Effect of cement dust pollution on the vascular cambium of Juglans regia (L.)

Abstract

Woody trees increase in girth by the activity of meristematic tissue called vascular cambium. The
vascular cambium comprises fusiform and ray initials, which give rise to vertically oriented elements
that is, vessels, fibers, tracheids etc. and horizontally oriented elements that is, rays. The present study
reveals that there is reduction in dimensions and proportions of fusiform and ray initials in Juglans
regia growing under impact of cement dust pollution.