a flowering Induction. Readiness for flowering

you are: a flowering Induction

Some plants sensitive by the photoperiod, do not react to it in certain phases of the life cycle. sometimes, for example, that the photoperiod was effective, the plant should pass from juvenilnoj stages in a stage named ' a phase of readiness for flowering '. At many such plants the developed green cotyledons or even the first leaves are tolerant to the photoperiod whereas the subsequent leaves are already sensitive. At wood plants juvenilnaja the phase can last for years. absence of reaction here is besides caused not by absence of phytochrome as sprouts find out usual morfogeneticheskie reactions to red light; probably, other components of the reacting device are not developed. in it specifies also that fact that photoperiodic requirements for zatsvetanija can become less strict as the plant grows old.