International Database for Barley Genes and Barley Genetic Stocks
BGS 462, Yellow streak 3, yst3
Stock number: BGS 462
Locus name: Yellow streak 3
Locus symbol: yst3
Previous nomenclature and gene symbolization:
Yellow streak c = yst,,c (4).
Inheritance:
Monofactorial recessive (3, 4).
Located in chromosome 3HS (3); yst3.c is linked to the btr2 (non-brittle rachis 2) locus based on linkage drag (3); trisomic analyses of the yst3 locus have not been successful (5, 6, 7); yst3.c is associated with SNP markers 2_1101 to 2_0704 (positions 74.51 to 98.41 cM) in 3H bins 05 to 06 of the Bowman backcross-derived line BW926 (1).
Description:
Yellow streaks of variable width and number develop in the leaves, stems, and spikes of homozygous plants. Some plants are almost entirely yellow, similar to chlorina plants. Penetrance is 100%, but expressivity is highly variable and finding streaks may require careful observation. Colder environments increase the number and width of the yellow streaks (2). Plants of the Bowman backcross-derived line for yst3.c, BW926, headed 3 to 4 days later than Bowman. Spikes had about 3 more kernels and kernel weight were about 10% lower, 48 vs. 55 mg. The grain yields for BW926 were 40 to 60% of the Bowman yields (2).
Origin of mutant:
A spontaneous mutant in Lion (CIho 923) (4).
Mutational events:
yst3.c (GSHO 48) in Lion (CIho 923) (4).
Mutant used for description and seed stocks:
yst3.c (GSHO 48) in Lion; yst3.c in Bowman (PI 483237)*6 (GSHO 1939); yst3.c in Bowman*7 (BW926, NGB 22355).
References:
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 Franckowiak, J.D. (Unpublished).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. 1995. Notes on linkage drag in Bowman backcross derived lines of spring barley. Barley Genet. Newsl. 24:63-70.
4. Singh, R.J., and T. Tsuchiya. 1973. Allelism testing among three yellow streak mutants. Barley Genet. Newsl. 3:54-55.
5. Tsuchiya, T., and J.V. Alanko. 1976. Genetic studies of two mutations by means of primary trisomic analysis. Barley Genet. Newsl. 6:84-85.
6. Tsuchiya, T., and A. Hang. 1979. Telotrisomic analysis of yst3 and i in barley. Barley Genet. Newsl. 9:106-108.
7. Tsuchiya, T., and A. Shahla. 1982. Primary trisomic analysis of the gene yst3 in barley. Barley Genet. Newsl. 12:31-32.
Prepared:
Tsuchiya, T. 1984. Barley Genet. Newsl. 14:99.
Revised:
J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:409.
J.D. Franckowiak. 2014. Barley Genet. Newsl. 44:163.