International Database for Barley Genes and Barley Genetic Stocks

BGS 79, White streak 7, wst7

BGN  47:61
Stock number: BGS 79
Locus name: White streak 7
Locus symbol: wst7

Previous nomenclature and gene symbolization:

Ribbon grass = rb (7).
White streak-k = wst,,k (11).
White streak-B = wst,,B (9).


Monofactorial recessive (2, 12).
Located in chromosome 2HL (6, 8, 9, 10); wst7.k is about 22.0 cM distal from the gpa1 (grandpa 1) locus (2, 10); wst7.k is over 29.4 cM distal from the lig1 (liguleless 1) locus (9); wst7.k is about 6.1 cM from RFLP marker MWG949A (1); wst7.k is associated with SNP markers 2_1346 and 1_283 (positions 233.94 and 234.63 cM) in 2H bin 14 of the Bowman backcross-derived line BW916 (3), in 2H bin 14.


Vertical white streaks of variable width and number develop in the leaf blades of young secondary tillers. Fewer white streaks and fewer tillers with white streaks occur as environmental conditions become warm. White streaks can be found until near maturity, but they are difficult to observe after heading under field conditions. Often the lower or first leaves on early tillers have more and wider streaks. There were no apparent affects of the wst7.k gene on agronomic traits in the Bowman backcross-derived line BW916 (5).

Origin of mutant:

A spontaneous mutant isolated by Robertson (7, 12).

Mutational events:

wst7.k (GSHO 247) in an unknown cultivar (2, 12).

Mutant used for description and seed stocks:

wst7.k (GSHO 247) in an unknown cultivar; wst7.k from R.I. Wolfe's Multiple Recessive Marker Stock (GSHO 3451) in Bowman (PI 483237)*7 (GSHO 1935, BW916, NGB 22347).


1. Costa, J.M., A. Corey, M. Hayes, C. Jobet, A. Kleinhofs, A. Kopisch-Obusch, S.F. Kramer, D. Kudrna, M. Li, O. Piera-Lizaragu, K. Sato, P. Szues, T. Toojinda, M.I. Vales, and R.I. Wolfe. 2001. Molecular mapping of the Oregon Wolfe Barleys: a phenotypically polymorphic doubled-haploid population. Theor. Appl. Genet. 103:415-424.
2. Doney, D.L. 1961. An inheritance and linkage study of barley with special emphasis on purple pigmentation or the auricle. M.S. Thesis. Utah State Univ., Logan.
3. 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.
4. Franckowiak, J.D. 1996. Coordinator's report: Chromosome 2. Barley Genet. Newsl. 25:88-90.
5. Franckowiak, J.D. (Unpublished).
6. Kasha, K.J. 1982. Coordinator's report: Chromosome 6. Barley Genet. Newsl. 12:90-92.
7. Robertson, D.W., G.A. Wiebe, and R.G. Shands. 1947. A summary of linkage studies in barley: Supplement I, 1940-1946. J. Am. Soc. Agron. 39:464-473.
8. Schondelmaier, J., G. Fischbeck, and A. Jahoor. 1993. Linkage studies between morphological and RFLP markers in the barley genome. Barley Genet. Newsl. 22:57-62.
9. Shin, J.S., S. Chao, L. Corpuz, and T.K. Blake. 1990. A partial map of the barley genome incorporating restriction fragment length polymorphism, polymerase chain reaction, isozyme, and morphological marker loci. Genome 23:803-810.
10. Walker, G.W.R. 1974. Linkage data for rb and mt3. Barley Genet. Newsl. 4:90-91.
11. Wolfe, R.I., and J.D. Franckowiak. 1991. Multiple dominant and recessive genetic marker stocks in spring barley. Barley Genet. Newsl. 20:117-121.
12. Woodward, R.W. 1957. Linkages in barley. Agron. J. 49:28-32.


J.D. Franckowiak and R.I. Wolfe. 1997. Barley Genet. Newsl. 117.


J.D. Franckowiak. 2007. Barley Genet. Newsl. 37:207-208.
J.D. Franckowiak. 2011. Barley Genet. Newsl. 41:87-88.
J.D. Franckowiak. 2017. Barley Genet. Newsl. 47:61-62.