Ethylene during flowering and fruit ripening
Laser photoacoustic spectroscopy was used to continuously quantify the ethylene that is produced by strawberry flowers and fruit while they developed in planta.
Ethylene was first detected as flower buds opened and exhibited diurnal oscillations with peak production prior to petal abscission. After that C2H4 production fells to a low and relatively continuous level until fruit had entered the latter stages of being non-expanded and dark-green. Once fruit initiated red coloration, C2H4 release becomes elevated in a linear fashion (without diurnal fluctuations).