ROWS OF WHKVT FROM SELECTED HEADS 



This is the first stage in the testing of promising selections. Later they are tested in rod 

 rows and finally in plats. i,Fig. 9.) 



T.VBl.F, 1. — Results ohldiucd by selecting oats 

 for increased yield. The average yield in bushels 

 per acre for three years is presented for the variety 

 and selections. 



Gain of 



3 Year selection 



average over the 



yield variety 



Canada Cluster 56. 9 



Canada Cluster, 110-36.. 65.6 8.7 



Lincoln 53.2 



Lincoln, 100-14 57.4 4.2 



Lincoln, 109-15 58.4 5.2 



Big Pour 52.4 



Big Four, 115-27 58.3 5.9 



Big Four, 1 15-40 57.9 5.5 



Clydesdale 50,2 



Clydesdale, 1 14-2 56. 7 6.5 



Clydesdale, 1 14-4 57. 1 6 9 



Clydesdale, 114-14 57.8 7.6 



Clydesdale, 114-16 58.0 7.8 



Here it is seen that considerable in- 

 crease has been obtained by isolatinj^ 

 the higher yielding pure lines from 

 these commercial varieties. 



As stated before seed has been dis- 

 tributed to farmers and they sow jjlats 

 of the seed furnished by us and similar 

 plats from seed the>' are accustomed to 

 68 



use. From these trials reports of in- 

 creases in yield are made in a nimiber of 

 cases, some reporting a gain as high as 

 12 or more bushels of wheat over the 

 coinmon sorts of the commtmity and 

 increases as high as 20 and 25 bushels 

 of oats are reported. 



PURE LINE BREEDING 



In order to test the effect of selecting 

 the best plants from a pure line of the 

 small grains an experiment was planned 

 with oats. A pure line of oats was 

 grown on uniform soil and data were 

 taken as to height, length of head and 

 number of intcrnodes. From these 

 plants seed of certain of the tallest and 

 shortest plants were grown again on 

 uniform soil. These were again studied 

 statistically, kccjiing the oft'spring from 

 each parent plant in separate lots, thus 

 having several tall and several short 

 lines. From the tall and short lines 

 I all and short ])lants have been selected 

 and tested each year for five years. 

 In addition to selecting tall plants from 

 tall lines short jilants were also selected 



