CONTROL OF XYLOGENESIS WITHIN THE WHOLE TREE
CONTROL OF XYLOGENESIS WITHIN THE WHOLE TREE
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DOI:
10.1051/forest:19890563
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发表时间:
1989-01-01
期刊:
影响因子:
--
通讯作者:
ALONI, R
中科院分区:
文献类型:
--
作者:
ALONI, R
The problems to be dealt with here concern the control of organized differentiation of the wood within a whole tree. Anatomically, the wood is the xylem and it has a different structure and composition in different parts of the tree. In mature organs, the wood is produced by a lateral meristem, the vascular cambium. The wood produced by the vascular cambium is termed secondary xylem. It is a complex tissue, comprised of several types of cells. Xylem differentiation within the plant is characterized by a high degree of order.The vascular and supporting elements, as well as the parenchymatic cells, differentiate in a predictable, three-dimensional structure, typical for each species. There-fore, a tree species can be identified sole-ly by its xylem. Xylogenesis within the whole tree is an open type of differentia-tion, which continues as long as the tree grows by apical and lateral meristems. Thus, there is a continuous development of new xylem tissues that are in a dynamic relationship with one another. This com-