Whole leaf fluorescence as a quantitative probe of detoxification of the herbicide chlortoluron in wheat |
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Authors: | Cadahia Estrella Ducruet Jean-Marc Gaillardon Paul |
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Institution: | 1. Laboratoire des Herbicides, INRA, BV 1540, 21034 Dijon Cédex, France;2. Laboratorio de Malherbologia, INIA, Departamento Proteccion vegetal, Carretera de la Coruna, Km 7, Madrid 3, Spain |
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Abstract: | Six varieties of wheat, tolerant or susceptible towards chlortoluron, a photosynthesis-inhibiting herbicide, were submitted to a 24-hour herbicide treatment. Fluorescence induc tion kinetics of whole leaves were recorded during the six following days. Recovery of photosynthetic electron transfer was found in tolerant varieties only. Ratios of I and P levels of induction kinetics appeared as the most reliable parameter for quantitative evaluation of detoxification rates. |
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