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Home → Publications → Tree Improvement and Genetics → Northeastern Forest Tree Improvement Conference → 20th Northeastern Forest Tree Improvement Conference (1972) → Biochemical Comparisons of Extracts From Physiologically Juvenile and Mature Quaking Aspen Cuttings

Biochemical Comparisons of Extracts From Physiologically Juvenile and Mature Quaking Aspen Cuttings

Vegetative propagation is an important tool in genetic improvement of quaking aspen (Populus tremuloides Michx). Cuttings from stump sprouts or root suckers are considered physiologically juvenile and root easily (Farmer, 1963), but physiologically mature cuttings from the crown of older trees are difficult to root (Stairs and Jeffers, 1967). The purpose of our study was to compare juvenile and mature aspen cuttings with respect to certain indole and phenolic compounds which are reputed to affect the rooting process (Farmer, 1963; Basu, et al. 1969). An anatomical investigation of physiologically juvenile and mature aspen cuttings (Hicks and Gladstone, 1971) preceeded biochemical investigations. Microscopic examination revealed that reduced rooting of mature aspen cuttings was due to failure to form root primordia, a process which is apparently metabolically controlled.


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Author(s): Ray R. Hicks, Jr., Gerald R. Stairs

Publication: Tree Improvement and Genetics - Northeastern Forest Tree Improvement Conference - 1972

Section: 1