International Database for Barley Genes and Barley Genetic Stocks

BGS 143, Shrunken endosperm xenia 8, sex8

BGN  43:90 Export to PDF
Stock number: BGS 143
Locus name: Shrunken endosperm xenia 8
Locus symbol: sex8

Previous nomenclature and gene symbolization:

Shrunken endosperm xenia-j = sex.j (3).

Inheritance:

Monofactorial recessive (3).
Located in chromosome 3HS (3); sex8.j is based on linkage drag with the btr1 (non-brittle rachis 1) locus (3); sex8.j is associated with SNP markers 2_1259 to 2_0093 (positions 69.14 to 127.914 cM) in 3H bins 05 to 08 and with SNP markers 2_0653 to 2_117 (positions 199.04 to 203.85 cM) in 5H bin 11 of the Bowman backcross-derived line BW848 (1).

Description:

After the hard dough stage, the grain develops a slight depression in the dorsal or lemma side. In plants heterozygous for sex8.j, a xenia pattern of expression is observed. Seeds with a small depression in the dorsal side are homozygous for sex8 (2). Kernels of the Bowman backcross-derived line for sex8.j, BW848, were 10 to 15% lighter than those of Bowman. Grain yields of BW848 were about 3/4 those of Bowman (2).
No images

Origin of mutant:

A spontaneous mutant in a selection from cross I89-633 (lax-69/3*Bowman) (2).

Mutational events:

sex8.j (GSHO 2471) in I89-633-1 (2, 3); the origin could be from the Bonus (NGB 14657, PI 189763) mutant lax.69 (NGB 116402).

Mutant used for description and seed stocks:

sex8.j (GSHO 2471) in I89-633-1; sex8.j in Bowman (PI 483237)*6 (GSHO 1945); sex8.j in Bowman*7 (BW848, NGB 22284).

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 Franckowiak, J.D. (Unpublished).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.

NGB number url references to Nordic Baltic Genebankes Information System (GENBIS):

  1. NGB 116402 (https://www.nordic-baltic-genebanks.org/gringlobal/accessiondetail?accid=NGB 116402)

Prepared:

J.D. Franckowiak. 2002. Barley Genet. Newsl. 32:93.

Revised:

J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:90.
 


CLOSE