Variations in Leaf Miner and Flea Beetle Injury in Tomato Varieties1

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Abstract
As a result of a 3-fold experiment to evaluate damage by leaf miners and adult flea beetles, it was determined that the tomato (Lycopersicon esculentum) varieties Oxheart and Pearson A had the least tobacco flea beetle, Epitrix hirtipennis (Melsheimer), feeding scars and Purdue 1361 and Red Top V9 had the most. Clark''s Early Special, Rio Grande, and Pearson VF6 had the least larval mines of the leaf miner Liriomyza munda Frick, and Garden State Improved and Oxheart had the most. Varieties with genetic marker genes for joint-less pedicels had the least flea beetle feeding scars and those with xanthophyllic foliage and bushy stem had the most. Plants with the genetic marker genes for tangerine-orange flesh-colored fruit had the least leaf miner counts and narrow cotyledon and trifoliate leaved plants had the most leaf miner mine infestations. Plants in genetic markers of linkage group HI had the fewest flea beetle feeding scar counts and plants in genetic markers of VIII, I, and II had the most. Linkage groups I, n, HI, and VII had the fewest leaf miner infestations while X, VIII, and VT had the most. Leaf miner mine and flea beetle feeding scar damage per plant is proposed for tomato varieties. The data were based on an average of 1.1 cm2 and 0.8 mm2 damage to each leaf by a leaf miner larval mine and an adult flea beetle feeding scar. Proposed number of leaf mines and flea beetle feeding scars to destroy 50% of the plant was 640 leaf mines and 8000 flea beetle feeding scars for plants averaging 40 leaves per plant.

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