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).
Inheritance:
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.
Description:
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).
No images
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).
Mutational events:
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).
References:
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 Franckowiak, J.D. (Unpublished).
Prepared:
J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:104.
