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. 2015 Mar 1;46(1):67–74. doi: 10.1590/S1517-838246120131077

Table 1.

Effects of five concentrations of three surfactants (Tween20, Tween80 and Breakthru ® ) on the radial growth rate (K r ± se) of three isolates (7320, 7569 and 7771) of Beauveria bassiana.

Surfactant Surfactant concentration (%) Radial mycelial growth rate (K r in mm day −1 ) ± se

Isolates

7320 7569 7771
Tween20 0 1.08 ± 0.08 f 1.46 ± 0.06 f 1.13 ± 0.08 b
0.1 1.02 ± 0.07 def 1.17 ± 0.1 de 1.54 ± 0.3 c
0.5 0.8 ± 0.09 ab 1.22 ± 0.17 e 1.11 ± 0.09 b
1 0.9 ± 0.09 bcd 1.08 ± 0.13 cd 1.13 ± 0.09 b
5 0.8 ± 0.09 ab 0.88 ± 0.09 b 1.10 ± 0.11 b
Tween80 0 1.08 ± 0.08 f 1.46 ± 0.06 f 1.13 ± 0.08 b
0.1 0.96 ± 0.1 cdef 1.07 ± 0.13 c 1.07 ± 0.09 ab
0.5 1.04 ± 0.12 def 1.12 ± 0.07 cd 1.05 ± 0.07 ab
1 1.06 ± 0.12 ef 1.13 ± 0.1 cd 1.11 ± 0.09 a
5 0.87 ± 0.1 bc 1.12 ± 0.13 cd 0.86 ± 0.15 ab
Breakthru ® 0 1.08 ± 0.08 f 1.46 ± 0.06 f 1.13 ± 0.08 b
0.1 0.96 ± 0.12 cdef 1.26 ± 0.14 e 1.01 ± 0.09 ab
0.5 1.04 ± 0.13 def 1.11 ± 0.13 cd 0.86 ± 0.1 ab
1 0.92 ± 0.14 bcde 1.13 ± 0.13 cd 0.84 ± 0.08 ab
5 0.69 ± 0.09 a 0.72 ± 0.1 a 0.68 ± 0.06 a
F-ratio 55.28 67.15 34.23
p-value < 0.001 < 0.001 < 0.001
LSD 0.07 0.053 0.06
%CV 11.5 7 6.5
Effect ** ** **

Means followed by the same letter within the same column are not significantly different (p > 0.05); F and p values after square root-arcsine transformation;

**

Significant at p ≤ 0.001.