International Database for Barley Genes and Barley Genetic Stocks

BGS 672, Necrotic leaf spot 9, nec9

BGN  43:181
Stock number: BGS 672
Locus name: Necrotic leaf spot 9
Locus symbol: nec9

Previous nomenclature and gene symbolization:

Mutant 3091 (1, 2).


Monofactorial recessive (1, 2).
Located in chromosome 3HL (1, 2); nec9.3091 is linked to AFLP marker E37M33-6 in 3H (1, 2).


Plants with the nec9.3091 mutation produce brown spots towards the leaf tips and leaf edges, particularly on the first leaf (1). The leaf spot phenotype of the nec9.3091 mutant resembles those of mutants nec4.f (necrotic leaf spot 4) and nec5.g (necrotic leaf spot 5), but it is not allelic to them (1, 2). The Hv-hir3 (Hordeum vulgare hypersensitive induced reaction 3) and Hv-hir4 (Hordeum vulgare hypersensitive induced reaction 4) genes are expressed significantly more in mutant nec9.3091 than in the Bowman Rph3.c line (2).

Origin of mutant:

A fast neutron induced mutant in Bowman Rph3.c (Bowman*11//Estate/3.2 uz als MM) (BW746, PI 643152, NGB 22452) (1, 2).

Mutational events:

nec9.3091 (NGB 23525, GSHO 3599) in Bowman Rph3.c (Bowman*11//Estate/3.2 uz als MM) (PI 643152, NGB 22452) (1, 2).

Mutant used for description and seed stocks:

nec9.3091 (NGB 23525, GSHO 3599) in Bowman Rph3.c (BW746, PI 643152, NGB 22452).


1. Wright, S.A.I., M. Azarang, and A.B. Falk. 2007. Four new barley mutants. Barley Genet. Newsl. 37:34-36.

2. Wright, S.A.I., M. Azarang, and A.B. Falk. 2013. Barley lesion mimics, supersusceptible or highly resistant to leaf rust and net blotch. Plant Path. 62:982-992.


S.A.I. Wright, A.B. Falk, J.D. Franckowiak and U. Lundqvist. 2013. Barley Genet. Newsl. 43:181.