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The basis for bentazon selectivity in navy bean, cocklebur, and black nighishade

By: Contributor(s): Material type: ArticleArticleLanguage: English Description: 23(4):272-276Subject(s): LOC classification:
  • 7964
 In: Weed Science (USA)Summary: Las hojas trifoliadas de frijol (Phaseolus vulgaris L.) blanco tolerante retuvieron menos bentazon (3-isopropil-1H-2,1,3- benzotiadiazina-(4)3H-uno 2,2 dioxido), proveniente de aplicaciones foliares, que la hoja unifoliada, o que las hojas de plantulas de cadillo (Xanthium pensylvanicum Wallr.) susceptible y las de yerbamora (Solanum nigrum L.). El C(14) proveniente del C(14) bentazon aplicado al follaje de la yerbamora se transloco a traves de toda la planta. En el cadillo, el C(14) se transloco a traves de la hoja tratada mientras que en la hoja trifoliada del frijol solo ocurrio un movimiento acropetal pequenisimo a partir del sitio de aplicacion. Sin embargo, en hojas unifoliadas de frijol blanco se observo un movimiento acropetal y basipetal del C(14), a partir de la hoja. Las especies difieren en los metabolitos del C(14) formados a partir del C(14) bentazon, 1 y 5 dias despues del tratamiento. El rapido metabolismo del bentazon en las hojas trifoliadas del frijol blanco parece estar relacionado con la tolerancia. (RA-CIAT)Summary: The trifoliate leaf of tolerant navy beans (Phaseolus vulgaris L.) retained less bentazon [3-isopropyl-1 H-2,1,3-benzothiadiazin- (4)3H-one 2.2-dioxide] from foliar applications than the unifoliate leaf, or the leaves from susceptible cocklebur (Xanthium pensylvanicum Wallr.) and moderately susceptible black nightshade (Solanum nigrum L.) seedlings. The (14)C from (14)C-bentazon applied to the foliage of black nightshade moved throughout the entire plant. In cocklebur the (14)C moved throughout the treated leaf, whereas in the trifoliate leaf of navy beans, very little acropetal movement occurred from the site of application. However, in the unifoliate leaf of navy beans, acropetal and basipetal movement of (14)C from the leaf was observed. The species differed in the (14)C-metabolites formed from (14)C-bentazon 1 and 5 days after treatment. The rapid metabolism of bentazon in the trifoliate leaf of navy beans appears to be related to tolerance. (AS)
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Journal Article Journal Article CIAT Library Document collection CINFOS Document Collection CINFOS 7964 (Browse shelf(Opens below)) c.1 Short Loan 100066554
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Las hojas trifoliadas de frijol (Phaseolus vulgaris L.) blanco tolerante retuvieron menos bentazon (3-isopropil-1H-2,1,3- benzotiadiazina-(4)3H-uno 2,2 dioxido), proveniente de aplicaciones foliares, que la hoja unifoliada, o que las hojas de plantulas de cadillo (Xanthium pensylvanicum Wallr.) susceptible y las de yerbamora (Solanum nigrum L.). El C(14) proveniente del C(14) bentazon aplicado al follaje de la yerbamora se transloco a traves de toda la planta. En el cadillo, el C(14) se transloco a traves de la hoja tratada mientras que en la hoja trifoliada del frijol solo ocurrio un movimiento acropetal pequenisimo a partir del sitio de aplicacion. Sin embargo, en hojas unifoliadas de frijol blanco se observo un movimiento acropetal y basipetal del C(14), a partir de la hoja. Las especies difieren en los metabolitos del C(14) formados a partir del C(14) bentazon, 1 y 5 dias despues del tratamiento. El rapido metabolismo del bentazon en las hojas trifoliadas del frijol blanco parece estar relacionado con la tolerancia. (RA-CIAT) spa

The trifoliate leaf of tolerant navy beans (Phaseolus vulgaris L.) retained less bentazon [3-isopropyl-1 H-2,1,3-benzothiadiazin- (4)3H-one 2.2-dioxide] from foliar applications than the unifoliate leaf, or the leaves from susceptible cocklebur (Xanthium pensylvanicum Wallr.) and moderately susceptible black nightshade (Solanum nigrum L.) seedlings. The (14)C from (14)C-bentazon applied to the foliage of black nightshade moved throughout the entire plant. In cocklebur the (14)C moved throughout the treated leaf, whereas in the trifoliate leaf of navy beans, very little acropetal movement occurred from the site of application. However, in the unifoliate leaf of navy beans, acropetal and basipetal movement of (14)C from the leaf was observed. The species differed in the (14)C-metabolites formed from (14)C-bentazon 1 and 5 days after treatment. The rapid metabolism of bentazon in the trifoliate leaf of navy beans appears to be related to tolerance. (AS) eng

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