International Database for Barley Genes and Barley Genetic Stocks

BGS 625, Scirpoides-a, sci-a

BGN  44:200
Stock number: BGS 625
Locus name: Scirpoides-a
Locus symbol: sci-a

Previous nomenclature and gene symbolization:

Scirpoides-1 = sci-1 (3).
Scirpoides-3 = sci-3 (3).


Monofactorial recessive (2, 3).
Located in chromosome 5H (1); sci-a.3 is associated with SNP markers 1_1198 to 2_1121 (positions 73.70 to 105.91 cM) in 5H bins 04 to 06 of the Bowman backcrossed-derived line BW773 (1); sci-a.1 is associated with SNP markers 1_0686 to 2_1480 (positions 52.12 to 137.96 cM) in 5H bins 03 to 08 of the Bowman backcrossed-derived line BW772 (1).


Plants expressing the sci-a gene appear to have very narrow, inward folded leaf blades. The tip of emerging leaf blade is sometimes trapped inside the previous one. Folding of the leaf blade persists until maturity. Premature yellowing of leaf blade tips may occur shortly after heading. Spikes apeared 1/2 to 2/3 normal length and plant height is reduced slightly (2, 4). Compared to Bowman, plants of the Bowman backcross-derived lines for sci-a.1, BW772, and sci-a.3, BW773, were slightly shorter than those of Bowman, with slightly shorter rachis internodes, and had 1 to 3 fewer kernels per spike. Kernels weights for BW772 and BW773 were slightly lower in some trials. Grain yields ranged from 40 to 70% of those for Bowman; however, BW772 often yielded slightly less than BW773 (2).

Origin of mutant:

A neutron induced mutant in Bonus (NGB14657, PI 189763) (4).

Mutational events:

sci-a.3 (NGB 117097) in Bonus (NGB14657, PI 189763) (4); sci-a.1 (NGB 117095) in Gull (NGB 1480, CIho 1145, GSHO 466) (4).

Mutant used for description and seed stocks:

sci-a.3 (NGB 117097) in Bonus; sci-a.1 (NGB 117095) in Gull; sci-a.3 in Bowman (PI 483237)*4 (GSHO 3430; BW773, NGB 22241); sci-a.1 in Bowman*4 (BW772, NGB 22240).


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 Franckowiak, J.D. (Unpublished).

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 Lundqvist, U. (Unpublished).


U. Lundqvist and J. D. Franckowiak. 2002. Barley Genet. Newsl. 32:126.


U. Lundqvist and J.D. Franckowiak. 2014. Barley Genet. Newsl. 44:200.