International Database for Barley Genes and Barley Genetic Stocks
BGS 28, Erectoides-a, ert-a
Stock number: BGS 28
Locus name: Erectoides-a
Locus symbol: ert-a
Previous nomenclature and gene symbolization:
Erectoides-6 = ert-6 (3).
Inheritance:
Monofactorial recessive (5).
Located in chromosome 7HS (4, 10, 11); ert-a.6 is about 11.4 cM distal from the cer-f (eceriferum-f) locus (8, 9, 12, 13, 14); ert-a.6 is about 11.7 cM distal from the nud1 (naked caryopsis 1) locus (8, 9, 11); ert-a.6 is associated with SNP markers 1_0394 to 2_0103 (positions 107.44 to 142.55 cM) in 7H bins 07 to 08 of the Bowman backcross-derived line BW303 (1), likely in 7H bin 07, but in the long arm.
Located in chromosome 7HS (4, 10, 11); ert-a.6 is about 11.4 cM distal from the cer-f (eceriferum-f) locus (8, 9, 12, 13, 14); ert-a.6 is about 11.7 cM distal from the nud1 (naked caryopsis 1) locus (8, 9, 11); ert-a.6 is associated with SNP markers 1_0394 to 2_0103 (positions 107.44 to 142.55 cM) in 7H bins 07 to 08 of the Bowman backcross-derived line BW303 (1), likely in 7H bin 07, but in the long arm.
Description:
Spikes of all alleles have a compact appearance caused by a reduction in rachis internode length, with rachis internode length values from 1.7 to 2.6 mm (11). The ert-a.6 allele produces plants with shorter internodes than most other ert-a alleles. Plants with an allele at the ert-a locus are 10 to 15 cm shorter than parental cultivars (6). The effects of the ert-a mutant on spike density are partially reversed by GA3 treatments (15, 16). Plants of the Bowman backcross-derived line with ert-a.6, BW303, headed slightly earlier than Bowman and were about 15% shorter. Rachis internode lengths were 2.7 vs. 4.5 mm and kernel lengths averaged 8.8 vs. 9.9 mm. The kernel weights for BW303 were about 10% less than those for Bowman and grain yields were up to 25% less than those of Bowman (2). Based on phenotypic traits SNP markers from Gull retained in BW303, ert-a.6 may be allele at the dense spike 1 (dsp1) locus (2).
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Origin of mutant:
An X-ray induced mutant in Gull (NGB 1480, CIho 1145, GSHO 466) (5, 6).
Mutational events:
ert-a.6 (NGB 112609, GSHO 468), -a.11 (NGB 112609) in Gull (NGB 1480), -a.13 (NGB 112614, GSHO 215) in Maja (NGB 8815, PI 184884), -a.19 (NGB 112621) -a.21 (NGB 112622),-a.21 (trans) (NGB 112623), -a.23 (NGB 112624), -a.28 (NGB 112628) in Bonus (NGB 14657, PI 189763) (2, 3, 6), -a.29 (NGB 112629) in Maja (6); ert-a.36 (NGB 112637), -a.38 (NGB 112638), -a.49 (NGB 112648) in Bonus (4, 5); ert-a.77 (NGB 112676) in Bonus (5); ert-a.99 (NGB 112698) in Bonus (7); ert-a.131 (NGB 112730), -a.147 (NGB 112746), -a.160h (NGB 112759) in Bonus (11); ert-a.160l (NGB 112760), -a.161 (NGB 112761) in Bonus (7); ert-a.166 (NGB 112766) in Bonus, -a.315 (NGB 112830), -a.316 (NGB 112831) in Foma (NGB 14659, CIho 11333) (11); ert-a.323 (NGB 112838) in Foma (7); ert-a.334 (NGB 112849), -a.340b (NGB 112856), -a.341 (NGB 112857), -a.343 (NGB 112859) in Foma (11); ert-a.348 (NGB 112864) in Foma (7); ert-a.350 (NGB 112866), -a.364 (NGB 112880), -a.368 (NGB 112834), -a.378 (NGB 112894), -a.388 (NGB 112903), -a.406 (NGB 112922), -a.433 (NGB 112949), -a.481 (NGB 112997), -a.494 (NGB 113010) in Foma (11); ert-a.1180 (NGB 114058), -a.1187 (NGB 114066), -a.1193 (NGB 114072), -a.1197 (NGB 114076), -a.1203 (NGB 114082), -a.1210 (NGB 114090), -a.1219 (NGB 114099) in Bonus (7).
