International Database for Barley Genes and Barley Genetic Stocks

BGS 693, Necroticans 22, Nec22

BGN  43:196
Stock number: BGS 693
Locus name: Necroticans 22
Locus symbol: Nec22

Previous nomenclature and gene symbolization:



Monofactorial dominant (1).
Location is unknown.


Small to large brown irregularly shaped spots develop on the leaf blades of plants. The spots show a little spreading as the leaves mature. The mutant is not allelic with the only previously reported dominant necrotic leaf mutant, Necrotic leaf spot 6, (Nec6.h) (GSHO 2424, BGS 611). The mutant is possibly allelic with Nec26.ay (FN451, GSHO 3631, BGS 697); however, the conclusion was based on a small number of F2 plants (1).

Origin of mutant:

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

Mutational events: (FN368, GSHO 3627) in Steptoe (CIho 15229) (1).

Mutant used for description and seed stocks: (FN368, GSHO 3627) in Steptoe.


1. Kleinhofs, A. (Unpublished).


A. Kleinhofs. 2013. Barley Genet. Newsl. 43:196.