the time between successive leaf initiation events.
The plastochron (or plastochrone) index and the leaf plastochron index are ways of measuring the age of a plant dependent on morphological traits rather than on chronological age. Use of these indices removes differences caused by germination, developmental differences and exponential growth. ==Definitions== The spatial pattern of the arrangement ...
plastochron The interval of time between consecutive formations of leaf primordia (or of pairs of such primordia) in a growing shoot apex of a plant.