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THE WHEAT PLANT 



The following are examples of the size of the correlation coefficient 

 of a number of characters of wheat, based chiefly on data obtained from a 

 few pedigree cultures : 



SPORTS OR DISCONTINUOUS VARIATIONS 



It is a common experience of all who have made a study of pedigree 

 wheats raised from a single grain or ear of a plant that, sooner or later, 

 there appear among the progeny varieties which do not belong to the 

 fluctuations of the particular form, but differ from these in the possession 

 of one or more new characters. They are only occasionally found in the 

 small plots constituting the first or second generations of a selected ear, 

 but turn up with a considerable degree of regularity so soon as from 20 

 to 100 square yards of the pedigree culture is obtained. Such sports or 

 discontinuous variations arise suddenly, and are not connected by inter- 



