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Home → Publications → Tree Improvement and Genetics → Central States Forest Tree Improvement Conference → 9th Central States Forest Tree Improvement Conference (1974) → Differences in Applied Auxin Transport and Metabolism Related to Rooting of Black Walnut Cuttings

Differences in Applied Auxin Transport and Metabolism Related to Rooting of Black Walnut Cuttings

Indolebutyric acid labeled with tritium (IBA 3H) was transported from the base of cuttings from visible bud shoots more rapidly than from cuttings from adventitious shoots, and chromatograms showed that quantities and, probably, the kind of metabolites differed from those in adventitious cuttings. After cuttings were treated 60 hours with IBA 3H, 53.3 percent of the radioactivity in adventitious cuttings was in their indoleacetic acid (IAA) zones and 46.5 percent in their indolebutyric acid (IBA) zones, while respective percentages from visible bud cuttings were 46 and 53.8. That finding suggests that the plant, before using IBA may change it to IAA. This study was conducted to gain insight into the physiology of root initiation in black walnut cuttings from shoots of visible and adventitious origin.


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Author(s): Loy W. Shreve, Neil W. Miles, Jerry S. Weis

Publication: Tree Improvement and Genetics - Central States Forest Tree Improvement Conference - 1974