80 



(4) Durum group: 



{(() Excellence of gluten content for making macaroni and other pastes. 



( b) Resistance to drought. 



(r) Resistance to orange leaf rust. 



(5) Polish Wheat group: 



(«) Quality of gluten content for making macaroni. 

 {b) Resistance to drought. 



(c) Resistance to orange leaf rust. 



(6) Spelt group: 



Desirable qualities — 



(o) Ability to hold the grain in the head. 



(b) Constancy in fertility. 



(c) Hardiness of certain winter sorts. 

 Undesirable qualities — 



(d) Brittleness of head. 



(e) Ru.st liability. 



(7) Emmer group: 



Desirable qualities — 



(a) Ability to hold the grain in the head. 

 (6) Drought resistance. 



(c) Resistance to orange leaf rust. 

 Undesirable qualities — 



(rf) Brittleness of the head. 



(e) Adaptability only for spring sowing, as a rule. 



(8) Einkorn group: 



Desirable qualities — 



(a) Ability to hold the grain in the head. 

 (6) Resistance to orange leaf rust, 

 (o) Hardiness. 



(d) Resistance to drought. 



(e) Stiffness of straw. 

 Undesirable quality — 



(/) Brittleness of the head. 



13. Wheats may also be grouped geographically. On this basis 

 groups of varieties having certain special qualities are located approx- 

 imatel}^ as follows: 



(a) Starchy white wheats: Pacific Coast and Rocky Mountain States, Chile, 



Turkestan, Australia, and India. 

 {b) Amber or reddish grained wheats, also starchy: Eastern States, western 



and northern Europe, India, Japan, and Australia. 



(c) Excellence of gluten content for making the best bread: Northern and Cen- 

 tral States of the Plains, Canada, eastern and southern Russia, Hungary, Rou- 

 mania, and southern Argentina. 



(d) Resistance to orange leaf rust: Southern Russia, Mediterranean and Black 

 Sea regions, and Australia. 



(e) Excellence of gluten content for making macaroni: Southern Russia, Algeria, 

 and the Mediterranean region in general. 



(/) Stiffness of straw preventing lodging: Pacific Coast States, Japan, Turkestan, 



Mediterranean region, and Australia. 

 ig) Yielding jiower (at least in proportion to size of head): Pacific Coast States, 



Chile, and Turkestan. 

 (h) Nonshattering varieties: Pacific Coast States, Chile, Turkestan, Germany 



(spelts), and East Russia (emmers. ) 



