International Database for Barley Genes and Barley Genetic Stocks
BGS 150, Scirpoides leaf-b, scl-b
Stock number: BGS 150
Locus name: Scirpoides leaf-b
Locus symbol: scl-b
Previous nomenclature and gene symbolization:
Scirpoides leaf-5 = scl.5 (3).
Monofactorial recessive (2).
Probably located on chromosomes 3HL or 6HS (1); scl-b.5 is associated with SNP markers 2_0130 to 1_1172 (positions 151.97 to 190.87 cM) in 3HL and with SNP markers 1_0061 to 1_1205 (positions 70.15 to 82.43 cM) in 6HS of the Bowman backcross-derived line BW777 (1).
Leaf blades of scl-b plants are folded inward and are narrow compared to those of normal sibs. Folding of the leaf blade persists until maturity (2, 3). Plants of Bowman backcross-derived line BW777 were 15% shorter than Bowman, kernels were narrower and 15% lighter, and grain yields were about 25% lower (2). Plants of BW777 have inward folded leaf blades that are less than 2/3 as wide as those of Bowman (2). When grown in the greenhouse scl-b.5 plants had very narrow leaf blades that showed more inward folding than scl-a mutants. Also, the awns of spikes were often trapped by the collar of the flag leaf during spike emergence (2). A new locus symbol is recommended based on the morphological differences compared to scl-a mutants and the lack of SNP markers retained in chromosome 1HL (1, 2).
Origin of mutant:
A mutant was induced by UV-ray treatment of pollen grains of Bonus (NGB 14657, PI 189763) (3).
scl-b.5 (NGB 117103) in Bonus (NGB 14657, PI 189763) (3).
Mutant used for description and seed stocks:
scl-b.5 (NGB 117103) in Bonus; scl-b.5 in Bowman (PI 483237)*3 (BW777, NGB 20754).
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. Franckowiak, J.D. (Unpublished).
3. Lundqvist, U. (Unpublished).
U. Lundqvist and J.D. Franckowiak. 2010. Barley Genet. Newsl. 40:60.