NATURAL AND EXPERIMENTALLY INDUCED DISPERSION OF AGGREGATE RAYS IN SHOOTS OF QUERCUS-ITHABURENSIS DECNE AND Q-CALLIPRINOS WEBB

被引：16
作者：
LEVYYADUN, S
ALONI, R
机构：
[1] Department of Botany, The George S. Wise Faculty of Life Sciences, Tel Aviv University
来源：
ANNALS OF BOTANY | 1991年 / 68卷 / 01期
关键词：
AGGREGATE RAYS; QUERCUS-ITHABURENSIS DECNE; QUERCUS-CALLIPRINOS WEBB; RAY DIFFERENTIATION; WOOD FORMATION; XYLEM ANATOMY;
D O I：
10.1093/oxfordjournals.aob.a088223
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
There are two types of sites where aggregate rays in Quercus ithaburensis Decne. and Q. calliprinos Webb do not occur naturally in the tree: branch junctions and small ridges of wood. Partial girdling of Quercus trunks resulted in the dispersion of aggregate rays which diffused into numerous simple rays. The breakup of aggregate rays following partial girdling is not a typical wound response since wounding is known to stimulate ray enlargement. The disaggregation of the huge rays reflects changes in the relationship between axial and radial signal flows. © 1991 Annals of Botany Company.
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页码：85 / 91
页数：7
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