Abstract
The morphological features of crowns were studied on the material of individuals of U. glabra of seed regeneration in the gaps of decaying three-hundred-year-old oak forests. We collected data on all crown shoots of five trees of young virginal age (from 10 to 18 years). The principal component method was used twice: first on the model tree to characterize features of the shoots biennial systems under the study, then to reveal ontogenetic and structural features of the crown organization of five virginal trees. Using the method of shoots biennial systems extraction allowed us to form a set of qualitative and quantitative characters reflecting crown structure properties of virginal trees of U. glabra, namely: properties of axes branching order, ontogenetic age of shoots in the crown, crown density, individual properties of tree crown structure.
Highlights
A tree is a modular, long-lived, slow-moving organism with a complex structure and responds to multiple environmental influences by the variability of its form
If you take into account the structural properties of the tree crown in ontogeny, you can actively influence the characteristics of trees. It is necessary for successful work in the field of forestry, arboriculture, landscaping, fruit-growing, and other areas of human economic activity connected with woody plants in one way or another
The virginal age state is characterized by a complete crown already formed
Summary
A tree is a modular, long-lived, slow-moving organism with a complex structure and responds to multiple environmental influences by the variability of its form. If you take into account the structural properties of the tree crown in ontogeny, you can actively influence the characteristics of trees. It is necessary for successful work in the field of forestry, arboriculture, landscaping, fruit-growing, and other areas of human economic activity connected with woody plants in one way or another. The virginal age state is characterized by a complete crown already formed. In this age state, woolly elm (U. glabra) already leaves the undergrowth layer and is able to enter the undergrowth layer of the stand. The work aims to identify the characters of two-year shoot systems that describe the dimensional, structural, and ontogenetic features of the crown of the virginal tree U. glabra
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
