| 苦槛蓝对菜青虫的生物活性及生理效应的研究 |
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| 引用本文： | 朝美英,AliAl-Bashari,钟国华,赵善欢.苦槛蓝对菜青虫的生物活性及生理效应的研究[J].植物保护学报,1999,26(3):265-270. |
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| 作者姓名： | 朝美英 AliAl-Bashari 钟国华 赵善欢 |
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| 作者单位： | [1]中国农业大学植物病理系 [2]黑龙江省植检植保站 |
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| 基金项目： | 中国科学院封丘农业生态开放实验站基金(961601) |
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| 摘 要： | 应用同位素示踪技术研究了＾１４Ｃ－三唑酮在小麦２－３叶期幼苗上的吸收分布和影响因素。结果表明，根部给药后２－２１６ｈ小麦幼苗根部放射性和相对强度由５４．０％下降为２１．７％；在幼苗残存种子上的放射性相对强度由３７．５％上升为５６．６％，＾１４Ｃ－三唑同传导速度很快，在叶片中的积累与根部给药时间呈正相关，由８．５％上升为２１．７％。
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| 关 键 词： | 三唑酮 小麦幼苗 内吸传导 影响因素 小麦 |
STUDIES ON THE BIOACTIVITY AND PHYSIOLOGICAL REACTION OF THE EXTRACTS FROM MYOPORUM BONTIOIDES AGAINST PIERIS RAPAE |
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| Hu Meiying,Ali AI-Bashari,Zhong Guohua and Chiu Shin-Foon.STUDIES ON THE BIOACTIVITY AND PHYSIOLOGICAL REACTION OF THE EXTRACTS FROM MYOPORUM BONTIOIDES AGAINST PIERIS RAPAE[J].Acta Phytophylacica Sinica,1999,26(3):265-270. |
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| Authors: | Hu Meiying Ali AI-Bashari Zhong Guohua and Chiu Shin-Foon |
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| Institution: | Laboratory of Insect Toxicology, South China Agricultural University, Guangzhou 510642,Laboratory of Insect Toxicology, South China Agricultural University, Guangzhou 510642,Laboratory of Insect Toxicology, South China Agricultural University, Guangzhou 510642 and Laboratory of Insect Toxicology, South China Agricultural University, Guangzhou 510642 |
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| Abstract: | Uptake and distribution of 14C-triadimefon in wheat seedling of 2 - 3 leaf-stage and the related interfering factors were studied by means of radioactive isotope tracer. The results showed that the radioactivity in the treated root dropped from 54. 0% to 21. 7% after 2 - 216 h treatment by rootdipping in 14C-labeled tridimefon solution. The radioactivity in the sprouted seed of treated seedling increased from 37. 5% to 56. 6%. "C-triadimefon was translocated apoplasticaly with a high speed, and the accumulation of radioactivity in the leaves increased from 8. 5% to 21. 7% positively correlated with the duration of treatment. Autoradiograph experiment showed that 14C-triadimefon could be absorbed and distributed in whole seedling 144 h after root treatment. This kind of uptake is considered as a physical process of passive diffusion without the joint-action of membrane-protein and ATPase. Sucrose, leucine, lysine, and glutamic acid showed no effect on uptake of 14C-triadimefon. An environment of pH 3 -7 is favourable for l4C-triadimefon absorption while inhibition occurred above pH 8. |
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| Keywords: | 14C-triadimefon wheat seedling uptake and distribution interfering factors |
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