International Database for Barley Genes and Barley Genetic Stocks
BGS 187, Brachytic 9, brh9
Stock number: BGS 187
Locus name: Brachytic 9
Locus symbol: brh9
Previous nomenclature and gene symbolization:
Brachytic-k = brh.k (4).
Inheritance:
Monofactorial recessive (4, 5).
Located in chromosome 4HL (1); brh9.k is about 11.7 cM distal from SRR marker Bmac0310 in 4H bin 06 (1); brh9.k is associated with SNP markers 1_1180 to 2_0906 (positions 58.13 to 92.93 cM) in 4H bins 05 to 06 of the Bowman backcross-derived line BW101 (2).
Located in chromosome 4HL (1); brh9.k is about 11.7 cM distal from SRR marker Bmac0310 in 4H bin 06 (1); brh9.k is associated with SNP markers 1_1180 to 2_0906 (positions 58.13 to 92.93 cM) in 4H bins 05 to 06 of the Bowman backcross-derived line BW101 (2).
Description:
Culms and peduncles are about 3/4 normal length and awns are 3/4 to 5/6 of normal length. Rachis internodes are slightly shorter than those of normal sibs. Seedling leaves of brh9.k plants of Bowman backcross-derived line BW101 are relatively short (1, 3). The kernels of BW101 plants were shorter and kernel weights were about 20% lower than those of normal sibs. Grain yields averaged less than 1/2 normal (1, 3); however, plants appeared nearly normal when grown in Dundee, Scotland (3). The brh9.k gene was found to be non-allelic at brh5 locus, which is located in the same region of 4HS (1).
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Origin of mutant:
A sodium azide induced mutant in Birgitta (NGB 14667, NGB 1494, NSGC 1870) (6).
Mutational events:
brh9.k (17:14:4, DWS1006, GSHO 1676) in Birgitta (NGB 14667, NGB 1494, NSGC 1870) (4, 5).
Mutant used for description and seed stocks:
brh9.k (GSHO 1676) in Birgitta; brh9.k in Bowman (PI 483237)*5 (GSHO 2170); brh9.k in Bowman*7 (BW101, NGB 20507).
References:
1. Dahleen, L.S., L.J. Vander Wal, and J.D. Franckowiak. 2005. Characterization and molecular mapping of genes determining semidwarfism in barley. J. Hered. 96:654-662.
2. 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.
3. Franckowiak, J.D. (Unpublished).
4. Franckowiak, J.D. 1995. The brachytic class of semidwarf mutants in barley. Barley Genet. Newsl. 24:56-59.
5. Franckowiak, J.D., and A. Pecio. 1992. Coordinator’s report: Semidwarf genes. A listing of genetic stocks. Barley Genet. Newsl. 21:116-127.
6. Lehmann, L.C. 1985. (Personal communications).
2. 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.
3. Franckowiak, J.D. (Unpublished).
4. Franckowiak, J.D. 1995. The brachytic class of semidwarf mutants in barley. Barley Genet. Newsl. 24:56-59.
5. Franckowiak, J.D., and A. Pecio. 1992. Coordinator’s report: Semidwarf genes. A listing of genetic stocks. Barley Genet. Newsl. 21:116-127.
6. Lehmann, L.C. 1985. (Personal communications).
Prepared:
J.D. Franckowiak and L.S. Dahleen. 2007. Barley Genet. Newsl. 37:244.
Revised:
J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:99.
