R. tomentosum chromosome count tetraploid (2n = 52)
and 'P.J.M. Elite' chromosome count? ( 2n = 26?)
 tomentosum x 'P.J.M. Elite' 1 |
 tomentosum x 'P.J.M. Elite' 2 |
 tomentosum x 'P.J.M. Elite' 3 |
 tomentosum x 'P.J.M. Elite' 4 |
 tomentosum x 'P.J.M. Elite' 5 |
 tomentosum x 'P.J.M. Elite' 6 |