International Database for Barley Genes and Barley Genetic Stocks
BGS 719, Opposite spikelets 3, ops3
Stock number: BGS 719
Locus name: Opposite spikelets 3
Locus symbol: ops3
Previous nomenclature and gene symbolization:
Opposite spikelets-1 = op-1 (3, 4).
Inheritance:
Monofactorial recessive (4).
Location in chromosome 5HS (1); ops3.1 is associated with SNP markers 1_1048 to 1_0688 (positions 46.35 to 52.12 cM) in 5H bin 03 and with SNP markers 2_0722 and 2_0495 (positions 23.45 and 32.35 cM) in 7H bin 02 of the Bowman backcross-derived line BW639 (1), likely in 5H bin 03.
Location in chromosome 5HS (1); ops3.1 is associated with SNP markers 1_1048 to 1_0688 (positions 46.35 to 52.12 cM) in 5H bin 03 and with SNP markers 2_0722 and 2_0495 (positions 23.45 and 32.35 cM) in 7H bin 02 of the Bowman backcross-derived line BW639 (1), likely in 5H bin 03.
Description:
The opposite spike like arrangement of spikelets in the spike of ops3.1 plants is caused variable rachis internode lengths (3, 4). Compared to normal sibs, plants of the Bowman backcross-derived line for ops3.1, BW639, were slightly later and taller and had slightly longer peduncles (2). Plants of the BW639 had 2 to 4 more kernels per spike and yielded about 3/4 as much grain as Bowman plants (2).
 to the left compared with normal Bowman.'))
Origin of mutant:
An ethylene imine induced mutant in Bonus (NGB 14657, PI 189763) (4).
Mutational events:
ops3.1 (NGB 115377, GSHO 2425) in Bonus (NGB 14657, PI 189763) (4).
Mutant used for description and seed stocks:
ops3.1 (NGB 115377, GSHO 2425) in Bonus; ops3.1 in Bowman (PI 483237)*2 (GSHO 2316); ops3.1in Bowman*5 (BW639, NGB 22204).
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. 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 Franckowiak, J.D. (Unpublished).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 Lundqvist, U. (Unpublished).
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 Franckowiak, J.D. (Unpublished).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 Lundqvist, U. (Unpublished).
Prepared:
U. Lundqvist and J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:214.
