International Database for Barley Genes and Barley Genetic Stocks

BGS 629, Mottled leaf 6, mtt6

BGN  45:228 Export to PDF
Stock number: BGS 629
Locus name: Mottled leaf 6
Locus symbol: mtt6

Previous nomenclature and gene symbolization:

None.

Inheritance:

Monofactorial recessive (2).
Located in chromosome 7HS (1); mtt6.g is associated with SNP markers 1_0851 to 2_1437 (positions 17.32 to 20.56 cM) in 7H bin 02 of the Bowman backcross-derived line BW604 (1).

Description:

When grown in the greenhouses, the mtt6.g seedlings are slightly pale green in color and develop a white necrotic region partially across the blade of the first leaf. Occasionally white necrotic blotches or region develop in subsequent leaf blades. Plants are taller than normal sibs and remain a slightly pale shade of green until maturity. Plant vigor appears normal (2). Plants of the Bowman backcross-derived line for mtt6.g, BW604, headed 1 to 4 days later than Bowman plants. BW604 plants varied from slightly taller to shorter, had slightly longer peduncles and larger leaf blades, and had 2 to 4 more kernels per spike. Compared to Bowman, kernels of BW604 were 5 to 10% lighter and grain yields varied from 30 to 95% of those for Bowman (2).

Origin of mutant:

A spontaneous mutant in selection ND6809 from a ND2654-31/Karl cross (2).

Mutational events:

mtt6.g (GSHO 2411) in ND6809-1 (2).

Mutant used for description and seed stocks:

mtt6.g (GSHO 2411) in ND6809; mtt6.g in Bowman (PI 483237)*8 (GSHO 2311, BW604, NGB 22170).

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 Franckowiak, J.D. (Unpublished).

Prepared:

J.D. Franckowiak. 2002. Barley Genet. Newsl. 32:130.
J.D. Franckowiak. 2015. Barley Genet. Newsl. 45:228.
 


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