International Database for Barley Genes and Barley Genetic Stocks

BGS 478, Laxatum-g, lax-g

BGN  47:140
Stock number: BGS 478
Locus name: Laxatum-g
Locus symbol: lax-g

Previous nomenclature and gene symbolization:

Laxatum-25 = lax-25 (3, 4).


Monofactorial incomplete dominant (5).
Location is unknown.


Rachis internodes of lax-g.25 were about 8% longer than those of Bonus; and mutant plants exhibited tip sterility and reduced tiller numbers (4).
No images

Origin of mutant:

An X-ray induced mutant in Bonus (NGB 14657, PI 189763) (4, 6).

Mutational events:

lax-g.25 (NGB 116360), -g.59 (NGB 116393), in Bonus (NGB 14657, PI 189763) (1, 2, 5, 6, 7).

Mutant used for description and seed stocks:

lax-g.25 (NGB 116360) in Bonus.


1. Ehrenberg, L., Å. Gustafsson, and U. Lundqvist. 1959. The mutagenic effects of ionizing radiations and reactive ethylene derivatives in barley. Hereditas 45:351-368.
2. Ehrenberg, L., Å. Gustafsson, and U. Lundqvist. 1961. Viable mutants induced in barley by ionizing radiations and chemical mutagens. Hereditas 47:243-282.
3. Gustafsson, Å., A. Hagberg, U. Lundqvist, and 141.G. Persson. 1969. A proposed system of symbols for the collection of barley mutants at Svalöv. Hereditas 62:409-414.
4. Larsson, H.E.B. 1985. Morphological analysis of laxatum barley mutants. Hereditas 103:239-253.
5. Larsson, H.E.B. 1985. Genetic analysis of laxatum barley mutants. Hereditas 103:255-267.
6. Lundqvist, U. (Unpublished).
7. Stoy, V., and A. Hagberg. 1967. Effects of growth regulators on ear density mutants in barley. Hereditas 58:359-384.


H.E.B. Larsson and U. Lundqvist. 1986. Barley Genet. Newsl. 16:61.


U. Lundqvist. 2017. Barley Genet. Newsl. 47:140.