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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
25/04/2022 |
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Actualizado : |
25/04/2022 |
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Autor : |
KASPARY, T. E.; LAMEGO, F. P.; CUTTI, L.; AGUIAR, A. C. DE M.; RIGON, C. A. G.; BASSO, C. J. |
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Título : |
Growth, phenology, and seed viability between glyphosate-resistant and glyphosate-susceptible hairy fleabane. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Bragantia, Campinas v. 76, n. 1, p. 92-101, jan./mar. 2017. |
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Idioma : |
Inglés |
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Contenido : |
Glyphosate is the herbicide most used worldwide. In cropping systems that rely on repeated applications of glyphosate or cultivate genetically modified soyabean crop, there are numerous cases of glyphosate resistant weeds, including Conyza bonariensis. Differences among competitive ability of Conyza spp. have been found. However, little information is available on the fitness costs related to glyphosate resistance in Conyza bonariensis. We evaluated growth, phenology, and seed viability of glyphosate-resistant (GR) and glyphosate-susceptible (GS) Conyza bonariensis from Brazil, in 2012 (fall/winter) and 2013 (spring/summer). When grown alone, in pots, C. bonariensis GR biotype developed more rapidly than the GS biotype, as evidenced by their earlier bolting, flowering, and seed set. In 2012, GR biotype showed 221.9 cm of plant height compared to 181.1 cm from GS, at the flowering time. In both years, the seed production per plant was superior for GR biotype, showing germination higher than 80% against 66.5% from the GS biotype. Thus, C. bonariensis GR biotype confirmed no fitness penalty also showing characteristics that allow us to infer in superior competitive with the absence of the herbicide. It is important to point out that the biotypes evaluated here have different genetic background and the differences between them may not be fully attributed to the resistance to glyphosate. However, the GR biotype can persist in the environment and outcompete with GS biotypes regardless of further glyphosate selection of pressure. MenosGlyphosate is the herbicide most used worldwide. In cropping systems that rely on repeated applications of glyphosate or cultivate genetically modified soyabean crop, there are numerous cases of glyphosate resistant weeds, including Conyza bonariensis. Differences among competitive ability of Conyza spp. have been found. However, little information is available on the fitness costs related to glyphosate resistance in Conyza bonariensis. We evaluated growth, phenology, and seed viability of glyphosate-resistant (GR) and glyphosate-susceptible (GS) Conyza bonariensis from Brazil, in 2012 (fall/winter) and 2013 (spring/summer). When grown alone, in pots, C. bonariensis GR biotype developed more rapidly than the GS biotype, as evidenced by their earlier bolting, flowering, and seed set. In 2012, GR biotype showed 221.9 cm of plant height compared to 181.1 cm from GS, at the flowering time. In both years, the seed production per plant was superior for GR biotype, showing germination higher than 80% against 66.5% from the GS biotype. Thus, C. bonariensis GR biotype confirmed no fitness penalty also showing characteristics that allow us to infer in superior competitive with the absence of the herbicide. It is important to point out that the biotypes evaluated here have different genetic background and the differences between them may not be fully attributed to the resistance to glyphosate. However, the GR biotype can persist in the environment and outcompete with GS biotypes regard... Presentar Todo |
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Palabras claves : |
CONYZA BONARIENSIS; Dry weight; Leaf area; Plant height; Seed set. |
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Thesagro : |
Área foliar; Estatura de planta; Semente. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02349naa a2200277 a 4500
001 1063084
005 2022-04-25
008 2017 bl uuuu u00u1 u #d
100 1 $aKASPARY, T. E.
245 $aGrowth, phenology, and seed viability between glyphosate-resistant and glyphosate-susceptible hairy fleabane.$h[electronic resource]
260 $c2017
520 $aGlyphosate is the herbicide most used worldwide. In cropping systems that rely on repeated applications of glyphosate or cultivate genetically modified soyabean crop, there are numerous cases of glyphosate resistant weeds, including Conyza bonariensis. Differences among competitive ability of Conyza spp. have been found. However, little information is available on the fitness costs related to glyphosate resistance in Conyza bonariensis. We evaluated growth, phenology, and seed viability of glyphosate-resistant (GR) and glyphosate-susceptible (GS) Conyza bonariensis from Brazil, in 2012 (fall/winter) and 2013 (spring/summer). When grown alone, in pots, C. bonariensis GR biotype developed more rapidly than the GS biotype, as evidenced by their earlier bolting, flowering, and seed set. In 2012, GR biotype showed 221.9 cm of plant height compared to 181.1 cm from GS, at the flowering time. In both years, the seed production per plant was superior for GR biotype, showing germination higher than 80% against 66.5% from the GS biotype. Thus, C. bonariensis GR biotype confirmed no fitness penalty also showing characteristics that allow us to infer in superior competitive with the absence of the herbicide. It is important to point out that the biotypes evaluated here have different genetic background and the differences between them may not be fully attributed to the resistance to glyphosate. However, the GR biotype can persist in the environment and outcompete with GS biotypes regardless of further glyphosate selection of pressure.
650 $aÁrea foliar
650 $aEstatura de planta
650 $aSemente
653 $aCONYZA BONARIENSIS
653 $aDry weight
653 $aLeaf area
653 $aPlant height
653 $aSeed set
700 1 $aLAMEGO, F. P.
700 1 $aCUTTI, L.
700 1 $aAGUIAR, A. C. DE M.
700 1 $aRIGON, C. A. G.
700 1 $aBASSO, C. J.
773 $tBragantia, Campinas$gv. 76, n. 1, p. 92-101, jan./mar. 2017.
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Registro original : |
INIA La Estanzuela (LE) |
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