Natural auxins 



§ 



f 

 t 



0-1 - 



001 



_ Conf_ro/ 



infiltrated with H2O only 



J 1 L 



Figure 3. Auxin production in mung 

 bean seedlings as a function of the 

 weight of tryptophan incorporated into 

 5 plants by vacuum infiltration. 



OS 1-0 



Trypt option infiltrated 



IS 



lug 



Figure 4. Auxin production in mung 

 bean seedlings as a function of time 

 after vacuum infiltration of 1 per cent 

 tryptophan. 



Figure 5. The in vitro conversion 

 of tryptophan to auxin {cell-free homo- 

 genates of mung bean seedlings) . 



mm 



68 



