ISHS Acta Horticulturae 682: V International Postharvest Symposium
RESPONSE OF LILIUM SP. ´STARGARZER´ TO EXOGENOUS ETHYLENE DURING POSTHARVEST |
| Authors: | M. Persico, C. Krarup, E. Olate |
| Keywords: | 2-chloroethyl-phosphonic acid, ethylene sensitivity, postharvest Lilium sp., easter Lilium sp., chlorosis, lifespan, vase life |
| Abstract:
There are variable reports with regard to the sensitivity of Lilium sp. to exogenous ethylene. According to some studies, the different types of Lilium sp. are sensitive to ethylene; however, the eastern type of Lilium sp. has been shown to have low sensitivity to ethylene. The objective of this research was to determine the eventual sensitivity of Lilium sp. ‘Stargazer’ to exogenous ethylene that could be present during the commercial postharvest period. For this purpose, an experiment with five treatments (ethylene concentrations of 0, 1, 10, 100, 1000 ppm) and six replications (floral spikes with unopened flowers), in a completely randomized block design was established. Ethylene was applied by spraying the spikes with an aqueous solution of 2-chloroethyl-phosphonic acid. Parameters measured were duration of the shiny green colour of the leaves, days to first flower to attain the fully opened stage and postharvest lifespan of the spikes. Results showed no significant differences between treatments for leaf colour or in days for the first flower to attain the fully opened stage. However, the lifespan of spikes is significantly reduced with ethylene concentrations of 100 and 1000 ppm. Such high concentrations are unlikely to occur and Lilium sp. ‘Stargazer’ should be considered for all practical purposes as a product that will not be affected by ethylene during postharvest. | |
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