International Database for Barley Genes and Barley Genetic Stocks

BGS 322, Dusky 1, dsk1

BGN  41:128
Stock number: BGS 322
Locus name: Dusky 1
Locus symbol: dsk1

Previous nomenclature and gene symbolization:



Monofactorial recessive (5).
Located in chromosome 5HL (5); dsk1.a is about 17.6 cM distal from the srh1 (short rachilla hair 1) locus and 7.8 cM proximal from the raw1 (smooth awn 1) locus (3, 4); dsk1.a is associated with SNP markers 1_0024 to 2_1273 (positions 165.44 to 171.34 cM) in 5H of the Bowman backcrossed-derived lines BW250 and 251 (1), in 5H bin 10.


After heading as the plant matures, leaf blades begin to dehydrate and turn a dusky, olive-gray, color. Many, small dark spots occur scattered over the surface of the olive-gray plant parts. Even after maturity, spikes and culms remain faint green in color (5). When plants of the Bowman backcross-derived line for dsk1.a, BW251, are grown in the greenhouse, moisture stress causes lower leaves to die rapidly without loss of green pigments. Anthers are pale green instead of yellow at anthesis. Other plant characteristics of BW251 appear in the normal range compared with those of Bowman (2).

Origin of mutant:

A gamma-ray induced mutant in Chikurin Ibaraki 1 (OUJ069, CIho 7370) isolated by A. Yamashita (5).

Mutational events:

dsk1.a (OUM299, GSHO 1714) in Chikurin Ibaragi 1 (OUJ069, CIho 7370) (4, 5).

Mutant used for description and seed stocks:

dsk1.a (GSHO 1714) in Chikurin Ibaragi 1; dsk1.a with cur5.h in Bowman (PI 483237, BW250, NGB 22075)*7 (GSHO 2120), dsk1.a in Bowman*8 (PI 3423, BW251, NGB 22076).


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 Franckowiak, J.D. (Unpublished).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. Hayashi, J., T. Konishi, I. Moriya, and R. Takahashi. 1984. Inheritance and linkage studies in barley. VI. Ten mutant genes located on chromosomes 1 to 7, except 3. Ber. Ohara Inst. landw. Biol., Okayama Univ. 18:227-250.
4. Hayashi, J., I. Moriya, and R. Takahashi. 1983. A further study on linkage of the "dusky" mutant, dsk. Barley Genet. Newsl. 13:42-44.
5. Takahashi, R., J. Hayashi, and I. Moriya. 1972. New linkage data obtained in 1971. Barley Genet. Newsl. 2:74-76.


J.D. Franckowiak and T. Konishi. 1997. Barley Genet. Newsl. 26:270.


J.D. Franckowiak. 2011. Barley Genet. Newsl. 41:128.