A high rate of ethylene production was observed in buds and young flowers of
Aranda orchid, which increased with bud growth, reaching a high value in half-opened flower. This was followed by a gradual decline but it increased again when the flowers showed sign of senescence. Aminooxylacetic acid (AOA) inhibited ethylene production and bud expansion of
Aranda buds.
Key words Orchid flowers and buds - ethylene production