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首页> 外文期刊>RSC Advances >Uptake and distribution characteristics of the novel fungicide pyraoxystrobin in cucumber plants
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Uptake and distribution characteristics of the novel fungicide pyraoxystrobin in cucumber plants

机译：新型杀菌剂吡菌酯在黄瓜中的吸收和分布特征

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The uptake and distribution characteristics of a novel fungicide, pyraoxystrobin, labeled with ~(14) C on its pyrazol ring, were investigated in cucumber ( Cucumis sativus ) seedlings. Foliar applied pyraoxystrobin rapidly penetrated the treated leaf and reached a maximum uptake of 68% after 5 d. The translocation of absorbed ~(14) C in cucumber seedlings was both acropetal and basipetal. However, over 74% of the absorbed ~(14) C-pyraoxystrobin remained in the treated leaves. The order of its distribution in the plant was as follows: treated leaf > stalk above the treated leaf > leaves above the treated leaf > stalk below the treated leaf > leaves below the treated leaf > cotyledon > root. Seedlings grown in soils containing bound residues (BR) of pyraoxystrobin revealed that the BRs were not easily absorbed or translocated by the plant. Soil type had a large effect on root uptake, with the highest uptake among the three tested soils from red clay.
机译：在黄瓜（Cucumis sativus）幼苗中研究了新型杀菌剂吡菌酯在吡唑环上标记有〜（14）C的吸收和分布特征。叶面喷施吡菌酯迅速渗入处理过的叶片，并在5天后达到最大吸收量的68％。吸收的〜（14）C在黄瓜幼苗中的易位是顶瓣和基部。但是，超过74％的被吸收的〜（14）C-吡氧菌酯保留在处理过的叶片中。其在植物中的分布顺序如下：处理叶>处理叶上方的茎>处理叶上方的叶>处理叶下方的茎>处理叶下方的茎>子叶>根。在含有吡菌酯的结合残基（BR）的土壤中生长的幼苗表明，BR不容易被植物吸收或转移。土壤类型对根系吸收有很大影响，在三种测试的红粘土土壤中吸收率最高。

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