Abstract

The paradigm of plant herbivore coevolution suggests that determining the evolutionary response of plants to insect herbivory will improve our understanding of many aspects of plant and insect ecology. There are two potential evolutionary responses of plants to herbivory: resistance and tolerance. This paper examines problems inherent in measuring one factor involved in the evolution of plant resistance (the allocation cost of resistance) and then briefly considers the relationship between the evolution of tolerance and resistance in the common morning glory, Ipomoea purpurea Roth.

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