Figure 2. — Germinated 

 seeds of antelope 

 bitterbrush. 



Viability of the seed produced from the controlled pollinations was determined by 

 placing evenly distributed seed on moistened newspapers or paper towels, which were 

 then folded in half. The folded papers were covered by plastic sheets and placed in 

 refrigerators at temperatures maintained between 1° and 4° C for 6 months. This temper- 

 ature treatment is adequate to break seed dormancy of most rosaceous shrubs (fig. 2) . 



Seedlings from sprouted seeds were transplanted to pint or quart milk cartons and 

 placed in greenhouses to develop (fig. 3) . The milk cartons had holes punched in their 

 bases to allow drainage. Plants were watered when the soil was dry. 



Seedlings of the various crosses that had been obtained since 1968 were trans- 

 planted late in May 1971, to range adaptation plots just south of Manti, Utah. 



Figure 2. — An anteloipe 

 bitterbrush X Stans- 

 bury aliffrose hybrid 

 seedling "produced by 

 artifiaial hybridiza- 

 tion. 



3 



