| The inheritance of resistance to a host-specific isolate of Alternaria alternata f sp. citri Shinn (conidia inoculation) was shown to be controlled by a single recessive allele within the citrus genome. While a backcross between Citrus reticulata Blanco 'Clementine' and LBPhytophthora palmivora and P. nicotianae chlamydospore inoculum were used to determine tolerance to Phytophthora root and stem rot in citrus and trifoliate orange hybrids. Sexual and somatic hybrids of citrus ('Ridge Pineapple', 'Gou Tou', 'Wainwright', 'Siamese sweet', 'Duncan', LB... |