WHEAT TAXONOMY

Classification of Triticum according to Morris & Sears 1967, with nomenclatural corrections

Morris & Sears (1987) [reference] revised the Bowden (1959) [reference] cytogenetically based treatment by eliminating several taxa and giving "timopheevii" species status. Kimber & Sears (1987) [reference] should be consulted for the most current version of the genomic taxonomic concept. The Morris & Sears classification is of historical significance and is presented here in its original form except for spelling and authority corrections. The currently accepted genome symbols also have been added

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Triticum L. sensu lato

1. Diploids (2n = 2x = 14)

GENOME	SPECIES
A	Triticum monococcum L.
S	Triticum speltoides (Tausch) Gren. ex K. Richter
Sb	Triticum bicorne Forsskål
Sl	Triticum longissimum (Schweinf. & Muschl. in Muschl.) Bowden
T	Triticum tripsacoides (Jaub. & Spach) Bowden
D	Triticum tauschii (Cosson) Schmalh.	[synonymous]
Sl	Triticum sharonense (Eig) Feldman & Sears
N	Triticum uniaristatum (Vis.) K.Richter
C	Triticum dichasians (Zhuk.) Bowden	[not validly published]
U	Triticum umbellulatum (Zhuk.) Bowden

2. Allopolyploid wheats (2n = 4x = 28 or 2n = 6x = 42)

GENOME	SPECIES
BA	Triticum turgidum L.
	var. dicoccoides (Körn. ex Asch. & Graebner) Bowden
	Varietal groups:
	dicoccum (based on Triticum dicoccum Schrank ex Schübler)
	durum (based on Triticum durum Desf.)
	urgidum (based on Triticum turgidum L.)
	polonicum (based on Triticum polonicum L.)
	carthlicum (based on Triticum carthlicum Nevski in Kom.)
GA	Triticum timopheevii (Zhuk.) Zhuk.
GAA	Triticum zhukovskyi Menabde & Ericzjan
BAD	Triticum aestivum L.
	Varietal groups:
	spelta (based on Triticum spelta L. and Triticum macha Dekapr. & Menabde)
	vavilovii (based on Triticum vavilovii (Tumanian) Jakubz.)
	aestivum (based on Triticum aestivum L.)
	compactum (based on Triticum compactum Host)
	sphaerococcum (based on Triticum sphaerococcum Percival)

3. Other allopolyploids (2n = 4x = 28 or 2n = 6x = 42)

GENOME	SPECIES
DN	Triticum ventricosum (Tausch) Ces., Pass. & Gilelli
DM	Triticum crassum (Boiss.) Aitch. & Hemsl.
DMM	Triticum crassum (Boiss.) Aitch. & Hemsl.
DMU	Triticum juvenale Thell.
US	Triticum kotschyi (Boiss.) Bowden	[includes T. peregrinum]
UM	Triticum ovatum (L.) Raspail	[ambiguous]
UM	Triticum triaristatum (Willd.) Godron & Gren.	[ambiguous]
UMN	Triticum triaristatum (Willd.) Godron & Gren.	[ambiguous]
UM	Triticum macrochaetum (Shuttlew. & A.Huet ex Duval-Jouve) K.Richter
UC	Triticum triunciale (L.) Raspail
CD	Triticum cylindricum (Host) Ces., Pass. & Gibelli