1352 



INDUCTION PHENOMENA 



CHAP. 33 



visible at 30 kliix (3.7 and 6.0 minutes after the beginning of illumination, 

 respectively; the first inhibition wave had its peak at 1.8 minutes). The 



to 



g, 



O 



I 



8"* 



Time 



8 mm. 



Fig. 33.13F. CO2 induction curves of Holcus lanatus in light of different 

 intensity; diaferometer record (after van der Veen 1949^). 



«0 



vj 



Time 



6 mm. 



Fig. 33.13G. CO2 induction curves of Holcus lanatus after different 

 dark periods (20° C, 3% CO. in air): (— ) 1 min. dark; (- -) 3 min. dark; 

 (- -) 6 min. dark (after van der Veen 1949^). Diaferometer record. 



