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Resistance to Leaf Miners in Lycopersicon Accessions1


When cultivars and accessions of the cultivated tomato, Lycopersicon esculentum Mill., and related species, were evaluated for resistance to a leaf miner, Liriomyza munda Frick, in greenhouse and field cage tests, the screening tests revealed several lines of L. esculentum having genes for adult nonpreference or larval antibiosis or both. All accessions of L. hirsutum Humb. & Bonpl. and L. hirsutum f. glabratum C. H. Mull, were virtually immune to attack in both greenhouse and field tests. Lycopersicon pimpinellifolium (Jusl.) Mill, demonstrated a considerable level of antibiosis in the greenhouse, but was not promising in the field. All accessions of L. peruvianum var. dentatum Dun. and L. glandulosum C. H. Mull, tested were susceptible. The commercial cv. VF 145B was nonpreferred in the field.