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Answer» Factors controlling cambial activity: - The effects of temperature on the activity of the cambium are of prime importance. At relatively high temperatures the cambium is active, while at low temperatures dormancy is induced.
- Changes in photoperiod seem to affect the type of wood produced more than the activity of the cambium. Under long day conditions, xylem elements of the early wood type are formed, while under short day conditions the xylem produced is of the late wood type. Photoperiod affects cambial activity and the type of its derivatives through its control of the buds.
- Under high temperature and short day conditions, axillary buds have been found to sprout occasionally. Below these buds the wood produced is of the early type. Inhibitors produced by the leaves and retained in the stems.
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