International Database for Barley Genes and Barley Genetic Stocks

BGS 158, Yellow head 1, yhd1

BGN  42:250
Stock number: BGS 158
Locus name: Yellow head 1
Locus symbol: yhd1

Previous nomenclature and gene symbolization:

Yellow head = yh (5).


Monofactorial recessive (4, 5).
Located in chromosome 4HL (4); yhd1.a is over 8.7 cM distal from the Hsh1 (Hairy leaf sheath 1) locus (3, 4); yhd1.a is associated with SNP markers 1_0712 to 2_0013 (positions 170.17 to 183.54 cM) in 4H bins 12 to 13 of the Bowman backcross-derived line BW920 (1).


The immature spikes appear ivory to pale yellow in color; the lemma is ivory-colored, but terminates into green tip with green awns; the plant has a whitish lower leaf sheath and ivory-colored culm nodes and rachis internodes (4). The pattern of reduced chlorophyll development is similar to the alm1 (albino lemma 1) mutants. Plants of Bowman-backcross-derived line for yhd1.a, BW920, headed and matured slightly earlier than Bowman and kernels were slightly lighter (2).

Origin of mutant:

A spontaneous mutant in an unknown cultivar (4).

Mutational events:

yhd1.a (OUL012, GSHO 574) in Kimugi (4).

Mutant used for description and seed stocks:

yhd1.a (GSHO 574) in Kimugi; yhd1.a in Bowman (PI 483237)*8 (GSHO 2028, BW920, NGB 22349).


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 Franckowiak, J.D. (Unpublished).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., and R. Takahashi. 1986. Location of hs for hairy sheath and yh for yellow head character on barley chromosome 4. Barley Genet. Newsl. 16:24-27.
4. 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.
5. Takahashi, R., J. Hayashi, and S. Yasuda. 1957. [Four genes in linkage in barley, which are inherited independently of the markers in the known seven linkage groups in barley.] Nogaku Kenkyu 45:49-58. [In Japanese.]


T.E. Haus and T. Tsuchiya. 1971. Barley Genet. Newsl. 1:144.


J. D. Franckowiak and T. Konishi. 1997. Barley Genet. Newsl. 26:185.
J.D. Franckowiak. 2012. Barley Genet. Newsl. 42:250.