180 TEXTBOOK OF PLANT PHYSIOLOGY 



accompanies drouth. These characteristics are closely connected 

 with a xeromorphic structure. In selecting drouth-resistant 

 varieties attention must be paid to the size of the cells and 

 to other anatomical features, as has been pointed out long ago by 

 Kolkunov. Naturally the point in question is not the small size of 

 cells, but the physiological peculiarities connected with them. 



