International Database for Barley Genes and Barley Genetic Stocks

BGS 692, Necroticans 21, nec21

BGN  43:195
Stock number: BGS 692
Locus name: Necroticans 21
Locus symbol: nec21

Previous nomenclature and gene symbolization:



Monofactorial recessive (1).
Location is unknown.


The mutant phenotype for appears as small light brown, elongated spots on the leaf blades. Older leaf blades show a gradually developing necrosis at the base as spots enlarge and become more numerous. The vigor of mutant plants is fair (1). The stock (FN367, GSHO 3626) also exhibited a light green color, which may be an associated mutation; however, it was not separated from the necrotic phenotype in a small population (1).

Origin of mutant:

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

Mutational events: (FN367, GSHO 3626) in Steptoe(CIho 15229) (1).

Mutant used for description and seed stocks: (FN367, GSHO 3626) in Steptoe.


1. Kleinhofs, A. (Unpublished).


A. Kleinhofs. 2013. Barley Genet. Newsl. 43:195.