Expt4: Duration of 1-methylcyclopropene
treatment effects. Treatment with 0.9 mLL–1
1-MCP for 5 h at 21 C on Day 0 afforded
Aphelandra squarrosa ‘Dania’ plants with
protection against serial exposures to 1 mLL–1
ethylene for up to 7 d of subsequent simulated
transport at 15 C (Fig. 4). Pre-treating plants
with 1-MCP via two EthylBloc sachets in
shipping boxes at 15 C was similarly effective
in reducing ethylene-induced leaf abscission
for the entire 7-d shipment plus 4 d of
ethylene exposure. There was no leaf abscission
from plants not exposed to ethylene (data
not shown