a stage regulated by environmental factors e.g temperature, drought
regulated by physiological factors outside of the affected structure e.g. photoperiod. One organ cues another to go dormant.
dormancy is restricted to particular organ and dependent on that specific organ to come out of it. Example: buds needing to be chilled, cannot respond to chilling of other part
apical mersitem suppressing lateral branches. Apical meristem makes other branches lateral.
lateral bud inhibited by growing shoot apix. Effect the apical meristem on a shoot has on buds on that shoot
Short day flowerers
flower initiation in late season
Long day flowerers
flower initiation in the spring.