International Database for Barley Genes and Barley Genetic Stocks
BGS 336, Globosum-b, glo-b
Stock number: BGS 336
Locus name: Globosum-b
Locus symbol: glo-b
Previous nomenclature and gene symbolization:
None.
Inheritance:
Monofactorial recessive (3).
Located in chromosome 5HL (3, 4); glo-b.1001 is over 31.9 cM proximal from the ari-e (breviaristatum-e) locus (7). glo-b.1002 is associated with SNP markers 1_1198 to 2_1244 (positions 73.70 to 91.91 cM) in 5H bins 04 to 05 of the Bowman backcross-derived line BW393, and with SNP markers 2_0715 to 2_1453 (positions 213.08 to 245.71 cM) in 2H bins 13 to 15 of BW393 (1).
Located in chromosome 5HL (3, 4); glo-b.1001 is over 31.9 cM proximal from the ari-e (breviaristatum-e) locus (7). glo-b.1002 is associated with SNP markers 1_1198 to 2_1244 (positions 73.70 to 91.91 cM) in 5H bins 04 to 05 of the Bowman backcross-derived line BW393, and with SNP markers 2_0715 to 2_1453 (positions 213.08 to 245.71 cM) in 2H bins 13 to 15 of BW393 (1).
Description:
Kernels are globe-shaped, plants are stunted (2/3 normal height), and 1000-kernel weights are low (3, 6). Plants of the Bowman backcross-derived line for glo-b.1002 (BW393) were half as tall as Bowman and headed 1 to 3 days later. Peduncle lengths for BW393 were about 1/2 normal, awns were 40% shorter, rachis internodes were shorter, 30 vs. 44 mm, and leaf blades were shorter and wider. BW393 has fewer kernels per spike than Bowman, 19 vs. 23. Kernels of BW393 were shorter and lighter, 35 vs. 56 mg, test weight was about 20% lower, and grain yields were 50 to 80% lower (2).
 spike to the left compared with normal Bowman'))
 tiller with bent basal rachis internode'))
 seedlings to the left compared with normal Bowman'))
 plot overview'))
 grain to the left compared with one normal Bowman; the upper row grain with awns, the lower row grain without awns'))
Origin of mutant:
An X-ray induced mutant in Villa (PI 399506) (3, 4).
Mutational events:
glo-b.1001 (1345/72, GSHO 1327) in Villa (PI 399506), glo-b.1002 (916/65, GSHO 1326) in Donaria (PI 161974) (3, 5); glo-b.1005 (859/74) in Villa (4, 7); glo-b.1007 (1296/65) in Donaria (3, 5); glo-b.1011 (1786/67) in Proctor (PI 280420) (6); glo-b.1012 (1055/74) in Villa (7).
Mutant used for description and seed stocks:
glo-b.1002 (GSHO 1326) in Donaria; glo-b.1002 in Bowman (PI 483237, NGB 22812)*7 (GSHO 2095, BW393, NGB 20631).
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. Fischbeck, G., and H. Häuser. 1976. Research notes. Barley Genet. Newsl. 6:28-29.
4. Häuser, J., and G. Fischbeck. 1976. Untersuchungen zur Lokalisierung einiger Mutationen von Gerste (Hordeum sativum). Z. Pflanzenzücht. 77:269-280.
5. Häuser, H., and G. Fischbeck. 1979. Genetic analysis of some induced mutants. Barley Genet. Newsl. 9:26-27.
6. Häuser, H., and G. Fischbeck. 1980. Genetic analysis of induced mutations. Barley Genet. Newsl. 10:30-31.
1. Häuser, J., A. Jahoor, and G. Fischbeck. 1988. Localization of induced mutants for globe shaped grains. Barley Genet. Newsl. 18:54-58.
2. Franckowiak, J.D. (Unpublished).
3. Fischbeck, G., and H. Häuser. 1976. Research notes. Barley Genet. Newsl. 6:28-29.
4. Häuser, J., and G. Fischbeck. 1976. Untersuchungen zur Lokalisierung einiger Mutationen von Gerste (Hordeum sativum). Z. Pflanzenzücht. 77:269-280.
5. Häuser, H., and G. Fischbeck. 1979. Genetic analysis of some induced mutants. Barley Genet. Newsl. 9:26-27.
6. Häuser, H., and G. Fischbeck. 1980. Genetic analysis of induced mutations. Barley Genet. Newsl. 10:30-31.
1. Häuser, J., A. Jahoor, and G. Fischbeck. 1988. Localization of induced mutants for globe shaped grains. Barley Genet. Newsl. 18:54-58.
Prepared:
J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:284.
Revised:
J.D. Franckowiak and U. Lundqvist. 2018. Barley Genet. Newsl. 48:125-126.
