REACTIONS OF SOLANACEOUS SPECIES TO PSEUDOCERCOSPORA-FULIGENA, THE CAUSAL AGENT OF TOMATO BLACK LEAF MOLD

A total of 137 accessions representing 26 species and five genera of s olanaceous plants were inoculated with Pseudocercospora fuligena, the causal agent of tomato black leaf mold, under controlled conditions (g rowth room) and in the field. Twenty of 26 species developed symptoms after inoculation under controlled conditions. Black nightshade (Solan um nigrum) developed symptoms when inoculated under controlled conditi ons, but not in the field. Ground cherry (Physalis sp.), five Irish po tato (Solanum tuberosum) cultivars, and eight tobacco (Nicotiana tabac um) lines remained symptomless following inoculation both under contro lled conditions and in the field. Of 40 pepper accessions representing four species of Capsicum tested under controlled conditions, 32 devel oped lesions and eight were symptomless. Of 33 eggplant (Solanum melon gena) accessions and related species representing seven Solanum spp. t ested under controlled conditions, 24 developed symptoms and nine were symptomless. Two commercial eggplant cultivars, Pingtung Long and Far mers Long, were highly susceptible under controlled conditions and in the field. Among 46 Lycopersicon accessions representing 10 species th at were evaluated, accessions of L. esculentum were the most susceptib le and accessions of L. hirsutum were the most resistant. Five Lycoper sicon spp., three Solanum spp., and four Capsicum spp. are reported as new hosts of P. fuligena.