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Registros recuperados: 13
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Avaliação das cultivares BRS Estância RR, BRS Tordilha RR e duas linhagens de soja em Sistema Tardio de Semeadura (STS). Infoteca-e
RODRIGUES, O.; TEIXEIRA, M. C. C.; BERTAGNOLLI, P. F.; COSTENARO, E. R.; PIASECKI, C..
bitstream/item/62619/1/2011comunicadotecnicoonline307.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Semeadura; Soja..
Ano: 2011 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/929909
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Caracterização e manejo de azevém (Lolium multiflorum L.) resistente a herbicidas em áreas agrícolas. Repositório Alice
VARGAS, L.; HENCKES, J. R.; SCHMITZ, M. F.; PIASECKI, C.; CECHIN, J.; TORCHELSEN, J.; AGOSTINETTO, D..
Tipo: Artigo de periódico Palavras-chave: Erva Daninha; Azevém; Weeds; Rye.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091629
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Control of Italian ryegrass and Alexandergrass in corn using different corn sowing date, pre- and post-emergent herbicides. Repositório Alice
PIASECKI, C.; OVEJERO, R. F. L.; PICOLI JUNIOR, G. J.; BELLINI, L. F.; AGOSTINETTO, D.; VARGAS, L..
Glyphosate-resistant (GR) Italian ryegrass (LOLMU) and Alexandergrass (URPLA) are troublesome weeds in corn cropping systems in Southern Brazil. The emergence pattern of those weeds is not uniform and may change according to the season?s environmental characteristics. Also, herbicide resistance has been diminishing the success of the weed control programs. The objectives of this study were to evaluate the influence of corn-sowing date on LOLMU and URPLA densities and their control provided by pre- and post-emergent herbicides. Field trials were conducted in two crop seasons in Southern Brazil consisting of three corn sowing date (August, September, and October) and the application of atrazine + S-metolachlor (residual) in corn pre-emergence in different...
Tipo: Artigo de periódico Palavras-chave: Residual; Herbicide resistance management; S-metolachlor; Atrazine; Integrated weed management.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129874
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Defenses against ROS in crops and weeds: the effects of interference and herbicides. Repositório Alice
CAVERZAN, A.; PIASECKI, C.; CHAVARRIA, G.; STEWART JR, C. N.; VARGAS, L..
Tipo: Artigo de periódico Palavras-chave: Herbicida; Erva Daninha; Herbicide resistance; Oxidative stress; Weeds; Reactive oxygen species.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113370
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Does the glyphosate treatment interfere negatively on RNA integrity in glyphosate - resistant and -sensitive Conyza bonariensis? Repositório Alice
PIASECKI, C.; BENEMANN, D.; CARVALHO, I. R.; AGOSTINETTO, D.; STEWART Jr. C. N.; VARGAS, L..
Tipo: Artigo de periódico Palavras-chave: Buva; Erva Daninha; RNA; Conyza bonariensis; Weeds; Glyphosate.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114759
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Fitness cost and competitive ability of ryegrass susceptible and with multiple resistance to Glyphosate, Iodosulfuron-methyl, and Pyroxsulam. Repositório Alice
HENCKES, J. R.; CECHIN, J.; SCHMITZ, M. F.; PIASECKI, C.; VARGAS, L.; AGOSTINETTO, D..
ABSTRACT - Ryegrass is an important weed in wheat cultivations due to the evolution of resistance to different mechanisms of action. This study aimed to compare the phenological development, fitness cost, and competitive ability between ryegrass biotypes susceptible and with multiple resistance to 5-enolpyruvylshikimate3-phosphate synthase (EPSPs) and acetolactate synthase (ALS) inhibiting herbicides. Fitness cost and phenological development were evaluated from biotypes grown in pots, and morphological growth variables were determined up to 140 days after emergence. Phenological development was evaluated with a fitness cost. Competitive ability was determined in a replacement-series experiment with proportions of resistant and susceptible ryegrass. The...
Tipo: Artigo de periódico Palavras-chave: Iodosulfuron-methyl; Pyroxsulam; Azevém; Lolium Multiflorum; Erva Daninha; Herbicida; Glyphosate.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113373
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Gene expression related to oxidative stress induced by herbicides in rice. Repositório Alice
AGOSTINETTO, D.; BENEMANN, D. P.; CECHIN, J.; NOHATTO, M. A.; LANGARO, A. C.; PIASECKI, C.; VARGAS, L..
Herbicides are stressors that can have negative effects on plants. In Oryza sativa (L.), differential gene expression may be evalu-ated through real-time reverse transcription quantitative poly-merase chain reaction (RT-qPCR). The aim of this study was to evaluate the stability of candidate reference genes and to quan-tify the relative expression of oxidative stress genes at different times (12, 24, 48, and 96 hours after treatment [HAT]) with penoxsulam, cyhalofop-butyl, and bentazon herbicides. Norm-Finder, BestKeeper, and GeNorm software and the compara-tive ∆Ct method were used to assess expression stability and to determine the RT-qPCR threshold values of the candidate reference genes. The UBQ5 gene was the most stable among the reference...
