새롭게 도입된 얌빈의 국내 재배기술 확립을 위하여 육묘조건, 적심, 적화, 재식밀도 등의 재배요인에 의한 생장과 수량반응을 조사한 결과는 다음과 같다. 얌빈은 P.E. 하우스내에 전열 온상을 설치하여 평균 22℃로 유지하여 30일(적산온도 650℃) 육묘하면 건전묘 생산이 가능하였다. 트레이 규격에 따른 출현 특성의 차이는 없으며, 셀 크기가 클수록 묘 생장량이 증가하지만 육묘효율, 이식작업의 편의성을 고려하여 128공 트레이가 적합하였다. 7월 하순에서 8월 상순에 120 ㎝ 높이에서 적심을 하면 수량이 23% 가량 많아지며 8월 하순에서 9월 상순 사이에 적화를 하면 괴경수와 괴경중이 증가하여 수량이 32% 가량 많아진다. 50 ㎝×30 ㎝로 정식하였을 때 관행 100 ㎝×30 ㎝보다 수량이 30% 증가하였다. 적심, 적화, 재식밀도 최적조합처리는 무처리에 비해 경제적으로 107%의 이익적인 요소가 발생하였다. 이상의 연구 결과 얌빈의 최적 재배기술 적용을 통해 국내에서 새로운 소득 작목으로서 유망할 것으로 판단된다.

Background : study of long yam and short yam (Dioscorea. opposita) are cultivated in temperate regions but tropical yam (Dioscorea alata) are mainly grown in Africa and sub-tropical regions cultivated crops. Recent tropical yam cultivation area of Korea increased but lack the proper cultivation techniques to climate warming. This study was conducted to elucidate the effect of the timely harvest on Tropical yam at 2015 in Institute of Bioresources Research, GBARES. Methods and Results : Tuber of tropical yam were cut as 40 g, and dust-coating sterilized with lime. Seedlings were grown in heating wire installed seed bed from 11. March to 16. May. Experimental field were fertilized 2,000 kg compost, 34 kg N2, 28 kg P2O5, and 28 kg K2O. All amount of compost and P2O5 treated as basal fertilizer. N2 and K2O treated 14 and 10 kg of basal fertilizer, and 20 and 18 kg of additional fertilizer, respectively. Tillage, covering black PE film with 60×25 cm spacing holes on 120 cm row were conducted. Emergence days from 6. April to 18 May until 28 days to 36 days but 15. June and 9. June were each 19 and 7 days. Dry weigh in early stage due to seedling date, while seedling date according from 6. April to 18. May had no difference. seedling date was not effective on total number of tuber but number of marketable tuber (over 200 g). Marketable tuber number of seedling date according to 20. April was increased 35~132% as 4,028 number per 10 a. And tuber with 20. April was 13~73 g heavier. Tuber yield and marketable tuber yield of seedling date as affected by 20. April were respectively 2,518 and 1,273 kg per 10 a compared to 6. April and from 4. May to 15. June as 1,743~2,457 kg and 484~1,027 kg. Conclusion : Tropical yam is low temperature in the cultivation of Korea but also adverse environmental conditions. Frost is not mature enough off before harvesting. Yam had significant increased marketable tuber (over 200 g) yield due to seedling in mid-April Requires cultivation technology.

This study was conducted to elucidate the photosynthetic response to the environment and establish optimum cultivation conditions for the Korean endemic plant, Aster koraiensis. Photosynthetic characteristics according to growth stage, light, CO2, and soil water potential were investigated. During the first year of transplanting, photosynthetic rates were drastically increased until June, after which they slowly declined, During the second year, photosynthetic rates declined throughout the entire growth period. The highest level of light compensation point was shown the early growth stage. Photosynthetic rates affected by intercellular CO2 concentration were maintained or decreased over the CO2 saturation point. The lowest CO2 compensation point was 16.1 μmol･mol -1 during March. The morphological changes of leaves were observed due to shading with chlorophyll contents increasing. Photosynthetic rates were higher at 0% and 50% shading treatments than at 75%. There were rarely any morphological changes of leaves due to soil moisture, however, changes to leaf compactness were observed. Photosynthetic rate, apparent quantum yield, and respiration rate increased, whereas water use efficiency decreased over -25 kPa of soil moisture.

