International Database for Barley Genes and Barley Genetic Stocks
BGS 346, Yellow streak 5, yst5
Stock number: BGS 346
Locus name: Yellow streak 5
Locus symbol: yst5
Previous nomenclature and gene symbolization:
Monofactorial recessive (1, 2).
Located in chromosome 7HS (1); yst5.e is associated with SNP markers 1_0327 to 1_1348 (positions 55.54 to 96.67 cM) in 7H bins 05 to 07 of the Bowman backcross-derived line BW928 (1). Previously yst5 was located in chromosome 5HL (2); based on linkage drag with the raw1 (smooth awn 1) locus (2).
Beginning with the second leaf, emerging leaf blades are very pale yellow-green in color. As the leaf blade matures, fine vertical green streaks develop. More greening of the leaf blade occurs along the midrib than near the margins. This pattern of greenish streaks in a yellow background persists until heading; then, leaf blades gradually develop a normal green in color (2). The yst5 plants of the Bowman backcross-derived line for yst5.e, BW928, varied from 15% shorter to equal height compared to Bowman. BW928 headed up to three days later in some environments. Kernels were slightly lighter in some trials and grain yields varied from 3/4 those of Bowman to similar (2).
Origin of mutant:
A spontaneous mutant isolated from a Bowman/ant10.30 cross (2).
yst5.e (GSHO 2501) in Bowman/ant10.30 (2).
Mutant used for description and seed stocks:
yst5.e (GSHO 2501) in Bowman/ant10.30; yst5.e in Bowman (PI 483237)*3 (GSHO 2366); yst5.e in Bowman*7 (BW928, NGB 22357).
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 Franckowiak, J.D. (Unpublished).
J.D. Franckowiak. 2002. Barley Genet. Newsl. 32:107.
J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:130.