Seed Testing of Maize and Wheat A Laboratory Guide - Search ...

References
Booth, C. 1971 . The Genus
Fusarium. CMI, UK.
Booth, C. 1977. Fusarium
Laboratory Guide to the
Identification of the Major
Species. CMI, UK.
Growth of colony on seed is rapid ,
and the white aerial mycelium is
light to dense, with orange spore
masses appearing as the culture
ages.
Microconidia are formed initially
from simple lateral conidiophores,
and later from profusely branched
conidiophores. Microconidia are
hyaline, abundant, lemon- to pearshaped
or spindle-shaped, 0-1
septate, and often have a foot cell
at the base, and measure:
oseptate 7-11 x 4-8 IJm
1 septate 10-16 x 4-6IJm.
The most distinguishing
characteristics are the abundant
microconidia that are either
lemon- to pear-shaped or broad in
the middle and narrowing towards
the ends. The shape of the
microconidia distinguishes
F. tricinctum from F. poae.
McGee, D.C. 1988. Maize
Diseases: A Reference Source
for Seed Technologists. APS
Press, USA.
Nelson, P.E., Toussoun, T.A ., and
Marasas, WF.O. 1983.
Fusarium Species - An
Illustrated Manual for
Identification. The Pennsylvania
State University Press, USA and
London.
Macroconidia are abundant,
hyaline, usually formed in pale to
orange spore masses, sickleshaped,
or more strongly curved,
with a well-marked foot cell,
3-5 septate, and measure
26-53 x 3-5 IJm.
Spherical chlamydospores (10­
12 11m) are present and formed at
intervals along hyphae, singly or
in chains.
Perithecial state is unknown.
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