Tipo: Artigo de periódico Palavras-chave: Oryza Sativa; Rice; Gene expression; Oxidative stress; Herbicides.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1120636
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Glyphosate and saflufenacil: elucidating their combined action on the control of glyphosate-resistant conyza bonariensis. Repositório Alice
PIASECKI, C.; CARVALHO, I. R.; AVILA, L. A.; AGOSTINETTO, D.; VARGAS, L..
Synergic efects of glyphosate and saflufenacil have been reported to control Conyza spp. However, the mechanism of this synergic combination is unknown. The objectives of this study were to investigate the efects of the combination of glyphosate and saflufenacil on the control and resistance status of glyphosate-resistant (GR) C. bonariensis, as well as on oxidative stress and lipidic peroxidation. Glyphosate-resistant and glyphosate-sensitive (GS) biotypes were treated with diferent rates of saflufenacil, glyphosate, and glyphosate combined with saflufenacil. The combination of glyphosate (1480 g ae haf1) and saflufenacil (f15 g haf1) presented the best control of GR plants compared with their individual efects. It also reduced the resistance factor from...
Tipo: Artigo de periódico Palavras-chave: Reactive oxygen species (ROS); SHikimic-acid; Lipidic peroxidation; Herbicide resistance management; Herbicide synergism; Mixture of herbicides; Oxidative stress.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129872
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Glyphosate applied at the early reproductive stage impairs seed production of glyphosateresistant hairy fleabane. Repositório Alice
PIASECKI, C.; MAZON, A. S.; MONGE, A.; CAVALCANTE, J. A.; AGOSTINETTO, D.; VARGAS, L..
Tipo: Artigo de periódico Palavras-chave: Buva; Erva Daninha; Controle Integrado; Conyza bonariensis; Weeds; Integrated weed management; Glyphosate; Herbicides.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113380
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Glyphosate resistance affect the physiological quality of Conyza bonariensis seeds. Repositório Alice
PIASECKI, C.; MAZON, A. S.; AGOSTINETTO, D.; VARGAS, L..
ABSTRACT - High seed production and dispersal capacity and glyphosate resistance are among the main factors that have made hairy fleabane (Conyza bonariensis) one of the most important and dispersed weeds in the world. Herbicide-resistant weeds populations may have fitness cost due to molecular, physiological, and biochemical changes. This study aimed to evaluate the physiological quality of seeds of Conyza spp. and determine whether glyphosate resistance causes fitness costs for resistant biotypes. Seeds from six hairy fleabane biotypes, three glyphosate-resistant and three -sensitive, with a resistance factor average of 11.7 were studied. Among the studied biotypes, five were identified as C. bonariensis and one as C. blakei. Seed analyses were performed...
Tipo: Artigo de periódico Palavras-chave: Herbicida; Erva Daninha; Herbicide resistance; Integrated weed management; Weed biology; Conyza bonariensis.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115742
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Oxidative stress and differential antioxidant enzyme activity in glyphosate-resistant and -sensitive hairy fleabane in response to glyphosate treatment. Repositório Alice
PIASECKI, C.; CARVALHO, I. R.; CECHIN, J.; GOULART, F. A. P.; MAIA, L. C. da; AGOSTINETTO, D.; CAVERZAN, A.; STEWART JR, C. N.; VARGAS, L..
Tipo: Artigo de periódico Palavras-chave: Buva; Glifosato; Herbicida; Erva Daninha; Conyza bonariensis; Lipid peroxidation; Herbicide resistance; Glyphosate; Weeds.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113343
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Transcriptome analysis identifies candidate target genes involved in glyphosate-resistance mechanism in lolium multiflorum. Repositório Alice
CECHIN, J.; PIASECKI, C.; BENEMANN, D. P.; KREMER, F. S.; GALLI, V.; MAIA, L. C.; AGOSTINETTO, D.; VARGAS, L..
Italian ryegrass (Lolium multiflorum; LOLMU) is one of the most troublesome weeds in temperate regions in the world. This weed species interfere with wheat, corn, rye, and oat, causing significant crop yield losses. This species has evolved glyphosate resistance, making it difcult to control. The mechanisms of glyphosate resistance are still unknown, and an understanding thereof will favor the development of new strategies of management. The present study is the first transcriptome study in LOLMU using glyphosate-resistant and -sensitive biotypes, aiming to identify and to provide a list of the candidate target genes related to glyphosate resistance mechanism. The transcriptome was assembled de novo, producing 87,433 contigs with an N50 of 740 bp and an...
Tipo: Artigo de periódico Palavras-chave: Italian ryegrass; Next-generation sequencing; RNA-Seq; Diferential gene expression; Resistance mechanism.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129871
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Transcriptomic analysis identifies new non-target site glyphosate-resistance genes in Conyza bonariensis. Repositório Alice
PIASECKI, C.; YANG, Y.; BENEMANN, D. P.; KREMER, F. S.; GALLI, V.; MILLWOOD, R. J.; CECHIN, J.; AGOSTINETTO, D.; MAIA, L. C.; VARGAS, L.; STEWART JR, C. N..
Tipo: Artigo de periódico Palavras-chave: Buva; Erva Daninha; Herbicida; Conyza bonariensis; Glyphosate; Herbicide resistance; Weeds; Gene expression.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113359
Registros recuperados: 13
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