International Database for Barley Genes and Barley Genetic Stocks
BGS 652, Yellow leaf 1, ylf1
Stock number: BGS 652
Locus name: Yellow leaf 1
Locus symbol: ylf1
Previous nomenclature and gene symbolization:
Monofactorial recessive (2).
Located in chromosome 7HS (1); ylf1.a is associated with SNP markers 1_0576 to 2_0790 (positions 54.30 to 73.96 cM) in 3H bins 05 to 06 of the Bowman backcross-derived line BW922 (1).
Mutant plants show a gradual yellowing or loss of chlorophyll starting with the margins of leaf blades. Dying or necrosis of the leaf blade or its margins is not observed. The leaves gradually become a yellowish or golden in color with midrib region remaining green. Expression of ylf1.a gene is variable and is dependent on light intensity, temperature, moisture stress, and the age of the leaf blade (2). Mutant expression is often better under low light conditions in the greenhouse. High temperatures can induce yellowing of the leaf blade margins in seedlings; however, yellowing is often not expressed until after heading (2). The Bowman backcross-derived line for the ylf1.a, BW922, was slightly shorter and had slightly lighter kernels than Bowman. Grain yields were occasionally slightly lower than those of Bowman (2).
Origin of mutant:
An X-ray induced mutant in Villa (PI 399506) (3).
ylf1.a (6002) in Villa (PI 399506) (2, 3).
Mutant used for description and seed stocks:
ylf1.a in Villa; ylf1.a in Bowman (PI 483237)*8 (BW922, NGB 22351).
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 Franckowiak, J.D. (Unpublished).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. Gaul, H. 1986. (Personal communications).
J.D. Franckowiak. 2005. Barley Genet. Newsl. 35:210.
J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:175.