Anatomical Studies of the Roots of Juvenile Lodgepole Pine

Publisher Website
Google Scholar
Abstract
The entire root systems of 105 lodgepole pines (Pinus contorta var. latifolia) were excavated with a pressure sprayer. Three main root types were recognized: The radicle, primary or taproot; the lateral long-roots; and the lateral short-roots. Structural differences appeared in the stele. The tap-root was tetrarch in its proximal portion, but more distally triarch and shortly thereafter diarch; all lateral long-roots were diarch throughout; the lateral short-roots were all monarch. Lateral short-roots were restricted in growth and almost invariably formed ectotrophic mycorrhizae. These mycorrh''izae were not strictly annual structures. The former place of attachment of roots which had died and disappeared, as well as the tips of aborted long-roots, developed a typical periderm which separated the living from the dead cells.

This publication has 0 references indexed in Scilit: