Table I.

Effect of ethylene on petal thickness (μm)

Petal thickness was measured at the upper, middle, and bottom regions (25%, 50%, and 75% of the petal length from the top, respectively). Flowers were treated with ethylene or 1-MCP on the first day of opening duration for 24 h. Day 0, The first day of flower opening. Day 3, The third day of flower opening. Data represents means from 15 replicates ±se. Different letters in the same column indicate significant differences according to Duncan's multiple range test (P < 0.05).

Treatments	Upper (25%)	Middle (50%)	Bottom (75%)
Control (day 0)	459.2 ± 10.3 a	574.6 ± 21.4 a	820.2 ± 56.2 a
Control (day 3)	183.7 ± 26.5 b	446.8 ± 15.1 b	844.1 ± 65.8 a
Ethylene (day3)	358.2 ± 38.2 a	567.2 ± 14.3 a	886.4 ± 35.0 a
1-MCP (day 3)	113.9 ± 34.3 c	461.4 ± 10.8 b	854.1 ± 37.6 a