International Database for Barley Genes and Barley Genetic Stocks

BGS 114, Curly 2, cur2

BGN  44:82
Stock number: BGS 114
Locus name: Curly 2
Locus symbol: cur2

Previous nomenclature and gene symbolization:

Deformed plant, Bikini (4, 6).
Curly 2 = cu2 (8).


Monofactorial recessive (8, 9).
Located in chromosome 3HL (7, 8, 12); cur2.b is over 36.8 cM distal from the als1 (absent lower laterals 1) locus (5, 8, 9); cur2.b is about 7.7 cM proximal from the fch2 (chlorina seedling 2) locus (13); cur2.b is associated with SNP markers 1_1436 to 1_0694 (positions 230.99 to 247.64 cM) in 3H bin 15 of the Bowman backcross-derived line BW220 (1); cur2.g is associated with SNP markers 2_0952 to 1_1516 (positions 230.5 to 249.45 cM) in 3H bins 15 to 16 of the Bowman backcross-derived line BW221 (1). The nud1.a (naked caryopsis 1) trait and the associated SNP molecular markers in chromosome 7H are retained in BW220 (1, 2).


The awn, lemma, and palea are extremely curly, the rachis is twisted slightly in most spikes, and the stem internodes are strongly curved. Leaf blades are short and severely twisted (5, 8). Roots are extremely curled compared to the straight or slightly coiled roots of normal sister plants (11). Plants of the Bowman backcross-derived lines for cur2.b, BW220, and cur2.g, BW221, were 1/3 to 1/2 of the Bowman height and produced very little grain in most environments. Kernel weights for BW221 were about 60% of those for the Bowman, while the weights for BW220 kernels were only about 40% (2).

Origin of mutant:

A spontaneous mutant in Choshiro (OUJ451, CIho 190266) (5, 9).

Mutational events:

cur2.b (Choshiro-hen , OUL006, GSHO 274) in Choshiro (OUJ451, CIho 190266) (5, 8); cur2.c (dwarf 2) in an unknown cultivar (10); cur2.d (deformed plant, Bikini 3) (NGB 115380) in Bonus (NGB 14657, PI 189763) (4, 6, 10); cur2.g (GSHO 1706) in Carina (PI 371632) (3).

Mutant used for description and seed stocks:

cur2.b (GSHO 274) in Choshiro; cur2.b in Bowman (PI 483237)*5 (GSHO 1991); cur2.b in Bowman *6 (BW220, NGB 22047); cur2.g in Bowman*5 (GSHO 1992); cur2.g in Bowman*7 (BW221, NGB 22048).


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 Franckowiak, J.D. (Unpublished).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. Franckowiak, J.D. 1992. Allelism test among selected semidwarf barleys. Barley Genet. Newsl. 21:17-23.
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. 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.
6. Nybom, N. 1954. Mutation types in barley. Acta Agric. Scand 4:430-456.
7. Singh, R.J., and T. Tsuchiya. 1974. Further information on telotrisomic analysis in barley. Barley Genet. Newsl. 4:66-69.
8. Takahashi, R., and J. Hayashi. 1966. Inheritance and linkage studies in barley. II. Assignment of several new mutant genes to their respective linkage groups by the trisomic method of analysis. Ber. Ohara Inst. landw. Biol., Okayama Univ. 13:185-198.
9. Takahashi, R., J. Hayashi, and I. Moriya. 1974. New linkage data obtained during 1972-73 season. Barley Genet. Newsl. 4:74-76.
10. Tsuchiya, T. 1974. Further results of allelism testing in barley. Barley Genet. Newsl. 4:82-85.
11. Tsuchiya, T. 1974. Root character of curly mutants in barley. Barley Genet. Newsl. 4:88-90.
12. Tsuchiya, T., and R.J. Singh. 1973. Further information on telotrisomic analysis in barley. Barley Genet. Newsl. 3:75-78.
13. Yano, Y., K. Abe, and T. Konishi. 1991. Linkage analysis of the chlorina mutant gene (f2) in barley. Barley Genet. Newsl. 20:68-71.


T. Tsuchiya and T.E. Haus. 1971. Barley Genet. Newsl. 1:136.


J.D. Franckowiak, T. Konishi, and U. Lundqvist. 1997. Barley Genet. Newsl. 26:148.
J.D. Franckowiak, and U. Lundqvist. 2014. Barley Genet. Newsl. 44:82-83.