Data from: Fitness of crop-wild hybrid sunflowers under competitive conditions: implications for crop-to-wild introgression

Kristin L. Mercer, D. Jason Emry, Allison A. Snow, Matthew A. Kost, Brian A. Pace & Helen M. Alexander
Understanding the likelihood and extent of introgression of novel alleles in hybrid zones requires comparison of lifetime fitness of parents and hybrid progeny. However, fitness differences among cross types can vary depending on biotic conditions, thereby influencing introgression patterns. Based on past work, we predicted that increased competition would enhance introgression between cultivated and wild sunflower (Helianthus annuus) by reducing fitness advantages of wild plants. To test this prediction, we established a factorial field experiment...
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