68 



MASS. EXPERIMENT STATION BULLETIN 185. 



Cross 

 No. 



Parent Varieties. 



Total 



Number of 



Progeny. 



215 



258 

 262 

 273 

 274 



Golden Carmine X Mohawk, 

 Red Valentine X Keeney Rustless, 

 Wardwell X Keeney Rustless, 

 Mohawk X Red Valentine, . 

 Red Valentine X Mohawk, . 



77 

 109 

 168 



78 

 281 



Golden Carmine is of the light mottled type, and Keeney Rustless and 

 Wardwell are mottled-eyed beans; all the others are of the common 

 dark mottled type. 



Table II. shows the results of crossing mottled and self-colored varieties. 

 In all such crosses the Fi generation has yielded only mottled beans. 

 The r2 generation has been composed of mottled and self-colored beans 

 in proportions approximating 3:1, though rather wide departures will be 

 noted. These departures are subject to the same comments as those in 

 crosses of pigmented and non-pigmented beans shown in Table I. All 

 extracted self-colored beans have bred true and mottled beans have 

 proved homozygous in mottling in some cases and heterozygous in others, 

 as shown in the table. None of the mottled varieties in this table are of 

 the light or Horticultural type. Wardwell and Keeney Rustless have 

 mottled eyes. Golden Eyed Wax has a self-colored eye, while the other 

 self-colored varieties are totally pigmented and of various colors. 



Table II. — Crosses of Mottled until Self-colored Beans. 



