International Database for Barley Genes and Barley Genetic Stocks

BGS 94, Albino seedling 4, abo4

BGN  26:133
Stock number: BGS 94
Locus name: Albino seedling 4
Locus symbol: abo4

Previous nomenclature and gene symbolization:

Albino 3 = a3 (2).
Albino seedling 4 = a4 (3).


Monofactorial recessive (1, 2).
Located in chromosome 2H (1, 2); abo4.d is located 5.0 to 10.2 cM from the fch1 (chlorina seedling 1) locus (1, 2); about 12.5 cM from the abo5 (albino seedling 5) locus (1).


Seedlings lack normal pigmentation; they are white and die at a two or three leaf stage (1, 2). The abo4.d gene must be maintained as a heterozygous stock.

Origin of mutant:

A spontaneous mutant in an unknown cultivar (2).

Mutational events:

abo4.d (GSHO 167) in an unknown cultivar (1, 3).

Mutant used for description and seed stocks:

abo4.d (GSHO 167) in an unknown cultivar.


1. Hallqvist, C. 1926. Koppelungen und synthetische Lethalität bei den Chlorophyllfaktoren der Gerste. Hereditas 8:229-254.
2. Nilsson-Ehle, H. 1922. Über freie Kombination und Koppelung verschiedener hlorophyllerbeinheiten bei Gerste. Hereditas 3:191-199.
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.


J.D. Franckowiak and A. Hang. 1997. Barley Genet. Newsl. 26:133.