Mutant used for description and seed stocks:
ert-a.6 in Gull (NGB 112609, GSHO 468); ert-a.6 in Bowman (PI 483237)*8 (GSHO 1844, BW303, NGB 20585).
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. Gustafsson, Å. 1947. Mutations in agricultural plants. Hereditas 33:1-100.
4. Hagberg, A. 1958. Cytogenetik einiger Gerstenmutanten. Züchter 28:32-36.
5. Hagberg, A., Å. Gustafsson, and L. Ehrenberg. 1958. Sparsely contra densely ionizing radiations and the origin of erectoid mutants in barley. Hereditas 44:523-530.
6. Hagberg, A., N. Nybom, and Å. Gustafsson. 1952. Allelism of erectoides mutations in barley. Hereditas 38:510-512.
7. Lundqvist, U. (Unpublished).
8. Persson, G. 1969. An attempt to find suitable genetic markers for the dense ear loci in barley I. Hereditas 62:25-96.
9. Persson, G. 1969. An attempt to find suitable genetic markers for the dense ear loci in barley II. Hereditas 63:1-28.
10. Persson, G., and A. Hagberg. 1962. Linkage studies with the erectoides loci. Barley Newsl. 5:46-47.
11. Persson, G., and A. Hagberg. 1969. Induced variation in a quantitative character in barley. Morphology and cytogenetics of erectoides mutants. Hereditas 61:115-178.
12. Søgaard, B. 1971. Linkage studies on eceriferum mutants in barley. Barley Genet. Newsl. 1:41-47.
13. Søgaard, B. 1974. The localization of eceriferum loci in barley. III. Three point tests of genes on chromosome 1 in barley. Hereditas 76:41-48.
14. Søgaard, B. 1977. The localization of eceriferum loci in barley. V. Three point tests of genes on chromosome 1 and 3. Carlsberg Res. Commun. 42:67-75.
15. Stoy, V., and A. Hagberg. 1958. Effects of gibberellic acid on erectoides mutations in barley. Hereditas 44:516-522.
16. Stoy, V., and A. Hagberg. 1967. Effects of growth regulators on ear density mutants in barley. Hereditas 58:359-384.
2. Franckowiak, J.D. (Unpublished).
3. Gustafsson, Å. 1947. Mutations in agricultural plants. Hereditas 33:1-100.
4. Hagberg, A. 1958. Cytogenetik einiger Gerstenmutanten. Züchter 28:32-36.
5. Hagberg, A., Å. Gustafsson, and L. Ehrenberg. 1958. Sparsely contra densely ionizing radiations and the origin of erectoid mutants in barley. Hereditas 44:523-530.
6. Hagberg, A., N. Nybom, and Å. Gustafsson. 1952. Allelism of erectoides mutations in barley. Hereditas 38:510-512.
7. Lundqvist, U. (Unpublished).
8. Persson, G. 1969. An attempt to find suitable genetic markers for the dense ear loci in barley I. Hereditas 62:25-96.
9. Persson, G. 1969. An attempt to find suitable genetic markers for the dense ear loci in barley II. Hereditas 63:1-28.
10. Persson, G., and A. Hagberg. 1962. Linkage studies with the erectoides loci. Barley Newsl. 5:46-47.
11. Persson, G., and A. Hagberg. 1969. Induced variation in a quantitative character in barley. Morphology and cytogenetics of erectoides mutants. Hereditas 61:115-178.
12. Søgaard, B. 1971. Linkage studies on eceriferum mutants in barley. Barley Genet. Newsl. 1:41-47.
13. Søgaard, B. 1974. The localization of eceriferum loci in barley. III. Three point tests of genes on chromosome 1 in barley. Hereditas 76:41-48.
14. Søgaard, B. 1977. The localization of eceriferum loci in barley. V. Three point tests of genes on chromosome 1 and 3. Carlsberg Res. Commun. 42:67-75.
15. Stoy, V., and A. Hagberg. 1958. Effects of gibberellic acid on erectoides mutations in barley. Hereditas 44:516-522.
16. Stoy, V., and A. Hagberg. 1967. Effects of growth regulators on ear density mutants in barley. Hereditas 58:359-384.
Prepared:
U. Lundqvist and J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:74-75.
Revised:
U. Lundqvist and J.D. Franckowiak. 2011. Barley Genet. Newsl. 41:76-77.
