International Database for Barley Genes and Barley Genetic Stocks

BGS 262, Curly 1, cur1

BGN  46:81
Stock number: BGS 262
Locus name: Curly 1
Locus symbol: cur1

Previous nomenclature and gene symbolization:

Curly 1 = cu1 (5).


Monofactorial recessive (4).
Located in chromosome 3HL (1); cur1.a is associated with SNP markers 1_1436 to 2_0339 (positions 230.99 to 248.51 cM) in 3H bin 15 of the Bowman backcross-derived line BW219 (1). Previously, cur1.a was positioned over 31.5 cM distal from the rob1 (orange lemma 1) locus in 6HL (5); cur1.a was reported not linked to rob1 locus (3).


All plant parts appear curved or twisted. Lemmas and awns are extremely curly. The rachis is usually bent, and tillers and their internodes are curved or wavy (5). Roots are extensively coiled. Phenotypically, the cur1.a, cur2.b, and cur2.g mutants as isolated in Bowman backcross-derived stocks, BW219, BW220, and BW221, respectively, were very similar except the cur2.b line originally has hull-less kernels (2). The SNP molecular marker retained from donor parents in these three Bowman back-cross lines indicate that the mutants are of independent origin even though they are positioned in the same region of 3HL (1). Plants of the Bowman backcross-derived line for cur1.a, BW219, were short, 1/3 to 1/2 the height of Bowman and produced very little grain in many trials. Heading was delayed by 2 to 7 days and awns were about 1/3 normal length. Kernel of BW219 were shorter and thinner than those of Bowman and weighed about 1/2 as much (2).

Origin of mutant:

The origin is unknown.

Mutational events:

cur1.a (Alb Acc 23, G395, GSHO 1705) in 48-cr cr-17 (5).

Mutant used for description and seed stocks:

cur1.a (GSHO 1705) in 48-cr cr-17; cur1.a in Bowman (PI 483237)*4 (GSHO 2088); cur1.a in Bowman*4 (BW219, NGB 22046) [The cur1.a mutant stock in Bowman (BW219, NGB 22046) is likely an allele at the cur2 locus (1, 2).]


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 Franckowiak, J.D. (Unpublished).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. Kasha, K.G., D.E. Falk, and A. Ho-Tsai. 1978. Linkage data with genes on chromosome 6. Barley Genet. Newsl. 8:61-65.
4. Robertson, D.W., G.A. Wiebe, R.G. Shands, and A. Hagberg. 1965. A summary of linkage studies in cultivated barley, Hordeum species: Supplement III. 1954-1963. Crop Sci. 5:33-43.
5. 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.


J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:242.


J.D. Franckowiak. 2016. Barley Genet. Newsl. 46:81-82.