In potato, crosses between the tetraploid cultivated species Solanum tuberosum, and some clones of the diploid wild-type species S. phureja, constitute a method of producing maternal dihaploids.1998, C. Horlow, C. Raquin, “A Critical Analysis of Existing Haploidization Techniques”, in Y[ves] Chupeau, M[ichel] Caboche, Y[ves] Henry, editors, Androgenesis and Haploid Plants: […] In Memory of Jean-Pierre Bourgin, Berlin; Heidelberg: Springer-Verlag, →ISBN, page 14:
Etymology From Ancient Greek τετραπλός (tetraplós) + Ancient Greek είδος (eídos), equivalent to tetra- + -ploid.
1
A tetraploid cell.
2
A tetraploid organism.
The variation of caryopsis characters in species of Aegilops and wheat diploids is similar to that of wheat tetraploids .1995, Romuald Kosina, Tetraploids of the Genus Triticum in the Light of Caryopsis Structure: