International Database for Barley Genes and Barley Genetic Stocks
BGS 726, Many-noded dwarf 7, mnd7
Stock number: BGS 726
Locus name: Many-noded dwarf 7
Locus symbol: mnd7
Previous nomenclature and gene symbolization:
Monofactorial recessive (3).
Location is unknown; mnd7.h is associated with retained SNP markers in large segments of chromosomes 1H, 3H, 4H, and 5H of Bowman backcross-derived line BW517 (1).
The mnd7.h plants are short (1/2 normal height) with many elongated culm internodes, small thin leaves, and very short spikes. Phenotypically the mnd7.h plants appear similar to many noded dwarf 1 (mnd1.a) (BGS 519) plants (3); however branching of the culm at the peduncle node was not observed (2). SNP markers in the region of chromosome 2H associated with presence of mnd1.a were not retained in BW517 (1).
Origin of mutant:
A fast neutron induced mutant in Steptoe (CIho 15229) (3).
mnd7.h (FN233, GSHO 3686) in Steptoe (CIho 15229) (3).
Mutant used for description and seed stocks:
mnd7.h (FN233, GSHO 3686) in Steptoe; mnd7.h in Bowman (PI 483237)*3 (BW517, NGB 20745).
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 Franckowiak, J.D. (Unpublished).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. Kleinhofs, A. (Unpublished).
A. Kleinhofs and J.D. Franckowiak. 2013. Barley Genet. Newsl. 43:221.