Fig. 1 Phenotypic distributions of the two backcross populations for unifoliate internode length (a), fall growth in 1995 (b) and 1996 (c), freezing injury in 1995 (d) and 1996 (e), and winter injury in 1996 (f) and 1997(g). Means for Blazer XL 17 (B17), Peruvian 13 (P13), the F₁, and the check cultivars Columbia 2000 (Col), Cuf101 (Cuf), Ranger (Ran), and Saranac (Sar) are indicated