for($row = 0; $row < $no_of_seq; $row++){
        my $sum = 0;
        for($col = 1; $col < $no_of_seq; $col++){ 
            $sum += $myArray[$row][$col];
        }
        print "$myArray[$row][0] $sum\n";
}

##</code><code>##

for my $row (@myArray) {
        my $sum = 0;
        for ($col = 1 .. $no_of_seq - 1) { 
            $sum += $row[$col];
        }
        print "$row[0] $sum\n";
}

##</code><code>##

#!/usr/bin/env perl 
use strict;
use warnings;

my @myArray;

while (<DATA>) {
    my @columns = split /\s+/, $_;
    push @myArray, \@columns;
}
my $title_row = shift @myArray;

for my $row (@myArray) {
    my $sum = 0;
    for my $col (1 .. $#$row) {
        $sum += $row->[$col];
    }
    print "$row->[0] $sum\n";
}

__DATA__
GeneID    Tp1    Tp2    Tp3        
ALA1    10    12    11        
THR8    57    99    12        
HUA4    100    177    199        
ABA5    2    5    10