Tilletia indica - The Food and Environment Research Agency - Defra
Tilletia indica - The Food and Environment Research Agency - Defra
Tilletia indica - The Food and Environment Research Agency - Defra
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Sample d<br />
(✔ boxes)<br />
T. horrida<br />
T. walkeri<br />
T. <strong>indica</strong><br />
Max Size (diam., µm) a Mean size (diam., µm) a<br />
36–45–50+ 24–28 30–31 35–41 Pale yellow to<br />
mostly light<br />
or dark<br />
chestnut-<br />
brown (to<br />
semi-opaque)<br />
Colour b Spines (ornamentation) in surface view b <strong>and</strong> median profile b,c<br />
Pale yellow to<br />
mostly<br />
reddishbrown<br />
(never<br />
opaque)<br />
Pale orange,<br />
but mostly<br />
dark reddish-<br />
brown to<br />
opaque black<br />
Echinulate; polygonal<br />
scales in surface view;<br />
occasionally<br />
cerebriform ridges or<br />
rarely clumps.<br />
Sharpely pointed,<br />
becoming truncate,<br />
occasionally curved<br />
Coarse; broad,<br />
incompletely cerebriform<br />
ridges (to coralloid), or<br />
thick clumps.<br />
Conical to truncate (gaps<br />
between spines obvious<br />
in profile after<br />
bleaching) c<br />
Dense; echinulate or<br />
closely spaced narrow<br />
ridges (finely cerebriform)<br />
Sharpely pointed to<br />
truncate, occasionally<br />
curved (few or no gaps<br />
between spines after<br />
bleaching) c<br />
Table 3.2. Scheme for morphologically distinguishing teliospores of <strong>Tilletia</strong> <strong>indica</strong>, T. walkeri <strong>and</strong> T. horrida detected in size-selective sieving wash<br />
tests that use 20 µm <strong>and</strong> 53 µm sieves. a Section II, Table 2.2; b Section II, Table 2.2 <strong>and</strong> Figures 2.2–2.4; c Section II, Figure 2.5;<br />
d Refer to Diagnostic Scheme in Section II (Figure 2.1) <strong>and</strong> Decision scheme (Figure 3.8).<br />
, character conforms to species