Alien Introgression in Wheat Cytogenetics, Molecular Biology, and Genomics

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Table 1.1 List of genera and genomes in Triticeae (modifi ed from Barkworth and von Bothmer
2009 )

Genus Genomic composition

Aegilops L. B, C, D, N, M, U, X, BU, CU, CD, DN, DM, MU,

DDM, DBM, DMU

Agropyron Gaertn. P

Amblyopyrum (Jaub. & Spach) Eig T

Anthosachne Steud. StHW

Australopyrum (Tzvelev) A.Löve W

Crithopsis Jaub. & Spach K

Dasypyrum (Coss. & Durieu) T.Durand V

Douglasdeweya C.Yen, J.L.Yang,

& B.R.Baum

StP

Elymus L. St plus at least one of H, W, Y

Elytrigia* Desv. St, E, H, N

Eremium Seberg & Linde-Laursen Ns

Eremopyrum (Ledeb.) Jaub. & Spach F, Xe

Festucopsis (C.E.Hubb.) Melderis L

Henrardia C.E.Hubb. O

Heteranthelium Hochst. Q

Hordelymus (Jess.) Harz Ns

Hordeum L. H, I, Xa, Xu, HXa

Hystrix* Moench StH or Ns

Kengyilia C.Yen & J.L.Yang StPY

Leymus Hochst. Ns

Pascopyrum A.Löve St, H, N

Peridictyon Seberg, Fred. & Baden Xp

Psathyrostachys Nevski Ns

Pseudoroegneria (Nevski) A.Löve St

Roegneria* K.Koch St, Y

Secale L. R

Stenostachys Turcz. HW

Taeniatherum Nevski Ta

Thinopyrum A.Löve

incl. Psammopyrum A.Löve

E sometimes with P, St, or L

Triticum L. A, AB, AAB, ABD
Generic names marked with an asterisk were not accepted by Barkworth and von Bothmer ( 2009 )
for diverse reasons: The type species of Elytrigia and Hystrix were moved to Elymus , hence the
generic names are no longer valid following this taxonomic view. Genome designations for
Eremopyrum follow Wang et al. ( 1994 ) and Seberg and Frederiksen ( 2001 ). Leymus genome des-
ignation is given following Fan et al. ( 2014 ). The genus Roegneria was not accepted because of
e.g., a lack or morphological information needed to distinguish it from Elymus. Eremium resem-
bles Leymus genomically, and some taxa do so also morphologically. Hordelymus is widely
accepted but often included in Leymus. Löve’s ( 1984 ) usage of the ’ N ’ genome for Leymus had
been replaced by ’ Ns ’. The ‘ N ’ genome in Aegilops was designated ‘ L ’ by Löve (Yen and Yang
2009 ). All known genome combinations for Aegilops and Triticum are given only in alphabetical
order. The B genome in Aegilops might be referred to S in other treatments. The B genome in
Triticum might also be treated as the two different genomes B and G

1 Taxonomic Treatments of Triticeae and the Wheat Genus Tr it icu m