Fig. 2. Variation in coleoptile length and plant height of GA-insensitive semidwarf cultivars, GA-sensitive standard height cultivars, and GA-sensitive semidwarf lines with long coleoptiles from 3 populations. Coleoptile length of lines was determined at 11 and 15°C whereas plant height of lines was measured at maturity in a single favorable environment following a late autumn sowing.