Fig. 1. Frequency distributions of genotypic classes for plant height of the Kauz/MTRWA116 RIL population in four environments. A, FC01I; B, AK01D; C, FC02I; and D, FC02D. Dark gray bars represent Rht-B1a + Rht-D1a; black, Rht-B1a + Rht-D1b; light gray, Rht-B1b + Rht-D1a; and white, Rht-B1b + Rht-D1b. Approximate values of the parents are indicated. P > 0.05 indicates normality according to the Shapiro-Wilk statistic.