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Biology of Host Range Testing for Biocontrol of Weeds

Published online by Cambridge University Press:  12 June 2017

Gregory J. Weidemann  and
David O. Tebeest
Gregory J. Weidemann
Affiliation:
Dep. Plant Pathol., Univ. Arkansas, Fayetteville, AR 72701
David O. Tebeest
Affiliation:
Dep. Plant Pathol., Univ. Arkansas, Fayetteville, AR 72701
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Abstract

The determination of host range is an important component in developing a plant pathogen for use as a bioherbicide. The safety of non-target economic and wild plants must be assured before experimental release and commercial use. In contrast to other methods of weed control, the genetic variability and genetic stability of both the weed and the biological control agent must be considered. Schemes to determine host range generally assume a close phylogenetic relationship between the weed host and its co-evolved pathogens. Therefore, testing generally is based on inoculation of genetically related plant species and progresses to more distantly related species until the host range is circumscribed. Several potential weaknesses in these schemes will be illustrated with examples using specific biological control agents. Future tests must place greater emphasis on testing taxa representing the full range of genetic diversity within the biogeographic area of intended use.

Keywords

Biological controlmycoherbicide
Type
Feature
Information
Weed Technology , Volume 4 , Issue 3 , September 1990 , pp. 465 - 470
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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