. Characteristics and hybridization of important intermountain shrubs. Rosacea; Shrubs Rocky Mountains Region; Shrubs Great Basin. 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 transplant
. Characteristics and hybridization of important intermountain shrubs. Rosacea; Shrubs Rocky Mountains Region; Shrubs Great Basin. 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, Figure 2.—An anteloipe bitterbrush X Stans- bury aliffrose hybrid seedling "produced by artifiaial hybridiza- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Blauer, A. Clyde; United States. Forest Service. cn. Ogden, Utah : Intermountain Forest and Range Experiment Station, Forest Service, U. S. Dept. of Agriculture
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