International Database for Barley Genes and Barley Genetic Stocks
BGS 49, Slender dwarf 8, sld8
Stock number: BGS 49
Locus name: Slender dwarf 8
Locus symbol: sld8
Previous nomenclature and gene symbolization:
Slender dwarf i = sld.i (2).
Monofactorial recessive (2).
Located in chromosome 7HS or 4HL (1); sld8.i is associated with SNP markers 1_0232 to 1_0376 (positions 44.83 to 54.30 cM) in 7H bins 03 to 04 and with SNP markers 1_0614 and 1_0510 (positions 146.91 and 149.26 cM) in 4H bin 10 of the Bowman backcross-derived line BW855 (1).
The plant height variant, sld8.i, was isolated from Wisconsin Pedigree 38 while it was being backcrossed into Bowman to transfer the lbi1.a (long basal rachis internode 1) gene (2). Plants for the Bowman backcross-derived line for sld8.i, BW855, were 3/4 the height of Bowman and had short coiled to kinked peduncles that were 2/3 normal length. The BW855 plants produced kernels that were 10 to15% lighter than those of Bowman. Grain yield of BW855 was 10 to 20% lower than that of Bowman (2).
Origin of mutant:
Natural occurrence in Wisconsin Pedigree 38 (Barbless, CIho 5105, GSHO 580) (2).
sld8.i (GSHO 2484) in Wisconsin Pedigree 38 (Barbless, CIho 5105, GSHO 580) (2).
Mutant used for description and seed stocks:
sld8.i (GSHO 2484) in Wisconsin Pedigree 38; sld8.i in Bowman (PI 483237)*4 (GSHO 2356); sld8.i in Bowman (PI 483237)*7 (BW855, NGB 22292).
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 Franckowiak, J.D. (Unpublished).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. 43:63.