... al. , 2 010 ; Testolin et al. , 20 01; X.G. Xiao et al. , 19 99), random amplified polymorphic DNAs (RAPDs) (Gill et al. , 19 98; H.W. Huang et al. , 2002a; Shirkot et al. , 2002), SSRs (Fraser et al. , ... Actinidia was a consequence of sex-determining genes localized on a pair of chromosomes that function like an XX/XY system (Gill et al. , 19 98; Harvey et al. , 19 97; Testolin et al. , 19 95). Although ... A. chinensis callus formation using A. tumefaciens A2 81, GV 310 1, EHA105 and LBA4404, all harbouring the pART27 -10 binary vector, revealed that 27% of leaf strips produced calli using A2 81, compared...