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Response of American Elm Seedlings to Treatment with Captan and Cycloheximide

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Seedlings of Ulmus americana L., grown in sand culture in the greenhouse, were treated twice weekly for 2 months with 600 and 1500 ppm captan and 2 and 10 ppm cycloheximide. The CO2 uptake of individual intact plants was recorded weekly by using a specially designed polyethylene photosynthesis chamber. Captan had no appreciable effect on CO2 exchange but caused a significant increase in the root growth of treated plants. Cycloheximide, although causing some initial phytotoxicity and a corresponding decline in photosynthesis, eventually effected a pronounced increase in the growth of lateral shoots.

Keywords: CO2 uptake; Dutch elm disease; Ulmus americana; photosynthesis measurement

Document Type: Journal Article

Affiliations: Research Plant Pathologist, Dept. of Plant Pathology and Physiology, Virginia Polytechnic Institute, Blacksburg

Publication date: 1969-03-01

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  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
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