Individual tree differences confound effects of growth regulators in rooting sugar maple softwood cuttings

John R. Donnelly

Treesearch

Individual tree differences confound effects of growth regulators in rooting sugar maple softwood cuttings

Informally Refereed

Authors:

John R. Donnelly

Year:

1971

Type:

Research Note

Station:

Northern Research Station

Source:

Research Note NE-129. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 6p.

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Download (PDF 252 KB): https://research.fs.usda.gov/download/treesearch/19775.pdf

Abstract

Softwood stem cuttings from three mature sugar maple trees were treated with several types and concentrations of growth regulators. Lack of statistical significance was due to extreme variability in tree response: low levels of auxin stimulated rooting in two study trees, while auxins inhibited rooting in the other tree. It is postulated that variations in rooting response may have been caused by corresponding differences in endogenous levels of naturally-occurring auxins.

Citation

Donnelly, John R. 1971. Individual tree differences confound effects of growth regulators in rooting sugar maple softwood cuttings. Research Note NE-129. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 6p.