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Capítulo II
concordance with its slow growth at the optimum temperature. Isolate T2 was also quite
sensitive to the higher temperature, and the remaining cultures showed growth rates double
or triple that the one of T2 at 30 ºC. At this temperature, strains 3398, T5, T8 and T9
showed growth rates significantly greater (p < 0.05) than those of the remaining strains
(Table 2).
Table 2. Average diameter of cultures and percentage of growth inhibition observed at 30 ºC in eleven
strains of Tolypocladium cylindrosporum after 21 days of growth at 22 ºC and 30 ºC.
Strain Diameter
22ºC (mm)
Diameter
30ºC (mm)
Diameter
reduction at
30ºC (%)
3398 36.5 24.8 32.1
T5 46.5 23 50.5
T8 45.6 20.8 54.4
T6 39.1 17.4 55.5
T9 44.9 19.5 56.6
11 33.3 14.1 57.7
3398M 37.1 14.9 59.8
T4 43.3 14.1 67.4
T7 47.3 12.6 73.4
T2 39.6 8.7 78.0
T1 13.9 0 100
a LSD; d.f. 1.45; 55 1.99; 55
a Least significant difference and degrees of freedom; p