A PURE-LINE METHOD IN CORN BREEDING. 



BY DR. GEORGE HARRISON SHULL 

 Cold Spring Harbor, N. Y. 



Last year I described 1 a series of experiments with Indian corn which 

 led me to the conclusions : ( I ) that in an ordinary field of corn the 

 individuals are generally very complex hybrids; (2) that the deteriora- 

 tion which takes place as a result of self-fertilization is due to the 



Composition of a Field of Maize. Report American Breeders' Association, 

 4:296-301, 1908. 



