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CHO, Jeoung-lai,SHON, Gil-man 慶尙大學校 1988 論文集 Vol.27 No.2
Tomato Spotted Wilt Virus (TSWV)는 國內에서는 發生이 未確認된 病으로서 토마토를 비롯 여러 作物에 큰 被害를 주며, 罹病되면, 壤疽現象을 보이면서 生長點 部位가 萎縮되고 靑銅色으로 變色, 枯死한다. 本 試驗은 TSWV의 媒介蟲을 防除하여 TSWV의 罹病을 豫防코자, 토마토 苗床에 Carbofuran粒劑를 處理한 試驗 및 本圃에 몇가지 殺蟲劑를 3回 撒布한 것으로서, 試驗結果는 다음과 같다. 1.播種前 Crabofuran粒劑의 苗床撒布效果는 認定되지 않았다. 2.本圃에 殺蟲劑를 徹布하면 TSWV의 發生을 顯著히 減少시킬 수 있었다. 3.處理藥劑中이병율이 가장 낮고 防除價가 가장 높었던 Phosophamidon의 撒布效果가 가장 優秀한 것으로 判斷되었다. 4.本圃에서 最終 藥劑徹布後 4週부터 TSWV의 ?病이 增加하는 것으로 보아 1~2回 더 延長撒布함이 좋을것으로 思料된다. An experiment was carried out to study the efficacy of different insecticides in controlling the sprend of Tomato Spotted Wilt Virus(TSWY) Lintomatas(CV. Pusa Ruba)during 1985. growing season Central Plant Protection Training Institute. Hyderabad 30. Andhra Pradesh. India. The nursery was divided into two parts. one received cabofuran granules at 1kg a.i/ha.whereas other part did not. In main field. three insecticides including cypermethrin were sprayed on the foliage of tomato plants on the 25th, 35th and 45th day after frans-planting. In this study it was found that there is no significant difference be tween carbofuran and no contrall nonfreated in the nursey. And after transe planting. sprasying insecticides helped in controlling the new TSWV infection.Among the chemicals which were applied on the foliage,phosphamidon appears to be better comparatively followed by malathion and cypermethrin. In order to prevent TSWV incidence up to late stage of tomato plants. additional 1.2 sprays in the main field are required after final application of chemicals in normal husbandry.
Induced Variability of Radish Plants by Microinjecting Exopenous DNA
CHO, JEOUNG LAI,PARK, JUNG CHOON,KANG, SEONG MO 경상대학교 유전공학연구소 1986 遺傳工學硏究所報 Vol.5 No.-
It is required that as many genetic variants as possible be available for crop plant improvement. An experiment was conducted to help to broaden genetic diversity of crop plants through a non-conventional means. The DNA samples extracted from 'Altari' radish (Raphanus sativus L. var Altari) leaves of ethidium bromide solution were microinjected into the ovaries of 'Kungzung' radish(Raphanus sativus L.). Percent abortion increased, while the size of pods and the number of seeds per pod decreased by the treatment in host plants. Such changes were more dramatic in plants treated with the mutagen than with DNA. Number of seeds per pod was only 18% of the controls when treated with the mutagen. Results indicated that the mechanical damage of microsyringe could not be accounted for such changes. We obtained 7 transformed plants as judged by their hypocotyl color and the shape of the leaves. The shape of their roots is yet to be examined. Radish embryos could be excised only 18 days after pollination, when the pods reached almost to the final size. One ppm NAA alone and 0.1 of 0.5 ppm BA alone showed best growth of the embryos taken 18 days after pollination.