| Abstract: | The activity of IAA-oxidising enzymes from Lens roots is enhanced in vitro by dalapon (2,2-dichloropropionic acid) and perfluidone (1,1,1 -trifluoro-N-2-methyl-4-(phenylsulphonyl)phenyl]methanesulphonamide). When concentrations are greater than 10?8 M, both these herbicides act as activators. In vivo higher levels of the enzymatic activity are obtained when seed germination is carried out in the presence of 10?5 M perfluidone or 10?3 M dalapon. Gas-liquid chromatography is used for IAA determination. |
