224 



THE SMALL GRAINS 



and Mainstay X Squarehead (Rimpau, 1891, pp. 335- 

 371). 



237. Garten's hybrids. John Garton, of Newton-le- 

 Willows, Lincolnshire, England, has done very interesting 

 work in cereal breeding. The principle on which he 

 operates is that a variety of wheat, oats, or barley, after 



FIG. 68. U.S.C.I. wheat hybrid 155. Banat X 1409 (durum): a, fe- 

 male parent ; b, male parent ; c, first generation ; d, second genera- 

 tion. 



many years' cultivation, being close-fertilized, deteriorates 

 and needs " regenerating " by a cross within the 

 variety, in order that it may give best results. Even 

 the already well-bred oat variety Swedish Select, he has 

 thus " regenerated," and maintains that it is now yield- 

 ing much better than the parent variety. Crossing of 

 different subspecies is also practiced to obtain qualities 



