CHAPTER IX 



HEREDITY — II. 



ii. Quantitative Characters. 



All possible characters have been investigated quanti- 

 tatively, by the methods described in the previous 

 chapter on " Fluctuation," including flowering, boUing, 

 and shedding. 



The same difficulties already enumerated have prevented 

 conclusions from being drawn with certainty, the chief of 

 these being the scanty F3 data. On the other hand, 

 we are no longer troubled by doubts as to the nature of 

 our classification. 



Presentment of all the data, the frequency polygons, 

 correlation tables, and dissected curves, is not possible 

 here, but it should be understood that one or more forms 

 have been bred out pure in F3 to Fg for every character 

 where a factorial analysis is suggested. 



Height of stem.- — The specific nature of the length 

 of hypocotyl and first internode has already been mentioned. 

 While the strains of Sultani and " King " Uplami were 

 being grown for this purpose, a set of F2 seedlings from 

 these two parents was raised in the same site and soil. 

 Data for Fj were unfortunately not available. 



The plants were classified day by day, and the figures 



150 