Background : Yam absorbs nutrition and water through water absorptive root generated from head of rhizome. Round-shaped yam (RSY, Dioscorea opposita) and tropical round-shaped yam (TRSY, Dioscorea alata)are more sensitive to drought because of shorter head of rhizome and shallower root compared to long yam or short yam. This study was conducted to elucidate the effect of irrigation on RSY and TRSY yam at 205 in Institute of Bioresources Research, GBARES. Methods and Results : Tuber of RSY and TRSY were cut as 40 g, and dust-coating sterilized with lime. Seedlings were grown in heating wire installed seed bed from 25. March to 16. April. Experimental field were fertilized 2,000 kg compost, 34 kg N2, 28 kg P2O5, and 28 kg K2O. All amount of compost and P2O5 treated as basal fertilizer. N2 and K2O treated 14 and 10 kg of basal fertilizer, and 20 and 18 kg of additional fertilizer, respectively. Tillage, installation of drop-watering tapes, and covering black PE film with 60×25 cm spacing holes on 120 cm row were conducted. 20 L per m2 was irrigated 7 days interval except rainy day from middle of May to late of September. RSY had high emergence rate in early stage due to irrigation, while TRSY had no difference. Irrigation was not effective on total number of tuber but number of marketable tuber (over 200 g). Marketable tuber yield of RSY according to irrigation was increased 89% as 1,147 kg per 10 a. And tuber with irrigation was 73 g heavier. Tuber yield and marketable tuber yield of TRSY as affected by irrigation were respectively 2,611 and 1,715 kg per 10 a compared to control, 1,462 and 428 kg. And irrigated tuber was 66 g heavier. Conclusion : TRSY had more effective on irrigation than RSY. Both of yam had significant increased marketable tuber yield due to irrigation. Therefore RSY and TRSY are necessarily irrigated because of those absorptive characteristics, short head of tuber and shallow root.

새로운 참깨품종 ‘밀성’을 농촌진흥청 작물시험장 영남 시험장에서 2007년에 개발하였다. 교배조합은 이리4호와 ‘수원131호’로 고품질, 다수성, 내병성을 목적으로 하였다. ‘밀성’은 계통육종법을 이용하여 생산력검정시험, 지역적응성 검정시험을 거쳐 개발되었다. ‘밀성’은 소분지이고 3과성, 2실 4방의 꼬투리를 가지고 있다. 그리고 ‘밀성’의 개화기는 7월 1일로 표준품종인 ‘양백’보다 2일 빨랐다. 또한 성숙기는 8월20일로 ‘양백’과 같았다. ‘밀성’의 경장은 129 cm로 ‘양백’과비슷했다. 하지만 ‘밀성’은 ‘양백’보다 많은 27개의 착삭절을가지고 있어 밀삭형이다. ‘밀성’의 천립중은 2.79 g으로 ‘양백’보다 컸다. ‘밀성’의 역병저항성 및 도복저항성은 ‘양백’과비슷했고 ‘밀성’의 수량은 98 kg/10a로 ‘양백’보다 5% 증수하였다. ‘밀성’은 유지함량은 ‘양백’보다 적었으나 단백질함량은 많았다. 지방산 중 올레산의 비율은 45.8%였고 세사민함량은 2.8 mg/g, 세사몰린 함량은 3.0 mg/g이었다.

미흑깨'는 2006년에 국립작물과학원 영남농업연구소에서 육성한 품종으로 내병성은 약하지만 다수성 품종인 '유성깨'에 내병성이 강하면서 다수성인 '수원131호'를 교배한 후대에 고품질 다수성인 '경북1호'를 1994년에 3원교잡하여 육성한 품종으로 표준품종에 비하여 수량성이 높고 총아미노산 함량이 많으면서 검정색 착색도가 진한 고품질 품종이다. 경장은 125 cm이고, 주당 삭수는 77개이다. 1,000립중은 2.57 g이고 기름함량은 표준품종보다 약 4

윤흑'은 내병성이 개선되고 다수성인 품종을 육성하기 위하여 다수성 계통인 유성깨에 고품질 내병성인 건흑깨를 1995년에 인공교배하여 육성한 품종으로 6년간의 계통육성을 통하여 유망계통을 선발하고 2002년부터 3년간 생산력 검정시험을 거친 후 전국 9개의 지역에서 3년간의 적응시험을 통하여 선발된 것으로 '윤흑'은 수량성이 높고 내도복성이면서 검정색 착색도가 진하고 레놀렌산 함량이 많은 고품질 품종이다. 또한 우리나라 기후조건에서 단작 및 이모작형의 광

마는 전 세계적으로 오랜 기간 동안 식용 및 약용으로 사용되어 온 중요한 생물자원이다. 본 연구에서는 2009년 경북 안동지역에서 재배된 D. batatas (경북1호 및 4호), D. alata L.(경북5호 및 6호), D. bulbifera (둥근마) 및 D. nipponica (부채마)로부터 메탄올 추출물을 조제하고, 이들의 항산화, 항혈전, 항균 활성을 평가하였다. 먼저 수분함량의 경우 마의 종류에 따라 54.7%∼83.2%로 다양하게