214 



Blak es lee. 



Table 1. 



seedling is not an invariable indication that it will produce yellow cones. 

 Out of 251 seedlings classified as green stemmed when planted into the 

 field, 4 later developed a slight amount of red in their stems and bore 

 purple cones. On the other hand, out of 664 plants which as seedlings 

 where recorded as having red in the stem, a single plant was later 

 found to be green stemmed and to bear yellow cones. It is thought 

 that this latter case may have been due to some error in the seedling 

 records, for it is not believed that a plant having yellow cones is ever 

 able to produce anthocyan in any of its cells. Yellow coned forms have 

 been crossed with dominant mahogany rayed type, and also with recessive 

 chocolates, but no chocolates or mahoganies with yellow cones have 

 appeared in the Fg generation from such crosses. The factors suppressing 

 red in the cone are apparently effective throughout the plant. 



