Aspen Bibliography

Juvenile height growth of aspen species and hybrids in southeastern Michigan

Document Type

Article

Journal/Book Title/Conference

Canadian Journal of Forest Research

Volume

14

Issue

6

First Page

959

Last Page

961

Publication Date

1984

Abstract

The possibility that in southeastern Michigan Populusgrandidentata and P. tremuloides may eventually form a hybrid swarm through their hybrid (P. × smithii) and backcrosses was studied. The competitive relationships among the taxa was examined by comparing their juvenile growth. The F1 hybrid and backcrosses to either parent grew in height nearly as well as P. tremuloides through their 2nd year from seed. Populusgrandidentata was outgrown by the hybrids and backcrosses for the 1st year but grew to approximately the same total height by the end of the second season. Seedlings of hybrids and backcrosses exhibit neither hybrid vigor nor marked growth inferiority compared with those of the parents. Growth rate is not a limiting factor to gene flow among the parent species.

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