International Database for Barley Genes and Barley Genetic Stocks
BGS 343, Leafy bract 1, Lfb1
Stock number: BGS 343
Locus name: Leafy bract 1
Locus symbol: Lfb1
Previous nomenclature and gene symbolization:
Leafy bract = Lfb (3).
Inheritance:
Monofactorial dominant (3) with variable expressivity.
Located in chromosome 5HL (4); Lfb1.a is about 7.5 cM from the srh1 (short rachilla hair 1) locus (4); Lfb1.a is associated with SNP markers 2_0645 to 2_0850 (positions 134.85 to 157.13 cM) in 5H bins 08 to 09 of the Bowman backcross-derived line BW478 (1).
Located in chromosome 5HL (4); Lfb1.a is about 7.5 cM from the srh1 (short rachilla hair 1) locus (4); Lfb1.a is associated with SNP markers 2_0645 to 2_0850 (positions 134.85 to 157.13 cM) in 5H bins 08 to 09 of the Bowman backcross-derived line BW478 (1).
Description:
A leaf-like bract forms at the collar below the spike. The size of the leaf-like bract may vary from vestigial to 5 cm or longer (3, 4). Tiller to tiller variation in bract size occurs and the bract is often larger in cultivars having six-rowed spikes (2). The agronomic and morphological traits of Bowman backcross-derived line for the Lfb1.a mutant, BW478, were similar to those of Bowman (2).
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Origin of mutant:
An induced mutant in Montcalm (CIho 7149) (3).
Mutational events:
Lfb1.a (GSHO 1577) in Montcalm (CIho 7149) (3).
Mutant used for description and seed stocks:
Lfb1.a (GSHO 1577) in Montcalm; Lfb1.a in Bowman*7 (GSHO 2152, BW478, NGB 20706).
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 Franckowiak, J.D. (Unpublished).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. Walker, G.W.R., K. Kasha, and R.A. Miller. 1958. Recombination studies in barley. Proc. Genet. Soc. Can. 3:41-43.
4. Walker, G.W.R., J. Dietrich, R. Miller, and K.J. Kasha. 1963. Recent barley mutants and their linkages II. Genetic data for further mutants. Can. J. Genet. Cytol. 5:200-219.
2. Franckowiak, J.D. (Unpublished).
3. Walker, G.W.R., K. Kasha, and R.A. Miller. 1958. Recombination studies in barley. Proc. Genet. Soc. Can. 3:41-43.
4. Walker, G.W.R., J. Dietrich, R. Miller, and K.J. Kasha. 1963. Recent barley mutants and their linkages II. Genetic data for further mutants. Can. J. Genet. Cytol. 5:200-219.
Prepared:
J.D. Franckowiak. 1998. Barley Genet. Newsl. 28:30.
Revised:
J.D. Franckowiak. 2011. Barley Genet. Newsl. 41:140.
