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

References
Colony on seed consists of small,
isolated, oval to circular spore
Conidia are crescent shaped,
usually non-septate but
M. dimerum has the following
distinguishing characteristics:
Booth, C. 1971 . The Genus
masses on the seed surface. They
occasionally have a central
a) very small crescent shaped
Fusarium. CAB, UK.
range from dull orange to bright
septum with the upper cell broader
conidia which are usually non­
orange or sometimes light pink
or have two septa. The apical cell
septate.
Booth, C. 1977. Fusarium
and are generally smooth. When
may be hooked and the basal cell
b) spore masses coalescing to
Laboratory Guide to the
the infection on the seed is
is blunt or slightly notched.
form bigger slimy conidial
Identification of the Major
severe, they coalesce to form
Conidia measure: 0 - septate, 6-11
masses.
Species. CMI , UK.
bigger slimy spore masses
x 2-3 j.Jm, 1-2 septate, 10-22 x 3-4
c) colonies with very sparse
covering the entire seed. In most
j.Jm. Conidia are hyaline when
mycelium.
Nath, R., Neergaard, P., and
cases there is little mycelium
dispersed but salmon pink in
Mathur, S.B. 1970. Identification
present, and only in the form of a
mass.
While the shape of the
of Fusarium species on seeds
few hyphal strands.
macroconidia may resemble those
as they occur in blotter test.
Proc. Int. Seed Test. Assoc. 35
(1): 121-144.
Chlamydospores are spherical or
oval, smooth-walled, 8-12 j.Jm in
diameter, and formed at intervals
along hyphae, singly or in chains.
of M. nivale, macroconidia of
M. dimerum are smaller. Further,
the colony appearance is quite
different and M. dimerum grows
Nelson, P.E., Toussoun, TA, and
more slowly than M. nivale and is
Marasas, W.F.O. 1983.
Sclerotia are also formed.
capable of producing
Fusarium Species - An
chlamydospores.
Illustrated Manual for
Perithecial state is unknown.
Identification. The Pennsylvania
State University Press, USA
and London.
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