International Database for Barley Genes and Barley Genetic Stocks
BGS 197, Necrotic leaf spot 34, nec34
Stock number: BGS 197
Locus name: Necrotic leaf spot 34
Locus symbol: nec34
Previous nomenclature and gene symbolization:
Necrotic leaf spot k = nec.k (1).
Monofactorial recessive (1, 2).
Located in chromosome 4HS (1); nec34.k is associated with SNP markers 1_0738 to 1_0221 (positions 26.58 to 29.67 cM) in 4H bin 02 of the Bowman backcross-derived line BW625 (1), in 4H bin 02.
The original nec34.k variant in breeding line ND13917 (ND10278/ND11231) develops numerous small black flecks on the leaf blades, leaf sheathes, and awns (2). Plants of the Bowman backcross-derived line for nec34.k, BW625, were phenotypically similar to Bowman except for the necrotic flecks (2).
Origin of mutant:
A spontaneous variant in ND13917 (ND10278/ND11231), ND10278 is held as PI 643259 and ND11231 is a Logan (PI 592784) sib (2).
nec34.k in ND13917 (2).
Mutant used for description and seed stocks:
nec34.k in ND13917; nec34.k in Bowman (PI 483237)*6 (BW625, NGB 22191).
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. Franckowiak, J.D. (Unpublished).
J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:104.