International Database for Barley Genes and Barley Genetic Stocks

BGS 390, Desynapsis 11, des11

BGN  44:132 Export to PDF
Stock number: BGS 390
Locus name: Desynapsis 11
Locus symbol: des11

Previous nomenclature and gene symbolization:

Desynapsis r = des,,r (3, 5).

Inheritance:

Monofactorial recessive (3, 5).
Located in chromosome 3HL (1); des11.r is associated with SNP markers 2_0931 to 2_0168 (positions 104.39 to 173.82 cM) in 3H bins 07 to 11 of the Bowman backcross-derived line BW231 (1).

Description:

The chromosomes are paired during pachytene and undergo desynapsis during diplotene and diakinesis. The average degree of desynapsis is 5.7, ranged from 6 ring bivalents plus one rod bivalent (d = 1) to 2 rod bivalents plus 10 univalents (d = 12). Ovule fertility is about 40% (4). When crossed with the non-allelic desynaptic mutants des4.d and des5.e, the F1's frequently showed a low degree of desynapsis (up to 3 rod bivalents). When crossed with des7.j, the F1's show a low to medium degree of desynapsis (d = 1.8), ranging from 7 ring bivalents (d = 0) to 4 ring bivalents plus 4 rod bivalents (d = 5), and there are lagging chromosomes and micronuclei at telophase I (4). Plants of the Bowman backcross-derived line for des11.r, BW231, were slightly taller than Bowman and kernels often weighed slightly more. Grain yields of BW231 were 20% lower than those for Bowman (2).
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Origin of mutant:

A spontaneous mutant in Betzes (PI 129430) (5).

Mutational events:

des11.r (GSHO 602) in Betzes (PI 129430) (3, 5).

Mutant used for description and seed stocks:

des11.r (GSHO 602) in Betzes; des11.r in Bowman (PI 483237)*6 (BW231, NGB 22058).

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 Franckowiak, J.D. (Unpublished).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. Hernandez-Soriano, J.M., and R.T. Ramage. 1973. Coordinator's report: Desynaptic genes. Barley Genet. Newsl. 3:91.

4. Hernandez-Soriano, J.M., and R.T. Ramage. 1974. BGS 390, Normal vs. desynapsis 11, des11. Barley Genet. Newsl. 4:139.

5. Ramage, R.T., and J.M. Hernandez-Soriano. 1972. Desynaptic genes in barley. Barley Genet. Newsl. 2:65-68.

Prepared:

J.M. Hernandez-Soriano and R.T. Ramage. 1974. Barley Genet. Newsl. 4:139.

Revised:

J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:338.
J.D. Franckowiak. 2014. Barley Genet. Newsl. 44:132.
 


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