Tomato fixed lines for identifying races of the leaf mold pathogen

Abstract

Races of tomato leaf mold pathogen, Passalora fulva, are rapidly and variously developed. For race identification of the pathogen, foreign cultivars have been used, although the seeds of these cultivars are not easily available in Japan. In this study, fixed lines of tomato were bred from Japanese cultivars harboring leaf mold resistance genes, Cf-2, 4, 5 or 9. The fixed lines were inoculated with 98 isolates of known races and resistance was as expected. Seeds of the fixed lines are open to all who need them in Japan.