International Database for Barley Genes and Barley Genetic Stocks

BGS 683, Necroticans 12, nec12

BGN  43:186
Stock number: BGS 683
Locus name: Necroticans 12
Locus symbol: nec12

Previous nomenclature and gene symbolization:



Monofactorial recessive (1).
Location is unknown.


The phenotype is expressed as a few very distinct small to medium brown spots on young leaf blades. On older leaves of nec12 plants, the spots turn to a uniform whitish necrotic bleaching occurring primarily on the underside of the leaf blade (1). This whitish color is very noticeable and distinctive and is observed more toward the base of the leaf blade. Very few spots, if any, are present on the awns. Plant vigor is good (1).

Origin of mutant:

A fast neutron induced mutant in Steptoe (CIho 15229) (1).

Mutational events: (FN225, GSHO 3613), nec12.ah (FN248, GSHO 3614), (FN250, GSHO 3615) in Steptoe (CIho 15229) (1).

Mutant used for description and seed stocks: (FN225, 3613), nec12.ah (FN248, GSHO 3614), (FN250, GSHO 3615) in Steptoe.


Kleinhofs, A. (Unpublished).


A. Kleinhofs. 2013. Barley Genet. Newsl. 43:186.