Use of chlorophyll lfuorescence and P700 absorbance to rapidly detect glyphosate resistance in goosegrass (Eleusine indica)

ZHANG Tai-jie; FENG Li; TIAN Xing-shan; YANG Cai-hong; GAO Jia-dong

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Use of chlorophyll lfuorescence and P700 absorbance to rapidly detect glyphosate resistance in goosegrass (Eleusine indica)

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The rapid detection of glyphosate resistance in goosegrass (Eleusine indica) wil enhance our ability to respond to new resistant populations of this major weed. Chlorophyl lfuorescence (Fluo) and P700 (reaction center chlorophyl of pho-tosystem I) absorbance were analyzed in one biotype of goosegrass that is resistant to glyphosate and in another that remains sensitive to the herbicide. Both biotypes were treated with a foliar spray of glyphosate. Differences in photosys-tem II maximum quantum yield (Fv/Fm), effective photochemical quantum yield (Y(II)), and non-photochemical quenching (NPQ) between the biotypes increased over time. Values for Fv/Fm and Y(II) differed between the two biotypes 24 h after treatment (HAT). Differentiated activities and energy dissipation processes of photosystem II (PSII) and energy dissipation processes of photosystem I (PSI) were manifested in the two biotypes 24 HAT with 20 mmol L–1 glyphosate. Differentiated energy dissipation processes of PSI were stil apparent 24 HAT with 200 mmol L–1 glyphosate. These results indicate that the Fluo parameters related to PSII activity and energy dissipation and the P700 parameters related to energy dissipation are suitable indicators that enable rapid detection of glyphosate resistance in goosegrass.

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《农业科学学报（英文版）》 |2015年第4期|714-723|共10页
作者
ZHANG Tai-jie; FENG Li; TIAN Xing-shan; YANG Cai-hong; GAO Jia-dong;
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Institute of Plant Protection, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, P.R.China;

Institute of Plant Protection, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, P.R.China;

Institute of Plant Protection, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, P.R.China;

Institute of Plant Protection, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, P.R.China;

Institute of Plant Protection, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, P.R.China;

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Use of chlorophyll lfuorescence and P700 absorbance to rapidly detect glyphosate resistance in goosegrass (Eleusine indica)

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