導入고추의 耐乾性 評價

朴圭煥,藤本幸平,李夏潤,申聖鍊,趙殷衡,李愚升 慶北大學校 農業科學技術硏究所 1988 慶北大農學誌 Vol.6 No.-

고추의 16個 導入系統에 對해서 耐乾性을 알기 爲하여 鉢植한 고추를 斷水處理하고 一定期間後에 葉의 WSD値를 測定해서 耐乾性을 評價하였으며 成熟葉의 氣孔密度를 調査하여 WSD値와의 相關을 求하였다. WSD値로부터 耐乾性이 强한 系統의 順位는 No.3446, C. chaconce, Gogoshari, 八房이였다. 成熟葉의 氣孔密度와 WSD値와의 相關(r=0.581)이 認定되었다. Sixteen introductions of pepper (Capsicum annuum) were tested for drought resistance. Watering was stopped to the plants grown in perlite in pots to induce drought. After certain period of time, WSD value and stomatal density of mature leaves were measured for evaluation of drought resistance. A correlationship between WSD value and stomatal density was determined. On the basis of WSD value, the most drought-resistant varieties were No.3446, C. chacoence, Gogoshari, and Yatsufusa in a descending order and a significant positive correlation, r=0.581, between WSD value and stomatal density was observed.

내실과 합리적 운영을 다지는 학회

이우승 한국원예학회 1996 원예과학기술지 Vol.1 No.2

참외 연장재배 기술상의 문제점과 개선방향

이우승 한국생물환경조절학회 1999 한국생물환경조절학회 심포지움 및 기타간행물 Vol.- No.-

寒地系 마늘球의 解部的 特性

李愚升 경북대학교 1985 論文集 Vol.40 No.-

Garlic bulbs of northern strain, cv. Youngdoug-Jaerae, Gumreung-Jaerae and Youngchon-Jaerae were collected from markets in 1978, grouped by bulb size, and peeled into cloves to study the characteristics of bulbing and the size distribution of cloves. 1. Percentages of the weights of bundling straw, roots, stems and leaves, bulbs, peeled cloves and healthy cloves to the initial weight of a Jub (a bundle of 100 bulbs) were 1.4, 2.9, 4.9, 90.8, 86.3, and 82.0%, respectively in Youngdoug Jaerae and 1.1, 2.8, 6.3, 89.0, 85.0, and 76.4%, respectively in Gumreung Jaerae. The larger the bulbs, the higher the ratio in weight of the peeled cloves to the bulbs. The smaller the bulbs, the higher the ratio of the weights of stems and leaves, and bundling straw to the initial weight of a Jub of garlic. 2. The larger the bulbs, the more the number of primary cloves and the total number of cloves per bulb in all three cultivars. The primary cloves in the outer layer of the bulbs were more in number and heavier in weight than those in the inner layer. 3. In all three cultivars, the range of the clove size was narrow in small bulbs but wide in large bulbs. The larger the bulbs, the more the large cloves per bulb. Frequency distribution of cloves in size showed a peak on the medium class, irrespective of bulb size. 4. The larger the bulbs, the more the secondary bulb formation. The secondary bulb formation was found more in the outer layer than in the inner layer of a bulb.

양파의 채종 기술 개선에 관한 연구 : 4. 화학물질 처리에 의한 환경단축 4. Reduction of Flower Stalks Height by Chemical

李愚升,趙殷衡,藤本幸平 慶北大學校 1989 論文集 Vol.48 No.-

Ethrel 750ppm was sprayed on the leaves of onion at one week interval from just after flower bud differentiation to just after bolting to reduce the flower stalk height. Six concentration levels of ethrel (0, 750, 1,000, 1,500, 2,000, and 5,000ppm) were sprayed on the leaves on April 11. In ethrel 750ppm, bolting percentage was the least in April 18 application at May 3 count followed by April 25 application. Reduction of flower stalk height was maximum at April 18 application in 750ppm followed by April 25, March 24, April 11, May 2, April 4, May 9, March 28 in order. Germination speed and germination percentage were the least in ethrel 750ppm applied on April 18 as compared to control. Bolting was delayed, height of flower stalks was reduced, and germination speed and percentage were decreased with increased concentration of ethrel in the range of over 1,000ppm. Foliar application of ethrel 750ppm or lower just after bolting would be beneficial in reduction of flower stalk height in practice.

