International Database for Barley Genes and Barley Genetic Stocks

BGS 139, Necrotic leaf spot 5, nec5

BGN  43:89
Stock number: BGS 139
Locus name: Necrotic leaf spot 5
Locus symbol: nec5

Previous nomenclature and gene symbolization:



Monofactorial recessive (2, 3, 5).
Located in chromosome 3H (2, 5), nec5.g is associated with SNP markers 2_0607 to 2_0410 (positions 52.41 to 61.77cM) in 3H bins 04 to 05 of the Bowman backcross-derived line BW632 and with SNP marker on all other chromosomes except 2H (1).


Circular dark brown spots develop on the leaves (2, 5). Leaf tissue in the large spots gradually darkens and dies, but plants vigor appears normal (4).

Origin of mutant:

An ethyl methanesulfonate induced mutant in Diamant (PI 330397, PI 467775) (2, 5).

Mutational events:

nec5.g (HLNEP71/48, OUM372) in Diamant (PI 330397, PI 467775) (2, 3, 5, 6).

Mutant used for description and seed stocks:

nec5.g (OUM372) in Diamant; nec5.g in Bowman (PI 483237)*2 (BW632, NGB 22198).


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 Franckowiak, J.D. (Unpublished).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. 26:176.


J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:89.