EXPERIMENT STATION REPORT. 313 



acter, the large type of plant, is present. In a similar manner, the 

 "Magnus" carrfes a recessive character (the coarse foliage) and 

 a dominant one as to its size of plant. 



There are two types of foliage as to its color, namely, the 

 ordinary green, which seems to be a dominant character, and a 

 peculiar sickly yellow that conforms to the Mendelian law so far 

 as this type of tomato foliage has been studied by the writer. As 

 each of these antagonistic, or mutually exclusive, characters act 

 independently, it is found that when three sets are involved as 

 (i) size of plant, (2) shape of leaf and (3) color of foliage, the 

 theoretical numbers will be as follows : 



Standard, fine-leaved, green foliage, 27 



" " " yellow " 9 



" coarse-leaved, green " 9 



" " " yellow " 3 



Dwarf, fine-leaved, green " 9 



" " " yellow " 3 



" coarse-leaved, green " '. 3 



"• yellow " I 



64 



The practical test of this theoretical table in its entirety for 

 tomatoes has not been made by the writer but opportunity may 

 offer in the near future. 



Turning now to the color of the fruits there are at least three 

 una that may be considered, namely, the "red," the "pink" and 

 the "yellow," all three of which are far from true to the popular 

 names given to them, for the "red" is more orange than red, the 

 "pinks" about midway between orange and red, while the "yel- 

 lows" contain much orange, but for the present purpose they may 

 be treated as distinct colors in reference to tomatoes. 



It is found that when the "red" and "yellow" are bred together 

 the red is dominant and, as a result, the number of yellow-fruited 

 plants in the first generation after the blend approximates 25 

 per cent. The same result obtains when "pink" replaces the 

 "red" in the above cross, thus showing that the "yellow" is reces- 

 sive to both the "red" and "pink." When the "red" and "pink" 

 are bred together, the results have not been so sharply defined, 

 that is, the "red" is less evidently the dominant and with this set 

 of crosses more study is desired. 



