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Abstract
Methods of evaluating resistance of apple fruit to 4 insect pests were established by modifying existing rearing procedures. When ‘Jonathan’ was used as the check cultivar and an adjustment was made for variation between trays among checks, it was possible to separate selections that were significantly more resistant from randomly selected samples of apple genotypes. We found 9.7 22.9, 32.3, and 17.0% of the selections tested against the codling moth, Laspeyresia pomonella (L.), plum curculio, Conotrachelus nenuphar (Herbst), apple maggot, Rhagoletis pomonella (Walsh), and redbanded leafroller, Argyrotaenia velutinana (Walker), respectively, had significantly less damage than the check.
in
HortScience