The redmutant reached its maximum p

The red
mutant reached its maximum pigmentation within
4 weeks of incubation at 26°C yielding more
pigment at λmax 500 nm than at λmax 400 nm.
The yellow mutant could produce yellow pigment
with a single μmax of 370 nm at room temperature
but could produce yellow pigment with multi
λmax of 370, 400 and 500 nm under the RT26
and 26C temperature regimes. Mutagenesis as well
as culture temperature could thus affect the various
pigment formations of the color mutants.