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	Provedor de dados Bragantia (2) Autor Picardi,Liliana (2) Altieri,Emiliano (1) Bianchi,Marta Beatríz (1) Breccia,Gabriela (1) Bulos,Mariano (1) Gil,Mercedes (1) Nestares,Graciela (1) Nestares,Graciela María (1) Ochogavía,Ana Claudia (1) Vega,Tatiana (1) Mais... Palavra-chave Herbicide resistance (2) Confocal microscopy (1) Cytochrome P450 monooxygenases (1) Helianthus annuus L (1) Helianthus annuus L. (1) Imazapyr (1) Induced male-sterility (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2020 (1) 2017 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Evidence of accelerated and altered pollen development after Imazapyr treatment in resistant sunflower Bragantia Ochogavía,Ana Claudia; Bianchi,Marta Beatríz; Picardi,Liliana; Nestares,Graciela María. ABSTRACT Imazapyr (IM) treatment applied at early reproductive developmental stages have been associated with induced male sterility in sunflower (Helianthus annuus L.). The aim of this work was to determine the effects induced by two different doses of IM-treatment (1X and 2X; 80 and 160 g a.i.·ha-1) on pollen grain yield, pollen viability and on the exine surface, in an intermediate resistant (I) and a completely resistant (R) genotype. An anatomical analysis of some stages during the microsporogenesis and microgametogenesis was also achieved by confocal microscopy. Plants of both genotypes survived the herbicide treatments and showed no external injury symptoms. Differential response to different doses of IM was obtained in R and I genotypes. The pollen... Tipo: Info:eu-repo/semantics/article Palavras-chave: Induced male-sterility; Confocal microscopy; Herbicide resistance; Helianthus annuus L. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052020000100094 Contribution of non-target-site resistance in imidazolinone-resistant Imisun sunflower Bragantia Breccia,Gabriela; Gil,Mercedes; Vega,Tatiana; Altieri,Emiliano; Bulos,Mariano; Picardi,Liliana; Nestares,Graciela. ABSTRACT The first commercial herbicide-resistant trait in sunflower (Helianthus annuus L.) is known as ‘Imisun’. Imidazolinone resistance in Imisun cultivars has been reported to be genetically controlled by a major gene (known as Imr1 or Ahasl1-1) and modifier genes. Imr1 is an allelic variant of the Ahasl1 locus that codes for the acetohydroxyacid synthase, which is the target site of these herbicides. The mechanism of resistance endowed by modifier genes has not been characterized and it could be related to non-target-site resistance. The objective of this study was to evaluate the role of cytochrome P450 monooxygenases (P450s) in Imisun resistance. The response to imazapyr herbicide in combination with P450s inhibitor malathion was evaluated in 2... Tipo: Info:eu-repo/semantics/article Palavras-chave: Helianthus annuus L.; Cytochrome P450 monooxygenases; Imazapyr; Herbicide resistance. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400536 Registros recuperados: 2 Primeira ... 1 ... Última

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