EFFECT OF AMINO-OXYACETIC ACID ON COLORATION OF THE LABELLUM AND LONGEVITY OF CUT CYMBIDIUM FLOWERS
To delay coloration of the labellum induced by exogenous ethylene, a higher concentration of AOA is required.
If emasculated individual Cymbidium flowers were held in AOA solution for one week, the effect of AOA depended on the moment of emasculation: coloration of the lip was delayed if emasculation took place early, but AOA had only a slight effect if emasculation occurred later during the AOA treatment.
Branches of flowers, in order to obtain the same retarding effect on coloration of the labellum, needed a higher concentration of AOA as a pretreatment solution than individual flowers. Such high AOA concentrations may cause stem damage leading to early abscission of flowers.