International Database for Barley Genes and Barley Genetic Stocks

BGS 305, Cream seedling 1, crm1

BGN  26:256
Stock number: BGS 305
Locus name: Cream seedling 1
Locus symbol: crm1

Previous nomenclature and gene symbolization:

White seedling b = ab (2).
Albino seedling b = ab (3).
Cream seedling = cm (1, 4).


Monofactorial recessive (2, 3).
Located in chromosome 5HL (1); crm1.a is closely linked to the raw1 (smooth awn 1) locus (1), and is about 26.0 cM from the srh1 (short rachilla hair 1) locus (2).


Seedlings are cream in color and survive until they are about two weeks old (4). The crm1.a gene must be maintained as a heterozygous stock.

Origin of mutant:

A spontaneous mutant in Black Hulless (PI 24849) (2).

Mutational events:

crm1.a (Black Hulless III, GSHO 20) in Black Hulless (PI 24849) (2).

Mutant used for description and seed stocks:

crm1.a (GSHO 20) in Black Hulless.


1. Kramer, H.H., and B.A. Swomley Blander. 1961. Orienting linkage maps on the chromosomes of barley. Crop Sci. 1:339-342.
2. Robertson, D.W. 1933. Inheritance in barley. Genetics 18:148-158.
3. Robertson, D.W., G.A. Wiebe, and F.R. Immer. 1941. A summary of linkage studies in barley. J. Am. Soc. Agron. 33:47-64.
4. Robertson, D.W., G.A. Wiebe, R.G. Shands, and A. Hagberg. 1965. A summary of linkage studies in cultivated barley, Hordeum species: Supplement III, 1954-1963. Crop Sci. 5:33-43.


T.E. Haus and T. Tsuchiya. 1971. Barley Genet. Newsl. 1:164.
T.E. Haus. 1988. Barley Genet. Newsl. 18:83 as BGS 514, Albino seedling b, ab.


T.E. Haus. 1988. Barley Genet. Newsl. 18:81.
U. Lundqvist and J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:256.