Inoculum preparation and inoculation
techniques. Infected sorghum leaves were
collected from the field. Lesions were cut from
these leaves and placed on moist paper towels in
petri dishes for 48 hours to allow sporulation
(Carson, 1995). Single spores were picked from
the lesions and placed on potato dextrose agar
(PDA) plates and incubated at room temperature
in a dark place. Individual spores of E. turcicum
were subsequently sub-cultured to fresh PDA
plates used to inoculate autoclaved sorghum
kernels, and allowed to colonize the sorghum
kernels for about 14 days before use as source of
innoculum (Carson, 1995). The colonised
sorghum kernels were air-dried prior to field
inoculation. Inoculation was done at the five leaf
stage (Stage 2, Vanderlip, 1993) by placing 20 to
30 colonized sorghum kernels into the leaf whorls.
Inoculation was done in the evening when dew
and ambient temperature were optimal for
successful infection (Carson, 1995).
Inoculum preparation and inoculation
techniques. Infected sorghum leaves were
collected from the field. Lesions were cut from
these leaves and placed on moist paper towels in
petri dishes for 48 hours to allow sporulation
(Carson, 1995). Single spores were picked from
the lesions and placed on potato dextrose agar
(PDA) plates and incubated at room temperature
in a dark place. Individual spores of E. turcicum
were subsequently sub-cultured to fresh PDA
plates used to inoculate autoclaved sorghum
kernels, and allowed to colonize the sorghum
kernels for about 14 days before use as source of
innoculum (Carson, 1995). The colonised
sorghum kernels were air-dried prior to field
inoculation. Inoculation was done at the five leaf
stage (Stage 2, Vanderlip, 1993) by placing 20 to
30 colonized sorghum kernels into the leaf whorls.
Inoculation was done in the evening when dew
and ambient temperature were optimal for
successful infection (Carson, 1995).
การแปล กรุณารอสักครู่..