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).
Inheritance:
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).
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).
Description:
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).
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Origin of mutant:
A mutant was induced by UV-ray treatment of pollen grains of Bonus (NGB 14657, PI 189763) (3).
Mutational events:
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).
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. 2010. Genetic dissection of barley morphology and development. Plant Physiol. 155:617-627.
2. Franckowiak, J.D. (Unpublished).
3. Lundqvist, U. (Unpublished).
2. Franckowiak, J.D. (Unpublished).
3. Lundqvist, U. (Unpublished).
Prepared:
U. Lundqvist and J.D. Franckowiak. 2010. Barley Genet. Newsl. 40:60.
