MadSci Network: Botany

Re: What is the vascular system of the cotton plant

Date: Thu Mar 23 14:59:59 2006
Posted By: David Hershey, Faculty, Botany, NA
Area of science: Botany
ID: 1142799608.Bt

The cotton vascular system is representative of an angiosperm vascular system.

The  conducting cells in xylem are either tracheids or vessel elements.
Gymnosperms and seedless vascular plants have mainly tracheids rather than
vessel elements. Cotton is an angiosperm or flowering plant so has mainly vessel
elements, which stack end to end to form vessels. 

The conducting cells in angiosperm phloem are sieve-tube elements, also called
sieve-tube members. In angiosperms, the sieve-tube elements are associated with
specialized parenchyma cells called companion cells. In gymnosperms, albuminous
cells occur rather than companion cells. 

There are many websites with information on xylem, phloem and vascular tissues.
There are also many plant anatomy textbooks that can be located at


Plant anatomy glossary

Plant tissues

Mitchell C. Tarczynski, David N. Byrne, and William B. Miller. 1992. High
Performance Liquid Chromatography Analysis of Carbohydrates of Cotton-Phloem Sap
and of Honeydew Produced by Bemisia tabaci Feeding on Cotton. Plant Physiol.
98(2): 753-756.


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