129 



By way of summary the present work in oat breeding in Sweden may Summary of 

 be said to be directed along the following three main lines (48, p. 258) , P resent work 



thus: inoat breed ~ 



ing. 



1 . For southern Sweden's white oat districts: 



(a) Line-breeding from the old Probstier group on a more extensive 

 scale than heretofore and 



(b) Crossing the best pure lines from the above group with each 

 other. 



* 



2. For Middle Sweden's black oat districts: 



(a) Line breeding from the common Roslag and 



(b) Crossing the best available black sorts with each other. 



3. For the later districts: Crossing the very earliest available sorts 

 with others which are higher yielding and yet tolerably early, such as Gold 

 Rain and Ligowo. 



The following table gives the average yields of the leading white and 

 black oat sorts at Svalof and Ultuna respectively, for the years indicated: 



Fig. XXXIV. Table of Yields in pounds per acre, of White Oats at Svaiaf 

 1900-1909 (22 p. 26). 



