摘要： [Objective] This study was to investigate the mobility of IAA-triadimenol and NAA-triadimenol in s... [Objective] This study was to investigate the mobility of IAA-triadimenol and NAA-triadimenol in soybean seedlings. [Method] Soybean seedlings were treated by spraying the solution of conjugated compounds onto their leaves; and chromatography was employed to measure the contents of IAA-triadimenol and NAA-triadimenol in different parts of these soybean seedlings, through which to represent the mobility of the conjugates. [Result] Both the triadimenol and NAA-triadimenol could not transport basipetally; whereas IAA-triademenol was ambimobile. When sprayed with 0.5 mmol/L IAA-triadimenol, as much as 1.87 μg/(g·FW) IAA-triadimenol was detected in the roots of soybean seedlings 12 h later, which was higher than that in the stem [0.68 μg/(g·FW)]; while that decreased to 0.80 μg/(g·FW) in the seedlings sprayed with 0.5 mmol/L IAA-triadimenol and the same concentration of IAA. [Conclusion] IAA moiety of the conjugate could enhance the transport and accumulation of the fungicide towards the root via the IAA carriers.显示全部
