International Database for Barley Genes and Barley Genetic Stocks

BGS 582, Praematurum-f, mat-f

BGN  45:210
Stock number: BGS 582
Locus name: Praematurum-f
Locus symbol: mat-f

Previous nomenclature and gene symbolization:

Praematurum-23 = mat-23 (7).


Monofactorial recessive (4).
Likely located in chromosome 1H (1); mat-f.23 is associated with SNP markers 1_0764 to 1_1326 (positions 61.55 to 82.35 cM in 1H) in 1H bins 06 to 08 and with markers 1_0310 to 2_0152 (positions 285.74 to 298.99) in 5HL bin 15 of the backcross-derived line BW511 (1).


Early heading mutants at the mat-f locus have a moderate increase in earliness (heading 3 to 4 days earlier than the parents) under field cultivation in Sweden (6, 7). When grown under controlled environmental conditions, mutants are photo- and thermoperiod sensitive and have a pronounced long-day response (3). Early heading of mat-f.23 segregates was observed in fall greenhouse nurseries in Fargo, North Dakota, USA. The Bowman backcross-derived line for mat-f.23, BW511, was similar in maturity to Bowman and for other agronomic traits when grown in Scotland. In New Zealand, plants were slightly shorter than Bowman, while in Idaho, USA, grain yields were lower than those of Bowman. When grown under short-day conditions in Queensland, Ausatralia, mat-f.23 plants headed about 7 days earlier than Bowman (2).

Origin of mutant:

An X-ray induced mutant in Bonus (NGB 14657, PI 189763) (7).

Mutational events:

mat-f.23 (NGB 110023, GSHO 1792), -f.780 (NGB 110780), -f.875 (NGB 110875), -f.891 (NGB 116846), -f.908 (NGB 117439), -f.932 (NGB 117463) in Bonus (NGB 14657, PI 189763), -f.983 (NGB 117514) in Sv 79353 (5, 6, 7).

Mutant used for description and seed stocks:

mat-f.23 (NGB 110023, GSHO 1792) in Bonus; mat-f.23 in Bowman (PI 483237)*2 (GSHO 2284); mat-f.23 in Bowman*5 (BW511, NGB 20739).


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 Physiology. Epubl. 2010 November 18, 2010 as DOI:10.1104/pp110.166249.

2. Franckowiak, J.D. (Unpublished).

3. Gustafsson, Å., I. Dormling, and U. Lundqvist. 1982. Gene, genotype and barley climatology. Biol. Zent. Bl. 101:763-782.

4. 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.

5. Lundqvist, U. 1991. Swedish mutation research in barley with plant breeding aspects. A historical review. p. 135-148. In Plant Mutation Breeding for Crop Improvement. Proc. Int. Symp. Vienna, 1990. Int. Atomic Energy Agency, Vienna.

6. Lundqvist, U. 1992. Coordinator's report: Earliness genes. Barley Genet. Newsl. 21:127-129.

7. Lundqvist, U. (Unpublished).


U. Lundqvist and J.D. Franckowiak. 1997. Barley Genet. Newsl. 26: 509.


J.D. Franckowiak and U. Lundqvist. 2010. Barley Genet. Newsl. 40:137.
J.D. Franckowiak and U. Lundqvist. 2015. Barley Genet. Newsl. 45:210-211.