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RISS 인기검색어
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- 저자 : Yerkes, Carla N. (검색결과 4 건)
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Social risks and the Corporatist state: A successful means of responding to social risks?
Mara A. Yerkes 한국행정학회 2014 International Review of Public Administration Vol.19 No.3
This article addresses questions of how and why the Dutch corporatist welfare statehas succeeded in responding to social risks where others have struggled. Summarizing the major findings from a primarily qualitative, historical, in-depth case study carried out in the Netherlands (including 52 in-depth interviews and extensive document analysis of +/− 120 policy documents from 1995 to 2009), this article provides suggestions for developing our theoretical understanding of the role of the state in social risk protection. How does the Dutch welfare state respond to changing and emerging social risks? Why does the Dutch welfare state succeed in its response? The answers to these questions demonstrate a transformation of the welfare state, and challenge existing theoretical understandings of social risk protection. The consequences of this response, however, include a possible increase in social inequality.
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Le, Duy,Nguyen, Chon M.,Mann, Richard K.,Yerkes, Carla N.,Kumar, Bobba V.N. The Korean Society of Plant Biotechnology 2017 식물생명공학회지 Vol.44 No.4
Barnyardgrass (Echinochloa crus-galli) is one of the worst weeds in rice (Oryza sativa), but there are few reports about the genetic diversity and herbicide resistance of barnyardgrass in Vietnam. In this study, we used random amplified polymorphic DNA (RAPD) analysis and greenhouse testing to study the genetic diversity and quinclorac resistance levels of 15 Echinochloa crus-galli populations in the Mekong Delta, Vietnam, and the state of Arkansas, U.S. The quinclorac resistance of Echinochloa crus-galli populations in Vietnam was confirmed; 9 populations were resistant to quinclorac with R/S ratios ranging from 1.9 to 6.3. Six oligonucleotide primers produced a total of 55 repeatable bands of which 46 were polymorphic (83.3% average) among the 15 populations. Genetic distance was calculated, and cluster analysis separated the 15 populations into 2 main clusters with the genetic distances within the clusters ranging from 0.09 to 0.39. The two main clusters were divided into 7 subclusters, and the quinclorac resistant and susceptible populations were located randomly within each subcluster. Six out of 13 weed populations from Vietnam belonged to one cluster and a single Echinochloa species. The remaining 7 populations were identified as potentially different species in the Echinochloa genus. Nine Echinochloa populations from Vietnam were tested and identified as quinclorac resistant. The connection between quinclorac resistance levels and weed groups defined by RAPD analysis in the study is unclear; the quinclorac resistance of each resistant population could have evolved individually, regardless of differences in genetic diversity and location of the sampled populations.
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Duy Le,Chon M. Nguyen,Richard K. Mann,Carla N. Yerkes,Bobba V. N. Kumar 한국식물생명공학회 2017 JOURNAL OF PLANT BIOTECHNOLOGY Vol.44 No.4
Barnyardgrass (Echinochloa crus-galli) is one of the worst weeds in rice (Oryza sativa), but there are few reports about the genetic diversity and herbicide resistance of barnyardgrass in Vietnam. In this study, we used random amplified polymorphic DNA (RAPD) analysis and greenhouse testing to study the genetic diversity and quinclorac resistance levels of 15 Echinochloa crus-galli populations in the Mekong Delta, Vietnam, and the state of Arkansas, U.S. The quinclorac resistance of Echinochloa crus-galli populations in Vietnam was confirmed; 9 populations were resistant to quinclorac with R/S ratios ranging from 1.9 to 6.3. Six oligonucleotide primers produced a total of 55 repeatable bands of which 46 were polymorphic (83.3% average) among the 15 populations. Genetic distance was calculated, and cluster analysis separated the 15 populations into 2 main clusters with the genetic distances within the clusters ranging from 0.09 to 0.39. The two main clusters were divided into 7 subclusters, and the quinclorac resistant and susceptible populations were located randomly within each subcluster. Six out of 13 weed populations from Vietnam belonged to one cluster and a single Echinochloa species. The remaining 7 populations were identified as potentially different species in the Echinochloa genus. Nine Echinochloa populations from Vietnam were tested and identified as quinclorac resistant. The connection between quinclorac resistance levels and weed groups defined by RAPD analysis in the study is unclear; the quinclorac resistance of each resistant population could have evolved individually, regardless of differences in genetic diversity and location of the sampled populations.
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