International Database for Barley Genes and Barley Genetic Stocks
BGS 239, Scirpoides-b, sci-b
Stock number: BGS 239
Locus name: Scirpoides-b
Locus symbol: sci-b
Previous nomenclature and gene symbolization:
Scirpoides-1 = sci-4 (3).
Monofactorial recessive (2).
The location is limited to chromosomes 1H or 6H based on SNP markers retained in the Bowman backcross-derived line BW771 (1), sci-b.4 is between 1_0259 to 2_0780 (positions 70.78 to 154.89 cM) in 1H bins 07 to 11 or between 1_0061 and 2_0118 (positions 70.15 to 156.09 cM) in 6H bins 06 to 09 (1).
Plants expressing sci-b.4 gene have narrow leaves and lower leaf blades are folded inward (4). In the Bowman backcross-derived line for sci-b.4, BW771, rachis internodes were slightly elongated. BW771 plants were 2/3 to almost normal height; kernels were slightly smaller and lighter: and seed yields were about 3/4 of normal (2). Based on differences in morphology compared to the sci-a (scirpoides-a) mutants and different chromosomal segments retained in their Bowman backcross-derived lines (1), a new locus name is assigned.
Origin of mutant:
A neutron induced mutant in Bonus (NGB 14657, PI 189763) (3).
sci-b.4 (NGB 117099) in Bonus (NGB 14657, PI 189763) (4).
Mutant used for description and seed stocks:
sci-b.4 (NGB 117099) in Bonus; sci-b.4 in Bowman (PI 483237)*2 (BW771, NGB 22239).
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 Franckowiak, J.D. (Unpublished).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. Gustafsson, Å., A. Hagberg, U. Lundqvist, and G. Persson. 1969. A proposed system of symbols for the collection of barley mutants at Svalöv. Hereditas 62:409-414.
4. Lundqvist, U. (Unpublished).
J.D. Franckowiak and U. Lundqvist. 2010. Barley Genet. Newsl 40:83.
J.D. Franckowiak and U. Lundqvist. 2016. Barley Genet. Newsl 46:76.