180 BREEDING CROP PLANTS 



the setting of viable seed is shown by the work of Connor, Ball, 

 Ten Eyck, Townsend, and Leidigh, all of whom secured viable 

 seed from panicles so protected. Leidigh (1911) credits Connor 

 with the statement that, "a particular strain of Orange sorghum 

 which he grew two generations from seed, bagged each year, 

 possessed extraordinary vitality and vigor and was remarkably 

 pure and uniform." Townsend (1909) obtained similar results. 

 From the foregoing facts it is evident that sorghums should be 

 bred as a self -fertilized crop. Bagging the panicles is a necessary 

 precaution where different lines are grown near one another. 

 By means of roguing chance mixtures and crosses are eliminated 

 and varieties are kept in a pure condition. The isolated seed 

 plot also is recommended as a correct farming practice. 



