4 6 



DAYS AFTER TREATMENT 



Fig. 1. Effect of treatment with gibberellin on the heights of tomato plants. 



a: 

 o 



; 1 1 



8 Days after treatment 



•,A Control 

 o,A GA-treated 



• Control \ 

 o GA-treated 

 A Control \ 

 A GA-treated 



60,000 lux 

 20.000 lux 



10 



2 4 6 4 8 



INTENSITY OF ILLUMINATION, LUX x 10 * DAYS AFTER TREATMENT 



Fig. 2. Photosynthetic activity of tomato plants after treatment with gibberellin. 



