Papers in the Biological Sciences

 

Document Type

Article

Date of this Version

11-1977

Citation

American Journal of Botany (November-Decemeber 1977) 64(10).

Comments

Copyright 1977, Botanical Society of America. Used by permission.

Abstract

lpomoea carnea (Convolvulaceae) possesses two types of extrafloral nectaries, located on the petiole and on the pedicel. These secrete a complex nectar containing sugars and amino acids. The insects attracted to the extrafloral nectaries are predominantly ants and they are relatively abundant throughout the year. A number of incidents of plant defense as a result of the presence of extrafloral nectary visitors at the extrafloral nectaries of I. carnea were observed and are consistent with the ant-guard theory of the function of extrafloral nectaries.

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