174 



Plant Tissue Culture 



16 



14 



o = Control with yeast 

 - A=5-amino-acid mixture 

 » = Control wi hout yeast 



< 



Q 



<r 

 u 

 o. 



u 



3 



D 

 O 



a: 



u 

 a. 



PASSAGES 

 ! I 2 





b 10 15 



DAYS 

 Fig. 45. A line graph recording the average daily increment 

 rates of three series of cultures, 20 roots in each series, maintained 

 for 14 days (two passages), each in a different nutrient. 



