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首页> 外文期刊>Weed Research >Differential sensitivity of Atriplex patula and Chenopodium album to sugar beet herbicides: a possible cause for the upsurge of A-patula in sugar beet fields
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Differential sensitivity of Atriplex patula and Chenopodium album to sugar beet herbicides: a possible cause for the upsurge of A-patula in sugar beet fields

机译：叉料甜菜除草剂与辛博博（Chenopodium专辑）的差分敏感性：甜菜田间A-Patula升高的可能原因

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摘要

In the last decade, the prevalence of Atriplex patula as a weed in the Belgian sugar beet area has increased. Possible reasons for its expansion in sugar beet fields, besides a poor implementation of the low-dose phenmedipham/activator/soil-acting herbicide (FAR) system, might be low sensitivity or evolved resistance to one or more herbicides used in sugar beet. Dose-response pot bioassays were conducted in the glasshouse to evaluate the effectiveness of five foliar-applied sugar beet herbicides (metamitron, phenmedipham, desmedipham, ethofumesate and triallate) and three pre-plant-incorporated herbicides (metamitron, lenacil, dimethenamid-P) for controlling five Belgian A.patula populations. Local metamitron-susceptible and metamitron-resistant populations of Chenopodium album were used as reference populations. Effective dosages and resistance indices were calculated. DNA sequence analysis of the photosystem II psbA gene was performed on putative resistant A.patula populations. Overall, A.patula exhibited large intraspecific variation in herbicide sensitivity. In general, A.patula populations were less susceptible to phenmedipham, desmedipham, ethofumesate and triallate relative to C.album populations. Two A.patula populations bear the leucine-218 to valine mutation on the chloroplast psbA gene conferring low level to high level cross-resistance to the photosystem II inhibitors phenmedipham, desmedipham, metamitron and lenacil. In order to avoid insufficient A.patula control and further spread, seedlings should preferentially be treated with FAR mixtures containing higher-than-standard doses of metamitron and phenmedipham/desmedipham and no later than the cotyledon stage.
机译：在过去的十年中，Atriple Patula作为比利时甜菜区杂草的普遍性增加。除了低剂量母素/活化剂/土壤 - 作用除草剂（FAR）系统的较差的较差的实施之外，其在甜菜领域的扩张可能是低敏感性或对甜菜中使用的一种或多种除草剂的抗性。剂量反应壶生物测定在玻璃保护室中进行，评价五种叶面涂覆的甜菜除草剂的有效性（Metamitron，Phenmedipham，DesMedipham，乙食品酸盐和试验酸酯）和三种植物预掺入的除草剂（Metamitron，Lenacil，Dimethenamid-P）用于控制五个比利时A.Patula群体。局部元素 - 易感和抗参孔群的抗性和抗性群体用作参考群体。计算有效的剂量和电阻指数。在推定的A.Patula群体上进行光束II PSBA基因的DNA序列分析。总体而言，A.Patula在除草剂敏感性方面表现出大量的内部内部变化。通常，A.Patula群体易受诸如C.Album群体的Phenmedipham，DesMedipham，乙类蛋白和试验含量的敏感性。两个A.Patula群体将亮氨酸-218赋予氯化体PSBA基因的缬氨酸突变，赋予低水平的高水平交叉抑制剂Phenmedipham，DesMedipham，Metamitron和Lenacil。为了避免不足的A.Patula控制和进一步的传播，优先使用含有高于标准的Metamitron和PhenMedipham / DesMedipham的远程混合物治疗幼苗，并且不迟于子叶阶段。

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  • 来源
    《Weed Research》 |2018年第2期|共13页
  • 作者

    De Cauwer B.; Cardinael A.; Claerhout S.; Manderyck B.; Reheul D.;

  • 作者单位

    Univ Ghent Weed Sci Unit Dept Plant Prod Fac Biosci Engn Coupure Links 653 B-9000 Ghent Belgium;

    Univ Ghent Weed Sci Unit Dept Plant Prod Fac Biosci Engn Coupure Links 653 B-9000 Ghent Belgium;

    Univ Ghent Weed Sci Unit Dept Plant Prod Fac Biosci Engn Coupure Links 653 B-9000 Ghent Belgium;

    Royal Belgian Inst Beet Improvement IRBAB KBIVB Tienen Belgium;

    Univ Ghent Weed Sci Unit Dept Plant Prod Fac Biosci Engn Coupure Links 653 B-9000 Ghent Belgium;

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  • 正文语种 eng
  • 中图分类 植物保护;
  • 关键词

    FAR system; metamitron; phenmedipham; herbicide resistance; bioassay; psbA mutation;

    机译：远处系统;Metamitron;PhenMedipham;除草剂抗性;生物测定;PSBA突变;

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