POLYPLOID SERIES 



151 



number of cases. Of these, T. monococcuin, has the fewest 

 chromosomes, viz., 14 (n=7). It belongs to the Einkorn 

 group and can be traced back, according to Percival 



d 



f 



'Aiv. 



h 



Fig. 88. 



Eeduced number of chromosomes of diploid, tetraploid, and hexa- 

 ploid wheats. (After Kihara.) 



