International Database for Barley Genes and Barley Genetic Stocks

BGS 207, Albino seedling 1, abo1

BGN  26:210
Stock number: BGS 207
Locus name: Albino seedling 1
Locus symbol: abo1

Previous nomenclature and gene symbolization:

White seedling t = at (2).
Albino seedling t = at (3).


Monofactorial recessive (2).
Located in chromosome 1HL (2); abo1.a is over 22.3 cM proximal from the Blp1 (Black lemma and pericarp 1) locus (2) and is over 36.7 cM proximal from the Blp1 locus (4).


Seedlings are white in color and devoid of normal pigments (2). Plants with this phenotype die at the two or three leaf stage and are classified as albino mutants (3). The abo1.a gene must be maintained as a heterozygous stock. The albino seedling mutant (line B17) described by Daane (1) may be the same as the one studied by Robertson (2). Both are reported as originating as a selection from the cultivar Trebi made at the University of Minnesota. Although some phenotypic differences and different map positions are reported (1, 2), both authors may have studied the same mutant. The mutant studied by Daane is not present in barley collections; thus, allelism tests are not possible.

Origin of mutant:

A spontaneous mutant in Trebi (PI 537442), which was obtained from the University of Minnesota (2).

Mutational events:

abo1.a (Trebi I, GSHO 51) in Trebi (PI 537442) (2).

Mutant used for description and seed stocks:

abo1.a (GSHO 51) in Trebi.


1. Daane, A. 1931. Linkage relations in barley. Minnesota Agric. Exp. Stn. Tech Bull. 78. 30 p.
2. Robertson, D.W. 1929. Linkage studies in barley. Genetics 14:1-36.
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. Woodward, R.W. 1942. Linkage relationships between the allelomorphic series, B, Bmb, Bg, and Atat factors in barley. J. Am. Soc. Agron. 34:659-661.


T.E. Haus and T. Tsuchiya. 1971. Barley Genet. Newsl. 1:152.


J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:210.