Ne2 was stated to be absent or rare in tetraploid wheats (764).
The Chinese Spring 2BS telosome carries an Ne2 allele that is not present in Chinese Spring (762).
A unknown Ne2 allele (376) is present in the hexaploid stock Harvest Queen (391) and in the tetraploid stocks Acme (376), Arnautka (376), Carleton (376), Langdon (1093), Mindum (376) and Stewart (376).
Wheat Gene Catalog Reference
Tsunewaki K (1992) Aneuploid analysis of hybrid necrosis and hybrid chlorosis in tetraploid wheats using the D genome chromosome substitution lines of durum wheat. Genome 35:594-601.
Nishikawa K et al. (1974) Mapping of progressive necrosis genes Ne1 and Ne2 of common wheat by the telocentric method. Japanese Journal of Breeding 24:277-281.
Nishikawa K (1967) Identification and distribution of necrosis and chlorosis genes in tetraploid wheat. Seiken Ziho 19:37-42.
Heyne EG et al. (1943) Complementary genes in wheat. Journal of Heredity 34:243-245.
McIntosh RA et al. (1995) Catalogue of gene symbols for wheat. Proceedings of the 8th International Wheat Genetics Symposium 1333-1500.