Root Growth of Sugar Maple Seedlings in a Hydroponic System
Abstract:Sugar maple (Acer saccharum Marsh.) seedlings were grown in an irrigation-type hydroponic system to determine the effects of photoperiod (natural vs. continuous) and gibberellin (GA7) treatment (0 vs. 200 ppm) on root and shoot growth. The hydroponic system allowed for normal, well-developed root growth. Continuous light did not affect root number or growth rates. Application of GA7 to shoots reduced growth of secondary roots and number of secondary and tertiary roots, while not affecting primary root growth. Supplemental photoperiod and GA7 increased incidence of budbreak and shoot growth. Caution must be observed in using GA7 for regulating shoot growth because root growth and development can be greatly altered. Forest Sci. 26:231-237.
Document Type: Journal Article
Affiliations: Professor, Department of Forestry, Michigan State University, East Lansing, MI 48824
Publication date: June 1, 1980
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