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THE EFFECTS OF ENVIRONMENT ON WOOD FORMATION AND CAMBIAL ACTIVITY IN ROBINIA PSEUDACACIA L.
Author(s) -
WAISEL YOAV,
FAHN A.
Publication year - 1965
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1965.tb07552.x
Subject(s) - cambium , robinia , xylem , vascular cambium , photoperiodism , botany , dormancy , biology , axillary bud , horticulture , germination , tissue culture , biochemistry , in vitro
SUMMARY An investigation into the factors controlling cambial activity and wood production in Robinia pseudacacia is reported. 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 seem to participate in the control of the cambial activity of R. pseudacacia.