use strict;
use warnings;

{
    local $"  = q{;};       # locally redefine list separator
    my @gser  = 1..5;
    my $gser2 = "@gser";    # the double quotes force interoplation
    print "gser2 = $gser2\n";
}

__END__
gser2 = 1;2;3;4;5