• 제목/요약/키워드: herbicide

검색결과 1,027건 처리시간 0.033초

Researches using radio-labelled Herbicide in Korea

  • Lee, Kyu-Seung
    • 한국환경농학회지
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    • 제27권2호
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    • pp.191-204
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    • 2008
  • The research results using radio-labelled herbicides performed by Korean researchers were reviewed. All the research works were used $^{14}C$-labelled chemicals and generally carried out to know the behavior of herbicides in soils and plants. The degradation, mineralization and bound-residues formation are the major concerning area in soil studies, and uptake, translocation, metabolism, selectivity and resistance are in plant studies. Also few papers covered synthesis, formulation and animal metabolism.

Cadmium이 토양미생물에 의한 Butachlor 오염물질 분야에 미치는 영향 (Effects of Cadmium on the Degradation of Butachlor Pollutant by Microorganism)

  • 허태웅;정문호
    • 한국환경보건학회지
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    • 제20권3호
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    • pp.78-84
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    • 1994
  • The effects of heavy metal, Cd on the degradation of the herbicide butachlor (N-Butoxymethyl-2-chlor-2',6'-diethylacetanilide) in soils were examined the laboratory. The degradation of the herbicide in soil was greatly inhibited by the amendment of the heavy metal, Cd. The inhibited rate of Cd concentration was high in the order of 30 ppm>20 ppm> 10 ppm>0 ppm. And tile degradation rate of butachlor was high in order of 80 $\mu$M>40 $\mu$M>20 $\mu$M. The effects of Cd on the degradation of the butachlor in soil varied with concentration of heavy metal and butachlor.

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Salmonella/microsomal enzyme activation system에서의 농약의 돌연변이 유발성 (Mutagenicity of pesticides in the Salminella/Microsome System)

  • 변우현
    • 미생물학회지
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    • 제14권3호
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    • pp.128-128
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    • 1976
  • 19 pesticides including 12 insecticides, 2 herbicides and 5 fungicides have been tested for mutagenic activity in the Salmonella/microsome system. It was found that insecticides, DDVP, Trichlorfon, Sumithion, Naled, fungicide, TMTD and herbicide NIP induced base substitute mutation and herbicide MO frameshift mutation. Mutagenicity of Sumithion and NIP was appeared only after rat microsomal enzyme activation and that of TMTD was increased after the microsomal enzyme activation.

Salmonella/microsomal enzyme activation system에서의 농약의 돌연변이 유발성 (Mutagenicity of pesticides in the Salminella/Microsome System)

  • 변우현;현형환;이세영
    • 미생물학회지
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    • 제14권3호
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    • pp.123-134
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    • 1976
  • 19 pesticides including 12 insecticides, 2 herbicides and 5 fungicides have been tested for mutagenic activity in the Salmonella/microsome system. It was found that insecticides, DDVP, Trichlorfon, Sumithion, Naled, fungicide, TMTD and herbicide NIP induced base substitute mutation and herbicide MO frameshift mutation. Mutagenicity of Sumithion and NIP was appeared only after rat microsomal enzyme activation and that of TMTD was increased after the microsomal enzyme activation.

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Acetohydroxyacid Synthase

  • Duggleby, Ronald G.;Pang, Siew Siew
    • BMB Reports
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    • 제33권1호
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    • pp.1-36
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    • 2000
  • Acetohydroxyacid synthase (EC 4.1.3.18) catalyses the first reaction in the pathway for synthesis of the branched-chain amino acids. The enzyme is inhibited by several commercial herbicides and has been subjected to detailed study over the last 20 to 30 years. Here we review the progress that has been made in understanding its structure, regulation, mechanism, and inhibition.

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Metabolism of a New Herbicide Metamifop in Rats

  • Park, H.W.;Moon, J.K.;Choi, H.;Lee, H.S.;Liu, K.H.;Kim, J.H.
    • 한국환경성돌연변이발암원학회:학술대회논문집
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    • 한국환경성돌연변이발암원학회 2004년도 춘계학술대회
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    • pp.132-132
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    • 2004
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Molecular Breeding for Plant Disease Resistance : Prospects and Problems

  • Park, Hyo-Guen
    • The Plant Pathology Journal
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    • 제17권1호
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    • pp.1-8
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    • 2001
  • The technique of plant transformation has started to show off its great power in the area of plant breeding by commercially successful introduction of transgenic varieties such as herbicide tolerant soybean and insect resistant corn in USA with an unimaginable speed. However, in contrast with the great success in the commercialization of herbicide tolerance and insect resistance, the transformation works on disease resistance has not yet reached the stage of full commercialization. This review surveys the current status of molecular breeding for plant disease resistance and their limits and problems. Some novel ideas and approaches in molecular breeding for disease resistance are introduced.

