This bit is weird and suggests you don't know how lexical variables work:

my $transseqchk->{transchk}=
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And when you combine it with this, it suggests you don't fully understand the difference between hashes and hashrefs:

my %transseqchk;
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To answer the question in the title, strict refs is triggered when you try to treat a non-reference (such as a string) as a reference.

perl -E'use strict; my $x = "foo"; $$x'
perl -E'use strict; my $x = "foo"; @$x'
perl -E'use strict; my $x = "foo"; %$x'
perl -E'use strict; my $x = "foo"; &$x'
perl -E'use strict; my $x = "foo"; $x->[0]'
perl -E'use strict; my $x = "foo"; $x->{bar}'
perl -E'use strict; my $x = "foo"; $x->()'
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