The one on the right looks promising! A 4n- is a tetraploid. When crossed with a diploid will create a triploid. I believe that the problem would be with crossing a diploid with a triploid, not the tetraploid. This is what I read. Not having hands on experience, who knows. Diploids have an even number of chromosomes. Tetraploids have twice that-(4n) Triploids are (3n).
Whew! I'm all 'ploided out! Good luck! Continue to keep us posted!
