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Evaluation of Alternaria macrospora as a Potential Biocontrol Agent for Spurred Anoda (Anoda cristata): Host Range Studies

Published online by Cambridge University Press:  12 June 2017

H. L. Walker  and
G. L. Sciumbato
H. L. Walker
Affiliation:
South. Weed Sci. Lab., Agric. Res., Sci. Ed. Admin., U.S. Dep. Agric., and Delta Branch, Mississippi Agric. and For. Exp. Stn., Stoneville, MS 38776
G. L. Sciumbato
Affiliation:
South. Weed Sci. Lab., Agric. Res., Sci. Ed. Admin., U.S. Dep. Agric., and Delta Branch, Mississippi Agric. and For. Exp. Stn., Stoneville, MS 38776
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Abstract

The host range of an isolate of the fungal pathogen Alternaria macrospora Zimmerman from infected spurred anoda [Anoda cristata (L.) Schlecht.] leaves was studied in the greenhouse and growth chamber. The fungus was inoculated to representative plants in the Malvaceae, Solanaceae, Leguminosae, and Gramineae families. Evidence of infection was limited to plants in the Malvaceae, with spurred anoda being the most susceptible species tested. Only negligible damage was incited on cotton (Gossypium hirsutum L. ‘Stoneville 213′) and long staple cotton (G. barbadense L. ‘Pima S–5′), hollyhock [Althaea rosea (L.) Cav.], okra (Hibiscus esculentus L. ‘Clemson spineless’), prickly sida (Sida spinosa L.), velvetleaf (Abutilon theophrasti Medic.), and Venice mallow (Hibiscus trionum L.). Disease symptoms induced in cotton by the spurred anoda isolate of A. macrospora were much less severe than those reported for other isolates of the fungus. Therefore, the spurred anoda isolate may be a specialized form of the fungus.

Keywords

Gossypium hirsutumbiological controlMalvaceae
Type
Research Article
Information
Weed Science , Volume 27 , Issue 6 , November 1979 , pp. 612 - 614
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

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