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

use IO::All;
use Data::Dumper;

my @lines = io('in.txt')->chomp->slurp;
splice @lines, 0, 1; # remove first line

my %hash;
foreach my $line (@lines) {
    $line =~ s/^\s+//;
    my @elements = split /\s+/, $line;
    $hash{splice @elements, 0, 1} = \@elements;
}
print Dumper \%hash;

__END__

$ perl test.pl
$VAR1 = {
          'Pineapple' => [
                           '10',
                           '20',
                           '30',
                           '40'
                         ],
          'orange' => [
                        '12',
                        '25',
                        '24',
                        '29'
                      ],
          'Apple' => [
                       '40',
                       '45',
                       '50',
                       '54'
                     ]
        };