farmers would depend upon the extent of development of higher heterotic hybrids over inbreds and capability of seed production. It has been predicted that food shortage would be expected with population growth by 2000. Thus. rice production has to be intensified further to cope with increasing populations through the development of high-yielding cultivars like hybrids.

국제미작연구소의 연구활동과 성과

조재연,김종호 한국국제농업개발학회 1989 韓國國際農業開發學會誌 Vol.1 No.2

IRRI's research activities, achievements and research systems, and the impact of IRRI's rice improvement in Korea are partly reviewed. IRRI's efforts have been not only the improvement of rice production in the world's rice growing areas, but also contributed to the exchange of research information and technologies among the scientists. It also provides a mechanism to exchange the genetic materials and improved germplasm to the national scientists for their research programs and serves as a forum for dialogue among the scientists. IRRI trained many young scientists and provied them the opportunity to promote their research ability in rice. During the last three decades, IRRI obtained a wide range of experiences and valuable achievements through research inside and outside IRRI in cooperation with national rice research systems facing various problems, and which may lead IRRI to seek new solutions to continuing problems. Meanwhile, IRRI should emphasize more on the newly emerging problems and anticipatory research for the future through its new organization and greater concerted efforts to the changes of the global rice production. Korea's drasti yield increase has been made during the 1970's. This was a result of the availability of high-yielding germ plasm sources from IRRI.

야콘(Yacon : Polymnia sonchifolia)의 국내생육적응성 구명

김춘식,조재연,주영희,김유섭 한국국제농업개발학회 1994 韓國國際農業開發學會誌 Vol.6 No.2

야콘은 새로운 熱帶作物로 國內의 生育可能性을 究明하기 위하여 定植時期 및 施肥量試驗을 한 結果는 다음과 같다. 1. Yacon의 4처리 定植時期別 시험은 수원지방의 경우 定植時期는 4월 20일∼4월 30일이 적당하였으나, 定植時期가 다소 빠를 경우, 全體生育量과 收量이 많았다. 2. 定植時期가 수량에 미치는 要因은 地上部生體重이 增加할 수록 밀접한 相關關係 (r =0.87)가 있으며 草長 및 分枝數도 상관관계가 높았다. 3. 施肥水準別 試驗에서 10a당 堆肥 3,000㎏, 石灰 100㎏ 硼沙 1㎏을 공동으로 기비로 넣고 施肥水準은 N - P₂O_5 - K₂O = 12-14-38㎏/10a (2培區) 에서의 시험은 施肥水準이 높을수록 球根重이 많았으나 倒伏이 심하였다. 4. 栽培方法은 慣行區, 對照區가 그물栽培區 (1m 높이에서 網씌움), 摘心區 (1.5m 높이에서 적심)와 藥劑處理區(生長抑制劑인 액아단 0.5%처리)보다 훨씬 球根重과 全體生體重도 많았다. Adaption trials were conducted for tropial crop, YACON (Polymnia sonchifolia) to determine the optimum transplanting dates and fertilizer levels in Korean environment and the results are as follows. Greenhouse grown YACON was transplanted on April 20, April 30, May 10 and May 20 respectively and high yield was observed for April 30 transplanting plot. Positive correlation between transplanting date and upper part fresh weight (r = 0.87) was obtained. Higher correlation was also observed between plant height and number of tillers. Optimum distance for plant to plant was 70㎝ and row to row was 50㎝. For fertilizer level experiment, 3,000㎏/10a of compost, 100㎏/10a of lime and 1㎏/10a of boron were applied as basal fertilizer and four different fertilizer levels were tested. The optimum fertilizer level for high yield was found to he 12-14-38㎏/l0a for N-P₂O_5 - K₂O.

보겐빌리아(Bougainvillea spp .)의 삽목번식(揷木繁植)에 관한 연구

김천식,주문갑,조재연 한국국제농업개발학회 1991 韓國國際農業開發學會誌 Vol.3 No.1

바나나의 吸芽苗 크기가 生育과 收量에 미치는 影響을 究明하기 위하여 1985年 3月 부터 1986年 3月 까지 濟州大學校 亞熱帶農業硏究所에서 遂行된 吸芽苗 크기에 따른 生育 및 收量形質을 調査한 結果를 要約하면 다음과 같다. 1. 草長, 假莖長, 假莖直徑, 葉長, 葉幅은 吸芽가 커질수록 增加하였다. 2. 吸芽苗가 커질수록 出穗期와 成熟期는 빨라졌으며 成熟期間도 短縮되었다. 3. 果梗長, 果梗直徑, 果房梗長, 果房當 果指數, 果掌當 果指數, 果房當 果掌數, 果房重은 吸芽가 커질수록 增加되었으나 果指直徑, 果指重은 오히려 減少되었다. 4. 果房當 果指數와 果掌當 果指數는 假莖直徑, 葉長, 葉幅, 果梗長, 果梗直徑, 果房梗長과 正의 相關을 보였고 出穗日數와는 負의 相關을 보여 出穗가 늦어질수록 果房當 果指數와 果掌當 果指數는 減少되었다. 5. 果房重은 果房當 果指數, 果房當, 果掌數, 果指長, 果指重 果掌重과 正이 相關을 보였다. 6. 段階別 重回歸分析 方法에 의하여 추정된 結果에 의하면 收量에 가장 크게 영향을 미친 形質은 대부분의 吸芽에는 果掌重, 果掌數, 87.5㎝ 吸芽에는 果房當 果指數, 果指重, 112.5㎝ 吸芽에는 果梗長, 果指重, 果掌重 順으로 影響이 컸고 237.5㎝ 吸芽에서는 果掌數, 果掌重 順으로 收量에 크게 影響을 미쳤다. This experiment was carried out to elucidate the influence of different size of sucker at planting time on the plant growth and yield in bananas (Musa cavendishii Lamb.)cv. Dwarf Cavendish from March, 1985 to March, 1986 in the plastic vinyl house at Research Institute for Subtropical Agriculture, Cheju National University, Cheju, Korea. The results obtained are summarized as follows. Plant height, length and diameter of pseudostem, length and width of leaf, were increased in plant of large sucker at planting time. The larger sucker was planted, the earlier were the date of bunch head emergence and maturity, and the shorter were the days from bunch head emergence to maturity. Length and diameter of fruit stalk, length of bunch stalk, number of fingers/bunch and hand/bunch, and bunch weight, were ncreased but diameter and weight of finger decreased, as large sucker was planted. Number of fingers/bunch and hand were positively correlated with pseudostem diameter, length, and width of leaf, length and diameter of fruit stalk, and length of bunch stalk, but negatively correlated with the date of hunch head emergence, that is, decreased as the date of bunch head emergence was delayed. Bunch was positively correlated with the number of fingers and hands/bunch, length and weight of finger and hand weight. Yield characteristics which had a great influence on the yield were primarily hand weight and secondly number of hands, in general, and primarily length of fruit stalk, secondly finger weight and thirdly hand weight in 112.5㎝ size of sucker, and primarily number of hands and secondly hand weight in 237.5㎝ in size of sucker.