Whitney, Kenneth D Adaptive introgression of herbivore resistance traits in the weedy sunflower Helianthus annuus. [electronic resource] - The American naturalist Jun 2006 - 794-807 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. ISSN: 1537-5323 Standard No.: 10.1086/504606 doi Subjects--Topical Terms: Adaptation, BiologicalHelianthus--geneticsHerbivoryHybridization, GeneticSelection, Genetic