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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.
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.