Recurrent Selection Does Not Increase pathogenicity of Moestiomyces penidllariae to Trichomeless Pearl Millet

摘要

Isolates of the smut fungus Moesziomyces penidllariae (Bref.) Vanky differ in their pathogenicity to pearl millet (Wilson and Bondari 1990). The potential of M. penidllariae to adapt to pearl millet with resistance conferred by the tr allele (Wilson 1995) was evaluated. Two bulk cultures of the pathogen were established. Sori were collected from naturally infected TrTr and trtr pearl millet in the field in 1992 leliospores from 15 sori collected from either genotype were cultured on individual plates of V8~(R)-juice agar. Twelve uncontaminated cultures were bulked according to whether they were collected from TrTr or trtr plants. These bulk cultures were designated TR-0 and tr-0.