The Annual Activity of Intermediary Roots of the Aleppo Pine

Author: Leshem, B.

Source: Forest Science, Volume 11, Number 3, 1 September 1965 , pp. 291-298(8)

Publisher: Society of American Foresters

Buy & download fulltext article:


Price: $29.50 plus tax (Refund Policy)


A study was made of the annual activity of intermediary roots of Pinus halepensis Mill. Roots were uncovered monthly around a few marked trees at three different groves, situated on different soils at varying heights above sea level. In the dormant root tip, metacutization was found to conform to type II of Plaut (1909). The suberized layer surrounds the initials and their immediate derivatives and unites by a bridge of suberized cells in the cortex with the secondary endodermis. When growth is resumed the cortical bridge persists and is seen as a brown band across the cortex, while the remnants of the layer which surrounds the apex are pushed to the outer boundary of the newly formed cortex. The main root activity takes place in the rainy winter and ceases in the dry summer. A pronounced resumption of root growth was observed in late summer, even though there was no rainfall. This growth ceased, and then was resumed at the onset of the winter rains. Neither a complete rest in root growth nor general activity was shown. Phenological observations show a lack of correlation between root and shoot growth. Inducing root growth by edaphic as well as other factors is discussed.

Document Type: Journal Article

Affiliations: Dept. of Plant physiology, Faculty of Agric., Hebrew Univ., Rehovot, Israel

Publication date: September 1, 1965

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
  • Membership Information
  • ingentaconnect is not responsible for the content or availability of external websites
Related content



Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page