Metabolism and mode of action 



lAA 



lAAm I 120 



IAN 



lAMe no 



Figure 1. Histograms showing the activities 

 of indole-3-acetic acid, -acetamide, -acetonitrile, 

 and methyl ester in the wheat cylinder test. 



0O1 0-1 1 10 

 p.p.Ta. — *- 



^•/p.p.Tn. 



/p.p.Tn. 



/^p.p.7a. 



JAA 



lAAm 



IAN 



lAMe 



Figure 2. The activities of indole-'i-acetic acid, -acetamide, and -acetonitrile and the methyl ester of 

 tndole-3-acetic acid in the pea curvature test. 



236 



