International Database for Barley Genes and Barley Genetic Stocks
BGS 585, Praematurum-i, mat-i
Stock number: BGS 585
Locus name: Praematurum-i
Locus symbol: mat-i
Previous nomenclature and gene symbolization:
Praematurum-37 = mat-37 (7).
Inheritance:
Monofactorial recessive (4).
Located in chromosome 7HL (1); mat-i.37 is associated with SNP markers 1_0885 to 3_0593 (positions 192.14 to 198.70 cM) in 7H bins 11 to 12 of the Bowman backcross-derived line BW514 (1).
Located in chromosome 7HL (1); mat-i.37 is associated with SNP markers 1_0885 to 3_0593 (positions 192.14 to 198.70 cM) in 7H bins 11 to 12 of the Bowman backcross-derived line BW514 (1).
Description:
Early heading mutants at the mat-i locus have a drastic increase in earliness (heading 6 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 (5). Spikes of mutants are relatively short (7). The expression of earliness was relatively strong in BW514, the Bowman backcross-derived line for mat-i.37, was about 4 days earlier heading under long days and up to 15 days earlier under short days (2). Depend on heading dates, BW514 plants were 10 to 40% shorter than Bowman plants and grain yields were up to 50% lower (2).
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Origin of mutant:
An ethylene imine induced mutant in Bonus (NGB 14657, PI 189763) (7).
Mutational events:
mat-i.37 (NGB 110037, GSHO 1795), -i.76 (NGB 110076) in Bonus (NGB 14657, PI 189763), -i.303 (NGB 110303) in Foma (NGB 14659, CIho 11333), -i.742 (NGB 110742) in Kristina (NGB 14661, NGB 1500), -i.901 (NGB 116856), -i.914 (NGB 117445) in Bonus (5, 6, 7).
Mutant used for description and seed stocks:
mat-i.37 (NGB 110037, GSHO 1795) in Bonus; mat-i.37 in Bowman (PI 483237)*3 (GSHO 2287); mat-i.37 in Bowman*7 (BW514, NGB 20742).
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 Franckowiak, J.D. (Unpublished).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., 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).
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).
Prepared:
U. Lundqvist and J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:512.
Revised:
U. Lundqvist and J.D. Franckowiak. 2015. Barley Genet. Newsl. 45:214.
