The effects of various growth regulators on Helianthus stem tissue

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
Jacqueline Hendrick Lavender (Creator)
The University of North Carolina at Greensboro (UNCG )
Web Site:
Ralph Morrison

Abstract: Various growth-regulating compounds have been tested to determine their effect on intact and excised plant tissues. Colchicine is known to induce polyploidy in plants including Musa (Vakili, 1962) and Vitis (Gargiulo, 1960). Ferry and Ward (1959) have shown that 2,4-dichlorophenoxyacetic acid (2,4-D), a plant herbicide at high concentrations, induces growth at low concentrations as shown by elongation and increase in fresh weight of sprayed stem sections in short periods of time. This growth is associated with increases in nucleic acid, protein, and ribonuclease content (Shannon, Hanson, and Wilson, 1964) and is not related to effects on respiration (Wedding and Black, 1964). Kinetin has been reported to stimulate cell division in carrot root tissues (Shantz, Mears, and Steward, 1958); however, there have been several reports, such as by Miller (1961), that the compound failed to cause division or did so only in combination with indoleacetic acid (IAA).

Additional Information

Honors Project
Language: English
Date: 1964

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