부산대학교 도서관

BC1 line Reikodai 1 go, derived from interspecific hybridization of Ficus carica and F. erecta, has resistance to Ceratocystis canker and thus is expected to be used as a new rootstock for fig trees. As a first step in elucidating the resistance mechanism, we used qPCR to quantify the density of Ceratocystis ficicola, the causal agent of Ceratocystis canker, in cuttings of Reikodai 1 go and in susceptible common fig variety Houraishi over time after needle-wound inoculation. Between 1 and 180 days after inoculation, samples were collected at the inoculation site and 2 and 4 cm above it. The amount of DNA of C. ficicola was limited in Reikodai 1 go cuttings relative to that in Houraishi. By 29 days, all Houraishi cuttings were dead, but all Reikodai 1 go cuttings were still alive after 180 days. These results indicate that the resistance of Reikodai 1 go prevents the migration and propagation of the C. ficicola pathogen.