3 2 



PLANT-BREEDING 



Before doing so, however, an historical sketch of the 

 principal methods and achievements of the most renowned 

 breeders of cereals may be given. It will facilitate our 



C 



Fig. 12. A. Bellevue de Talavera-wheat, isolated by Lie Couteur. B. 

 Bearded white wheat, produced by Patrick Shirreff. C. Squarehead 

 wheat, the most famous production of the same breeder. 



appreciation of the most essential features of the wonder- 

 ful variability of these plants, and will prepare us for an 

 unprejudiced judgment of the opposite views concerning the 



