Physiology of the cambium and other secondary meristems of the shoot
Abstract
Any cell which resumes meristematic activity after having attained a distinct degree of maturity is, strictly speaking, a secondary meristem. According to this definition, a multitude of structures would belong to this group, for example calluses and many tissue cultures, tumors induced by growth substances and other agents, numerous regeneration phenomena following wounding or experimental operations, etc. However, this chapter will be limited to those secondary meristems which are formed in the course of the normal development of numerous plants, that is the vascular cambium, the cork cambium or phellogen, and the dilation growth in the outer tissues of the stem which accompanies the growth in thickness in many plants. The other cases of secondary meristematic activity will be treated in the appropriate chapters of this and other volumes of this encyclopedia. It is also perhaps useful to remind the reader that, this entire section of the present volume dealing with the physiology of shoot development, our discussion is essentially limited to the cambia of the shoot. The formation and functioning of the vascular cambium of the root is treated elsewhere in this volume1.
Keywords
Growth Hormone Radial Growth Growth Ring Cambial Activity Vascular CambiumPreview
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Literature
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