International Database for Barley Genes and Barley Genetic Stocks

BGS 138, Necrotic leaf spot 4, nec4

BGN  43:88
Stock number: BGS 138
Locus name: Necrotic leaf spot 4
Locus symbol: nec4

Previous nomenclature and gene symbolization:



Monofactorial recessive (2, 3, 5).
Located in chromosome 3H (2, 5); nec4.f is associated with SNP markers in both arms of 3H and the long arm of 2H of the Bowman backcross-derived line BW631 (1).


Small black spots develop on the leaves (2, 5). The spots persist until maturity, but they do not appear to reduce plant vigor (4).

Origin of mutant:

An X-ray induced mutant in Proctor (PI 280420) (2, 5.

Mutational events:

nec4.f (728/63, OUM371) in Proctor (PI 280420) (2, 3, 5, 6).

Mutant used for description and seed stocks:

nec4.f (OUM371) in Proctor; nec4.f in Bowman (PI 483237)*2 (BW631, NGB 22197).


1. Druka, A., J. Franckowiak, U. Lundqvist, N. Bonar, J. Alexander, K. Houston, S. Radovic, F. Shahinnia, V. Vendramin, M. Morgante, N. Stein, and R. Waugh. 2011. Genetic dissection of barley morphology and development. Plant Physiol. 155:617-627.
2. Fischbeck, G., and H. Häuser. 1976. Research notes. Barley Genet. Newsl. 6:28-29.
3. Fischbeck, G., and H. Häuser. 1978. Cytogenetic studies of some induced barley mutants. Barley Genet. Newsl. 8:36-37.
4. Franckowiak, J.D. (Unpublished).
5. Häuser, J., and G. Fischbeck. 1976. Untersuchungen zur Lokalisierung einiger Mutationen von Gerste (Hordeum sativum). Z. Pflanzenzücht. 77:269-280.
6 Søgaard, B., and P. von Wettstein-Knowles. 1987. Barley: genes and chromosomes. Carlsberg Res. Comm. 52:123-196.


J.D. Franckowiak and U. Lundqvist. 1997. Barley Genet. Newsl. 26:175.


J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:88.