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首页> 外文期刊>Pest Management Science >Uptake, translocation and metabolism of aminocyclopyrachlor in prickly lettuce, rush skeletonweed and yellow starthistle
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Uptake, translocation and metabolism of aminocyclopyrachlor in prickly lettuce, rush skeletonweed and yellow starthistle

机译：莴苣，草木和黄色and虫中氨基环吡草胺的吸收，转运和代谢

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BACKGROUND: Aminocyclopyrachlor is a new herbicide proposed to control broadleaf weeds and shrubs in non-crop and rangeland systems. To gain a better understanding of observed field efficacy, the uptake and translocation of foliar-applied aminocyclopyrachlor (DPX-MAT28) and aminocyclopyrachlor methyl ester (DPX-KJM44) were evaluated in two annuals, prickly lettuce (Lactuca serriola L.) and yellow starthistle (Centaurea solstitialis L.), and one perennial, rush skeletonweed (Chondrilla juncea L). RESULTS: Absorption and translocation varied between species. While absorption of DPX-KJM44 was greater than absorption of DPX-MAT28, rush skeletonweed absorbed the most, followed by yellow starthistle and prickly lettuce. Overall, the total translocation of either herbicide was highest in yellow starthistle, followed by rush skeletonweed and prickly lettuce. Proportional herbicide movement between species was similar, with the majority translocating to developing shoots. However, in rush skeletonweed, early translocation was directed to root tissue. In rush skeletonweed, no DPX-MAT28 metabolism occurred, while DPX-KJM44 was rapidly de-esterified and translocated as DPX-MAT28. CONCLUSION: Aminocyclopyrachlor absorption and translocation are dependent on active ingredient structure and species sensitivity. Highly sensitive species such as prickly lettuce absorb and translocate less material than relatively less sensitive species such as rush skeletonweed. De-esterification of DPX-KJM44 appears to delay translocation of the resulting acid in yellow starthistle and rush skeletonweed.
机译：背景：氨基环吡草胺是一种新型除草剂，旨在控制非作物和牧场系统中的阔叶杂草和灌木。为了更好地了解已观察到的田间药效，在两年的时间里分别评估了多叶莴​​苣（莴苣（Lactuca serriola L.）和黄色start）对叶面施用的氨基环吡氯（DPX-MAT28）和氨基环吡氯甲酯（DPX-KJM44）的吸收和转运。 （Centaurea solstitialis L.）和一种多年生的草木（Chondrilla juncea L）。结果：物种之间的吸收和转运不同。虽然DPX-KJM44的吸收大于DPX-MAT28的吸收，但速生杂草吸收最多，其次是黄色的响报和多刺的生菜。总体而言，两种除草剂的总易位性在黄色的响声中最高，其次是仓草和多刺的生菜。除草剂在物种之间的比例移动是相似的，大多数移到发育中的芽上。然而，在仓草中，早期易位是针对根组织。在仓草中，没有发生DPX-MAT28代谢，而DPX-KJM44迅速去酯化并作为DPX-MAT28易位。结论：氨基环草胺的吸收和转运取决于活性成分的结构和物种的敏感性。比起相对不那么敏感的物种（如仓促草），高度敏感的物种（例如，多刺生菜）吸收和转移的材料更少。 DPX-KJM44的去酯化作用似乎延迟了黄色酸中的生成酸和匆匆草木的易位。

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