期刊
TREES-STRUCTURE AND FUNCTION
卷 16, 期 4-5, 页码 338-345出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00468-002-0171-9
关键词
pneumatophores; pneumathodes; circular vessel lines; water transport
类别
We describe the secondary xylem anatomy of three types of roots produced by Laguncularia racemosa (cable roots, pneumatophores and pneumathodes). Formation of lateral roots (pneumathodes) by pneumatophores causes structural modifications in their secondary xylem, like circular vessels, which may have consequenccs for water transport. These modifications are not found in the secondary xylem of cable roots. The path followed by water in the secondary xylem of cable roots and pneumatophores was established by infusion with safranin and by mold-casting with polystyrene. Hydraulic ((k)h) and specific (k(s)) conductivity of the different root types was also determined. We found that the circular vessels at the junctions did not impair k(h) or k(s) values under well-watered conditions, but perhaps the junctions limit water loss when the air-exposed pneumatophores dry out.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据