International Database for Barley Genes and Barley Genetic Stocks
BGS 242, Slender dwarf 6, sld6
Stock number: BGS 242
Locus name: Slender dwarf 6
Locus symbol: sld6
Previous nomenclature and gene symbolization:
Slender dwarf g = sld.g (3).
Monofactorial recessive (2, 3).
Located in chromosome 1H (1); sld6.g is associated with SNP markers 1_0259 to 1_0552 (positions 70.78 to 88.33 cM) in chromosome 1H bins 07 to 08 and SNP markers 2_0226 to 2_0206 (positions 3.14 to 9.61 cM) in 5H bin 01 of the Bowman backcross-derived line BW854 (1).
Plants with the sld6.g mutant show reduced height, and leaf blades are much shorter and slightly narrower (2). Plants of the Bowman backcross-derived line for sld6.g (BW854) were 15 to 25% shorter than those of Bowman and spikes had about 4 fewer fertile rachis nodes. Spikes were semi-compact with rachis internodes about 25% shorter than those of Bowman. Kernels of BW854 were shorter and slightly thinner than those of Bowman. Kernel weights and grain yields were about 3/4 of normal (3). Based on the heterogeneous SNP marker positions in BW954, sld6.g is not an allele at any of the previously named slender dwarf loci (1, 3).
Origin of mutant:
A sodium azide induced mutant in Glenn (CIho 15769) (2).
sld6.g (GSHO 2482) in Glenn (CIho 15769) (2, 3).
Mutant used for description and seed stocks:
sld6.g (GSHO 2482) in Glenn; sld6.g in Bowman (PI 483237, NGB22812)*5 (GSHO 2355), sld6.g in Bowman*7 (BW854, NGB 22291).
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. 2010. Genetic dissection of barley morphology and development. Plant Physiol. 155:617-627.
2. Faue, A.C. 1987. Chemical mutagenesis as a breeding tool for barley. M.S. Thesis. North Dakota State Univ., Fargo.
3. Franckowiak, J.D. (Unpublished).
J.D. Franckowiak. 2010. Barley Genet. Newsl. 40:87.
J.D. Franckowiak. 2018. Barley Genet. Newsl. 48:117-118.