Strong resistance to the cane diseases Elsinoe veneta, Did vmella applanata and Botrvtis cinerea, and to Sphaerotheca macularis, occurred in Fi and BC, derivatives of an accession of Rubus coreanus . Resistance to cane spot (E. veneta) was polygenic .In eight out of ten BC, progenies, average grades for cane spot infections were significantly higher in white-flowered (an,) than pink-flowered (Ani) plants and in hairy-caned (H) than in glabrous (h) seedlings . It is postulated that in . R . coreanus factors controlling resistance are linked with An, and . probably, with h .Average grades for spur blight (D . applanata) were significantly higher in white-flowered plants in nine out of ten BC1 progenies . Spininess (S) was associated with greater susceptibility in six out of eight BC, families, although this difference was not statistically significant .Plants with the phenotype hAn i on average provided the best source of resistance to both cane spot and spur blight .