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http://acervodigital.unesp.br/handle/11449/40068
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DC Field | Value | Language |
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dc.contributor.author | de Carvalho, Leonardo Bianco | - |
dc.contributor.author | Cruz-Hipolito, Hugo | - |
dc.contributor.author | Gonzalez-Torralva, Fidel | - |
dc.contributor.author | da Costa Aguiar Alves, Pedro Luis | - |
dc.contributor.author | Christoffoleti, Pedro Jacob | - |
dc.contributor.author | De Prado, Rafael | - |
dc.date.accessioned | 2014-05-20T15:30:45Z | - |
dc.date.accessioned | 2016-10-25T18:06:22Z | - |
dc.date.available | 2014-05-20T15:30:45Z | - |
dc.date.available | 2016-10-25T18:06:22Z | - |
dc.date.issued | 2011-04-01 | - |
dc.identifier | http://dx.doi.org/10.1614/WS-D-10-00113.1 | - |
dc.identifier.citation | Weed Science. Lawrence: Weed Sci Soc Amer, v. 59, n. 2, p. 171-176, 2011. | - |
dc.identifier.issn | 0043-1745 | - |
dc.identifier.uri | http://hdl.handle.net/11449/40068 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/40068 | - |
dc.description.abstract | Sourgrass is a perennial weed infesting annual and perennial crops in Brazil. Three biotypes (R1, R2, and R3) of sourgrass suspected to be glyphosate-resistant (R) and another one (S) from a natural area without glyphosate application, in Brazil, were tested for resistance to glyphosate based on screening, dose-response, and shikimic acid assays. Both screening and dose-response assays confirmed glyphosate resistance in the three sourgrass biotypes. Dose-response assay indicated a resistance factor of 2.3 for biotype RI and 3.9 for biotypes R2 and R3. The hypothesis of a glyphosate resistance was corroborated on the basis of shikimic acid accumulation, where the S biotype accumulated 3.3, 5.0, and 5.7 times more shikimic acid than biotypes R1, R2, and R3, respectively, 168 h after treatment with 157.50 g ae ha(-1) of glyphosate. There were no differences in contact angle of spray droplets on leaves and spray retention, indicating that differential capture of herbicide by leaves was not responsible for resistance in these biotypes. The results confirmed resistance of sourgrass to glyphosate in Brazil. | en |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | - |
dc.description.sponsorship | MICINN (Spain) | - |
dc.format.extent | 171-176 | - |
dc.language.iso | eng | - |
dc.publisher | Weed Sci Soc Amer | - |
dc.source | Web of Science | - |
dc.subject | Herbicide resistance | en |
dc.subject | shikimic acid | en |
dc.subject | spray retention | en |
dc.subject | contact angle | en |
dc.title | Detection of Sourgrass (Digitaria insularis) Biotypes Resistant to Glyphosate in Brazil | en |
dc.type | outro | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.contributor.institution | Univ Cordoba | - |
dc.contributor.institution | Universidade de São Paulo (USP) | - |
dc.description.affiliation | São Paulo State Univ, Dept Appl Biol Agropecuary, BR-14884900 São Paulo, Brazil | - |
dc.description.affiliation | Univ Cordoba, Dept Agr Chem & Edaphol, E-14071 Cordoba, Spain | - |
dc.description.affiliation | Univ São Paulo, Dept Crop Sci, BR-13418900 São Paulo, Brazil | - |
dc.description.affiliationUnesp | São Paulo State Univ, Dept Appl Biol Agropecuary, BR-14884900 São Paulo, Brazil | - |
dc.description.sponsorshipId | CNPq: 201417/2009-0 | - |
dc.description.sponsorshipId | MICINN (Spain): AGL2007-60771 | - |
dc.identifier.doi | 10.1614/WS-D-10-00113.1 | - |
dc.identifier.wos | WOS:000289808400005 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Weed Science | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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