International Database for Barley Genes and Barley Genetic Stocks
BGS 128, Short crooked awn 1, sca1
Stock number: BGS 128
Locus name: Short crooked awn 1
Locus symbol: sca1
Previous nomenclature and gene symbolization:
None.
Inheritance:
Monofactorial recessive (4).
Located in chromosome 3HS (4); sca1.a is about 1.4 cM distal from the alm1 (albino lemma 1) locus (3, 4); sca1.a is associated with SNP markers 2_0356 to 2_0566 (positions 72.36 to 114.82 cM) in 3H bins 05 to 07 of Bowman backcross-derived line BW769 (1); likely in 3H bin 05.
Located in chromosome 3HS (4); sca1.a is about 1.4 cM distal from the alm1 (albino lemma 1) locus (3, 4); sca1.a is associated with SNP markers 2_0356 to 2_0566 (positions 72.36 to 114.82 cM) in 3H bins 05 to 07 of Bowman backcross-derived line BW769 (1); likely in 3H bin 05.
Description:
In the original stock, awns are reduced to a length of only 2 cm and are curved outward at the tip (4). Awn tips may have a stigma-like appearance in the original stock. In the Bowman backcross-derived line, awns are short (less than 1/4 normal), but awn tips are not curved or stigma-like (2). Plant vigor was partially restored in the Bowman backcross-derived line for sca1.a, BW769, but the awns remained very short, 2 vs. 12 cm. BW769 plants were 5 to 10% shorter than Bowman plants and headed about two days later. Kernels of BW769 were thin (3.05 vs. 2.82 mm in diameter) and light (34 vs. 56 mg); and the grain yields of BW769 were 10 to 50% of those for Bowman at various field locations (2).
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Origin of mutant:
An ethyl methanesulfonate induced mutant in Akashinriki (OUJ659, PI 467400) (4).
Mutational events:
sca1.a (OUM206, GSHO 2439)in Akashinriki (OUJ659, PI 467400) (3, 4).
Mutant used for description and seed stocks:
sca1.a (GSHO 2439) in Akashinriki; sca1.a in Bowman (PI 483237)*6 (GSHO 1951); sca1.a in Bowman*8 (BW769, NGB 22237).
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 Franckowiak, J.D. (Unpublished).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. Konishi, T., J. Hayashi, I. Moriya, and R. Takahashi. 1984. Inheritance and linkage studies in barley. VII. Location of six new mutant genes on chromosome 3. Ber. Ohara Inst. landw., Biol. Okayama Univ. 18:251-264.
4. Moriya, I., and R. Takahashi. 1980. Linkage studies of three barley mutants. Barley Genet. Newsl. 10:47-51.
2. Franckowiak, J.D. (Unpublished).
3. Konishi, T., J. Hayashi, I. Moriya, and R. Takahashi. 1984. Inheritance and linkage studies in barley. VII. Location of six new mutant genes on chromosome 3. Ber. Ohara Inst. landw., Biol. Okayama Univ. 18:251-264.
4. Moriya, I., and R. Takahashi. 1980. Linkage studies of three barley mutants. Barley Genet. Newsl. 10:47-51.
Prepared:
J.D. Franckowiak and T. Konishi. 1997. Barley Genet. Newsl. 26:164.
Revised:
J.D. Franckowiak. 2014. Barley Genet. Newsl. 44:85.
