In Fusarium section Liseola, the teleomorph is
used
to identify mating populations that represent different biological species
when
distinguishing morphological characters are absent in the anamorph. The
Gibberella fujikuroi mating populations to which strains of
Fusarium section Liseola belong were determined for
isolates from sorghum grown at Ifakara, Ilonga and Kachiri, Tanzania.
Representatives of all of the mating populations (A–F) were recovered
at
Ilonga, but C and E were absent at Ifakara and C was
absent from Kachiri. The frequency of the different mating populations
was
similar at all three sites with A (21%) and F (49%) being
the most frequent and C and E the least frequent, if they were recovered
at all.
The relative proportions of mating populations
A and F in the population were significantly different from each other
at
Ilonga, but were not significantly different at Ifakara or
Kachiri. Female fertile strains were more common within mating population
A
than within mating population F. The inbreeding
effective population sizes for the A and F mating populations, respectively,
were 69 and 91% of count based on mating type, and
88 and 53% of count based on male/hermaphrodite ratios.