Fig. 1. Ethylene sensitivity of ‘Cotton Candy’, ‘Fox’, ‘Kim’, and ‘Veronica’ geraniums. Florets were treated
with 1.0 μL·L–1 ethylene in a 24-L chamber. Controls were held in a chamber with ethylene free air. The
percentage of petal abscission was calculated after various exposure times. Each time point represents
the average percentage of abscission value for four inflorescences ± SE.