0.3 



CO 



\- 

 z 



3 



I- 

 Cl. 

 (T 

 O 

 CO 

 00 



< 



0.2 - 



0.2 



0.2 - 



TIME IN HOURS 



Fig. 4. Rates of destruction of indole-3-acelic acid by apical pea stem tissues in 

 the presence (solid lines) and absence (broken lines) of gibberellic acid in light. 

 Plants were grown in darkness (A, B) or in light (C, D, E, F). 



