38 CROSSBREEDING CORN. 



do not rank in exactly the same order as the parent varieties. The 

 crosses shoAnng the greatest percentage of increase over the better 

 parent are identical with four of the highest yielding crosses. In the 

 list of poorest yielding crosses four are identical with four of the 

 crosses of the poorest jaelding female parents with Chisholm. The 

 crosses showing the greatest percentage of decrease as compared with 

 the better parent are the same as the poorest yielding crosses and, 

 with one exception, are progeny of the poorest yielding female parents. 

 In the Waco test four of the highest jdelding crosses are identical 

 with four of the crosses of the highest yielding female parents. Of 

 the crosses listed as showing the greatest percentage of increase over 

 the better parent four are identical with four of the highest yielding 

 crosses, three are progeny of three of the highest yielding female 

 parents, and two are progeny of two of the poorest yielding female 

 parents. Four of the poorest 3delding crosses are progeny of four of 

 the poorest yielding female parents. The two crosses that are less 

 productive than the better parent are both progeny of low-yielding 

 female parents. 



218 



