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The effect of select Populus clones on adult cottonwood leaf beetle feeding preferences was examined. Field-planted University of Washington poplar pedigree materials—parent clones ILL-129 (Populus delloides) and 93-968 (Populus trichocarpa), F1 clones 53-242 and 53-246, and 87 F2 selections—were used. Both field cage feeding tests with parent and F1 clones, and leaf disc feeding tests with all 91...
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