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EFFECTS OF THE HERBICIDE, BUTACHLOR, ON NITROGEN FIXATION IN PHOTOTROPHIC NONSULFUR BACTERIA

  • Lee, Kyung-Mi;Kim, Jai-Soo;Lee, Hyun-Soon
    • Environmental Engineering Research
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    • 제12권4호
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    • pp.136-147
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    • 2007
  • In an effort to identify possible microbes for seeking bioagents for remediation of herbicide-contaminated soils, seven species of phototrophic nonsulfur bacteria (Rhodobacter capsulatus and sphaeroides, Rhodospirillum rubrum, Rhodopseudomonas acidophila, blastica and viridis, Rhodomicrobium vannielii) were grown in the presence of the herbicide, butachlor, and bacterial growth rates and nitrogen fixation were measured with different carbon sources. Under general conditions, all species showed 17-53% reductions in growth rate following butachlor treatment. Under nitrogen-fixing conditions, Rb. capsulatus and Rs. rubrum showed 1-4% increases in the growth rates and 2-10% increases in nitrogen-fixing abilities, while the other 5 species showed decreases of 17-47% and 17-85%, respectively. The finding that Rp. acidophila, Rp. blastica, Rp. viridis and Rm. vannielii showed stronger inhibitions of nitrogenase activity seems to indicate that species in genera Rhodobacter and Rhodospirillum are less influenced by butachlor than those in Rhodopseudomonas and Rhodomicrobium in terms of nitrogen-fixing ability. Overall, nitrogenase activity was closely correlated with both growth rate and glutamine synthetase activity (representing nitrogen metabolism). When the carbon sources were compared, pyruvate (three carbons) was best for all species in terms of growth rate and nitrogen fixation, with malate (four carbons) showing intermediate values and ribose(five carbons) showing the lowest; these trends did not change in response to butachlor treatment. We verified that each of the 7 species had a plasmid ($12.2{\sim}23.5\;Kb$). We found that all 7 species could use butachlor as a sole carbon source and 3 species were controlled by plasmid-born genes, but it is doubtful whether plasmid-born genes were responsible to nitrogen fixation.

제초제(propanil, butachlor) 저항성 잡초 선발 방법에 관한 연구 (Study on Selection Method of Herbicide (propanil, butachlor) Resistant Weeds)

  • 정성엽;김영미;박재현;이재현;김학윤;이인중;신동현;김길웅
    • Current Research on Agriculture and Life Sciences
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    • 제17권
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    • pp.65-70
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    • 1999
  • 피의 유묘 및 줄기를 사용하여, 실내에서 간편하게 제초제 저항성 개체를 선발하기 위해 실시한 실험결과를 요약하면 다음과 같다. 1. 유묘 검정법으로 6일 동안 돌피를 생육시킨 결과, 돌피의 생육이 제초제 추천량의 1/4 처리 농도에서 현저히 억제되었다. 2. Stem node 검정법으로 20일 동안 돌피를 생육시킨 결과, 돌피의 생육이 제초제 추천량의 1/2 처리 농도에서 현저히 억제되는 것으로 나타났다. 3. 유묘 검정법과 stem node 검정법을 이용한 생물검정의 결과, 유묘 검정법이 stem node 검정법 보다 빠른 시간 내에 그리고 낮은 농도의 범위에서 저항성 반응을 효과적으로 검정할 수 있었다.

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건답직파재배(乾畓直播栽培)에서 재생지(再生紙) 멀칭에 따른 잡초발생(雜草發生)과 벼의 생육(生育) 및 수량(收量) (Effect of Recycled Paper Mulch on Weed Occurrence and Yield in Dry-seeding Rice Culture)

  • 이변우;최일선
    • 한국잡초학회지
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    • 제18권4호
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    • pp.281-285
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    • 1998
  • 골판지 고지로 제조된 재생 멀칭지를 벼 파종시 피복하여 멀칭지의 분해, 잡초 발생, 벼의 생육 및 수량을 검토하였다. 그 결과를 요약하면 다음과 같다. 1. 건답상태에서는 멀칭지의 분해가 거의 이루어지지 않았으며 관개한 후부터 분해속도가 급격히 빨라져서 파종 후 80일인 7월 20일경까지 멀칭지는 50% 정도 분해되었다. 2. 벼 생육초기에는 종이멀칭에 의하여 효과적으로 잡초가 방제되었으며, 생육후기에는 멀칭지의 분해 및 후기잡초의 발생으로 방제효율이 다소 떨어지기는 하였지만 잡초 방제가는 제초제에 의해 잡초를 방제한 처리구보다 높게 나타났다. 3. 멀칭처리구의 수량은 무멀칭 제초제 처리구와 차이가 없었다. 4. 이상의 결과로부터 볼 때 벼 건답직파(乾畓直播)재배에서 종이멀칭에 의해 잡초발생을 효과적으로 억제할 수 있으며, 수량 또한 제초제에 의해 잡초방제를 하는 관행 재배와 큰 차이가 없을 것으로 판단되었다.

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