마늘 貯藏中 鱗片의 成分含量 變化

李愚升 慶北大學校 1977 論文集 Vol.24 No.-

Changes in the chemical compositions of the Korean garlic cloves were investigated about the several local varieties at different storage period. The obtained results are as follows; Protein content was reduced in the storage leaf as prolonged storage period, while tends to increase in the foliage leaf. Protein contents were produced much more in the northern strains than the southern strains as prolonged storage period. Sugar contents of the storage leaf were increased as prolonged storage period, and the some trends was found in the foliage leaf. Sugar content showed markedly increase in the foliage leaf as compared with the storage leaf.

남북통일과 언론의 역할

이우승 인천가톨릭대학교 출판부 1998 누리와 말씀 Vol.- No.4

導入마늘의 鱗片着生 特性

李愚升,申聖鍊 慶北大學校 1979 論文集 Vol.28 No.-

This experiment was conducted to determine the characteristics of clove development of various garlic strains introduced from Spain and Argentina which the cloves differentiate in the axils of only two neighbouring leaf-sheaths, and Formosa, Mexico and Argentina which the cloves differentiate in the axils of several leaf-sheaths. The results obtained can be summerized as follows. Numerous primary cloves were formed from the larger bulb on the garlic cloves differentiate in the axils of only two neighbouring leaf sheaths. Spain garlic strain produced more cloves from inner-layer than outer layer cloves while outer-layer cloves from smaller bulb and inner-layer cloves from large bulb of Argentina garlic strain produced more cloves. Secondary growth was low from both Spain and Argentina garlic strains. In the frequency of clove number per clove weight, middle weight showed increasing tendency in clove number. Large cloves formed heavier bulb. Middle and smaller bulbs of Spain garlic strain showed heavier cloves from inner-layer than that of outer-layer cloves. Large bulb of Spain garlic strain and Argentina garlic strain were heavier from outer-layers clove than of inner-layer cloves. In garlic clove formed in the axils of several leaf sheaths cloves formation of Formosa strain was succeeding 6 leaf axils, 6∼8 leaf axils from Mexico strain and 5 leaf axils from Argentina strain. Number of cloves formed from one leaf axil and weight of cloves was more numerous on second leaf axil from out side of the bulb and decreased from inner side of the bulb. In the number of cloves formed per leaf axils, Formosa strain formed 1∼9 cloves, 1∼10 cloves from Mexico strain and 1∼6 cloves from Argentina strain. Heavier bulb produced the most numerous cloves than smaller bulb from one leaf axil.

마늘 收穫에 關한 基礎的 硏究

李愚升 慶北大學校 새마을硏究所 1978 農村과 科學 Vol.1 No.-

마늘의 寒地系 寧越在來를 供試하여 收穫의 早晩과 收穫時 ??葉의 除去程度가 球重 等에 미치는 影響을 試驗한 結果는 다음과 같으며 主産地 栽培農家의 收穫實態를 調査하고 論議하였다. 鱗片重은 收穫期가 늦을수록 增加되었다. 鱗片의 肥大는 5月中旬頃부터 開始되어 以后 急速히 增加되었고 6月下旬에는 緩慢하였다. 마늘 葉面積의 時期別 變化는 5月 21日頃까지는 急激히 增加하나 그 以后는 緩慢하게 減少되었고 6月下旬에는 激減되었다. 葉面積에 對한 乾物重의 比率은 5月下旬을 中心으로 그 以前과 以后에 差異가 있었다. 마늘 收穫后 自然乾燥 過程에서 鱗片重은 ??葉 無除去區에서 가장 增加하였고 그다음은 球의 基部로부터 25cm 남기고 除去한區, 7cm 남기고 除去한區의 順이 였다. 鱗片의 乾物重은 收穫當日의 것보다 收穫時 ??葉의 除去程度가 적을수록 增加하였다. 마늘의 鱗片肥大를 基準으로 하는 收穫適期는 6月20日 以后이다. This study was conducted to determine the effect of the varied harvesting times including the removal of leaf and stem portion on garlic bulb weight. Garlic leaf area increased rapidly till the 21st of May and after that decreased slowly. Marked decrease occured during late June. Significant difference in the ratio of dry weight to leaf area was observed before and after the 21st of May. Development of garlic clove began at mid-May and then grew slowly. Garlic clove weight increased as the harvesting time delayed. The highest dry weight of garlic clove was obtained with the non-removed control plot, followed by the plots having 25cm and 7cm height portion including bulb which removed the rest, respectively. Dry weight of garlic clove increased as the removal of leaf and stem portion decreased. The optimal harvesting time was determined to be after the 20th of June, considering the developmental phase of garlic clove.

韓國園藝學會 會長 故 李庚熙 博士님을 追慕하며

李愚昇 한국원예학회 1988 한국원예학회 학술발표요지 Vol.6 No.2