지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.12
- 수록면
- 50 - 57 (8page)
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Sulfonylurea(SU)-resistant weeds in seven annual weeds, Monochoria vaginalis, Scirpus juncoides and Cyperus difformis, etc., and three perennial weeds, S. planiculmis, Sagittaria pigmaea and Eleocharis acicularis as of 2010 since identification M. korsakowii in the reclaimed rice field in 1998. And the resistant Echinochloa oryzoides to ACCase and ALS inhibitors has been confirmed in wet-direct seeding rice field of the southern province, Korea in 2009. The resistant biotype by weed species demonstrated about 10- to 1,000-fold resistance, base on GR<SUB>50</SUB> (50% growth reduction) values of the SU herbicides tested. The products and applied area of SU-included herbicides have been increased rapidly, and have accounted for about 69% and 96%, respectively, in Korea. The concentration of herbicide required for 50% inhibition of ALS activity (I<SUB>50</SUB>) of the SU-resistant M. korsakowii was 14-to 76-fold higher as compared to the susceptible biotype. No differences were observed in the rates of [<SUP>14</SUP>Cbensulfuron uptake and translocation. Acetolactate synthase (ALS) genes from M. korsakowii resistant and susceptible biotypes against SU-herbicides revealed a single amino acid substitution of proline (CCT), at 197th position based on the M. korsakowii ALS sequence numbering, to serin (TCT) in conserved domain A of the gene. The alternative herbicides such as benzobicyclone, to be possible to control simultaneously the several resistant weeds, have been developing and using broadly, because the several resistant weeds have been occurring simultaneously in the same filed Mefenacet, fentrazamide and cafenstrole had excellent controlling effects on the ACCase and ALS inhibitors resistant when they were applied within 2 leaf stage.
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ABSTRACT
Introduction
Results and Discussions
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UCI(KEPA) : I410-ECN-0101-2014-520-002450439