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| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
|---|
| 0 | GSHO 2504 | eam10.m | Hordeum vulgare L. subsp. vulgare | North Dakota, United States | NSGC |  | | 1996 | DONATED | 04/1996 | | | | | Genetic material | In winter nurseries at Cuidad Obregon, Sonora, Mexico and Davis, California, USA, plants of Super Precoz 2H head about 11 days earlier than lines with the genes eam7.g or eam8.k for photoperiod insensitivity from Atsel and Sv Mari, respectively. The eam10.m gene appears to suppress expression of the eam7.g and eam8.k genes. Plants expressing eam10.m become chlorotic (yellow green) under photothermal stress. Zeaxanthin increases at the expense of chlorophyll and other pigments. The chlorotic appearance is similar to that observed in plants homozygous for other recessive genes for early maturity (eam7, eam8, and eam9). Inheritance: Monofactorial recessive. Located in chromosome 3HL, about 2.0 + 5.8 cM from the Est1-Est4 (esterase 1, esterase 4) locus. Previous nomenclature and gene symbolization: Early maturity sp=easp. Mutational events: eam10.m in Super Precoz 2H plus a dominant maturity enhancer; eam10.m in Amber Nude without the enhancer. Mutant used for description and seed stocks: eam10.m in Super Precoz 2H (GSHO 2504); eam10.m in Amber Nude (GSHO 2505). | 1545060 | GSHO 2504 |