Resistance resources and its inheritance against to fusarium wilt in eggplants

Resistance resources and its inheritance against to Fusarium oxysporum Schlecht. f. sp. melongenae Matuo and Ishigami have been investigated on infected eggplants in the present study constituting four major steps at which 25 different eggplant having domestically and foreign origin genotypes some pure lines and wild varieties have been tested in the first step. Findings showed to resistance of wild variety, susceptibility of some pure lines and domestically and foreign origins. 15 different eggplant genotypes including wilt varieties and having domestically property and foreign origin were evaluated in the subsequent step of study. These plants were tested with twelve F. oxysporum f. sp. melongenae isolates, which are from Turkey and Italy in order to determine genotype x isolate interactions. The isolates constituting two different groups showed low virulence and high virulence, whereas the resistant genotypes were resistant to all isolates tested, the susceptible genotypes were resistant to isolates showing low virulence and were susceptible to isolates high virulence ones. In another step, the resistance inheritance was investigated by forming the reciprocal crosses between the resistant genotypes (LS 1934 and LS 2436), which belong to Solanum melongena species and susceptible pure line NSFB-99 indicating resistance appeared to be monogenic dominant. In the last step, a genetic linkage map has been constructed based on RAPD markers using F2 and BC1 progenies from a cross, which are between resistant genotype LS 2436 and a susceptible line NSFB-99 by means of H-12 primer that have been resulted in a marker distance, which is 2.6 cM to the resistant gene. KeyWords: Eggplant (Solanum melongena L.), Fusarium oxsyporum f. sp. melongenae, resistance, marker, RAPD