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Butachlor가 귀리의 세포분열(細胞分裂) 및 단백질(蛋白質) 합성(合成)에 미치는 영향(影響)
권성환,김재철,Kwon, S.W.,Kim, J.C. 한국잡초학회 1989 Weed&Turfgrass Science Vol.9 No.3
식물생장(植物生長) 억제제(抑制劑)인 butachlor의 작용기구(作用機構)를 구명(究明)하기 위하여 본(本) 제초제(除草劑)가 생장기본요소(生長基本要素)인 세포분열(細胞分裂) 및 단백질(蛋白質) 합성(合成) 억제(抑制)에 미치는 영향(影響)은 다음과 같다. 1. Butachlor의 세포분열(細胞分裂) 억제(抑制) 효과(效果)는 18시간(時間) 처리후(處理後) $10^{-6}M$은 9.3%, $10^{-5}M$은 28.2%의 억제(抑制)를 보였으며, 특히 $10^{-3}M$ 농도(濃度)에서는 81.6%의 현저한 억제(抑制)를 보임으로서 본(本) 제초제(除草劑)는 농도(濃度)가 높아질수록 세포분열(細胞分裂) 억제효과(抑制效果)도 증가(增加)하였다. 2. 단백질(蛋白質) 억제(抑制) 효과(效果)는 18시간(時間) 처리후(處理後) $10^{-4}M$ 농도(濃度)에서 22.9%, $10^{-3}M$은 34.1%의 억제효과(抑制效果)를 보였다. 또한 24시간(時間) 처리후(處理時) $10^{-4}M$은 34.3%로 로서 18시간(時間) 처리후(處理後)의 $10^{-3}M$과 거의 같은 억제효과(抑制效果)를 보이고 있다. 이와같이 butachlor 는 농도(濃度)와 처리시간(處理時間)이 길어짐에 따라서 단백질(蛋白質) 농도(濃度)의 증가(增加)를 보였다. 3. Butachlor 처리(處理)는 전체적인 단백질(蛋白質) 합성(合成)을 억제(抑制)하였고 특히 분자량 16, 18, 30, 43 그리고 43.5KD의 단백질(蛋白質)을 억제(抑制)하는 것으로 나타났으며 귀리(Avena sativa L.)의 root tip은 100,000 이하의 polypeptide subunit의 단백질로 구성(構成)되었다. The effects of varying concentrations and durations of butachlor [N-(bytoxymety 1,)-2-chlor -2, 6-diethy lacetanilide treatment on oat(Avena sativa L.) root cell division and protein synthesis were studied. The highest concentration ($1{\times}10^{-3}M$) of butachlor caused the significant inhibition of cell division after 18hrs treatment. After 18hrs treatment, 59% and 82% inhibition of cell division occurred at $1{\times}10^{-4}M$ and $1{\times}10^{-3}M$, respectively, while 9% inhibition of cell division did at $1{\times}10^{-6}M$ concentration at the same exposure period. To investigate protein synthesis, the oats were treated for 18 and 24hrs with concentrations ranging from $1{\times}10^{-6}M$ to $1{\times}10^{-3}M$ butachlor. After 18hrs, butachlor treatment of oat with $1{\times}10^{-4}M$ inhibitited 23% protein synthesis, and butachlor treatment with $1{\times}10^{-4}M$ caused 34% inhibition after 24hrs. With SDS-PAGE of proteins extracted from oat root tips, butachlor usually inhibited the 16, 18, 30, 43 and 43.5 kD polypeptide, and proteins of root tips are made up of subunits below 100 kD polypeptide.
저온환경이 수박의 냉해발생과 형태적 증상에 미치는 영향
권성환,전형권,최동칠,김재철 (사) 한국생물환경조절학회 2001 시설원예‧식물공장 Vol.10 No.1
This experiment was carried out to investigate temperature distribution in the double layer plasticgreenhouse and chilling injury to watermelons grown during a cold season. Temperatures on easternand western sides were about 6.2% and 14.7%, respectively, lower than that of central section in asouth-north oriented greenhouse. Daily mean temperature in the northern part was about 1-2oChigher than that in the southern part of the greenhouse. In terms of vertical temperature distributioninside the greenhouse, temperature at ground surface was approximately 1oC lower during the dayand 0.5oC higher during the night than that in the upper part, 2 m from the ground surface. Leafmould medium kept higher ground temperatures as compared to sandy soil, red clay soil, or clay soil.More chilling injured plants were observed in the western side as compared to the eastern side, and inthe northern and southern sides as compared to the central part of the greenhouse. A symptom ofchilling injury on leaves was upward curling, followed by chlorosis and necrosis. A severe symptom ofchilling injury to plants was the breakdown of vascular bundles. Root growth was more susceptiblethan stem or leaf growth to low temperatures. At 30oC, main and lateral roots grew vigorously, whilelateral root growth was inhibited at 22oC and root growth was stopped at 14oC and 6oC. Small andpuffy fruits with dark green surface were produced at low temperatures. In cold season cultivation ofwatermelons, it is suggested that plants be transplanted in the central part and train to sides of thegreenhouse in order to reduce chilling injuries.
권성환,엄미정,진성용,김희준,송영주,노일래 경상대학교 농업생명과학연구원 2016 농업생명과학연구 Vol.50 No.3
Water dropwort(Oenanthe javanica) is grown usually in submerged paddy field and is widely used as additive in foods like Kimchi, fish soup. However, its cultivation in the under submerged cultivation has been known to cause the reduction in quality of water dropwort plants mainly due to the presence of dirt and some parasites like leeches and water animals. Thus, this study was conducted to evaluate a wetland cultivation(WLC) of water dropwort plants compared to the conventional submerged cultivation(SBC) in the greenhouse paddy field conditions. WLC and SBC treatments maintained water levels to the depth of less than 5cm and about 20cm, respectively. Vegetative stem sections were planted in September and plants were harvested in early April. The results showed that height and yield of water dropwort plants were higher in SBC than in WLC. Total yield per 10a in WLC was 12.3% lower than in SBC (2.34 vs 2.63 tons). However, the useful quality factors such as vitamin C, inorganic nutrients, chlorophyll, and anthocyanin contents were found to be considerably higher in WLC. That is Ca, K, Mg, and anthocyanin contents in the stem were increased 235%, 6%, 143% and 290%, respectively, compared to those of SBC plants. The length of underground internodes from WLC elongated about 2 times more than that of SBC, resulting in an increase in plant length and advance in harvest time. On the other hand, water dropwort plants with wetland cultivation can be produced with good cleanliness and quality, but the cultivation system should be optimized and developed to get more yield the same as SBC.
Uniconzole과 Ancymidol 엽면처리가 국화의 生長에 미치는 影響
權晟煥,金裁喆 全北大學校 1993 論文集 Vol.35 No.-
Foliar applied uniconazole and acymidol inhibited plant height in Chrysanthemum morifolium Ramat. Greater retardation appeared in treatment of 10 ppm applied twice 7 day apart, than in once application of 20 ppm concentration of growth retardants. Also, greater retardation appeared in 15 day than in 45 day after application. Uniconazole was more effective than ancymidol in controlling height after 45 day. "Beksan" plant growth was inhibited most effectively by uniconazole, but "Choyeonbek" was inhibited less than the others in Chrysanthemum species. Plant height was decreased by treatments, while stem diameter was increased as compared to nontreatments. After treatments, plants had a move intense green color than control plants. There was a 29.7% increase in chlorophyll content in 10 ppm concentration of uniconazole.