Table 3.

Growth Parameters of the High-Temperature Adapted Clones 27 and 97 at 42 °C Compared with the Mutant I572L and the Ancestor at 37 °C and 42 °C (values in table 1).

Strain	μ max a	τ b	Yieldc
27	0.769 (0.041)	4.7 (0.3)	2.09×107 (1.22×106)
97	0.794 (0.063)	4.7 (0.3)	1.87×107 (2.20×106)

Comparison	Significanced
27 vs. ancestor at 42 °C	0.003	0.076	0.007
97 vs. ancestor at 42 °C	0.013	0.076	0.034
27 vs. I572L at 42 °C	0.716	0.011	0.039
97 vs. I572L at 42 °C	0.651	0.011	0.302
27 vs. ancestor at 37 °C	0.801	0.049	0.011
97 vs. ancestor at 37 °C	0.613	0.049	0.040

Note.—Numbers in bold correspond to P<0.05.

^aMaximum growth rate with standard error in parenthesis.

^bDuration of the effective lag phase with standard error in parenthesis.

^cFinal yield (cells/ml) with standard error in parenthesis.

^dSignificance value from a two-sample t-test. The null hypothesis is that the means are equal.