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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 | | |
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| 0 | GSHO 153 | vrs1.c | Hordeum vulgare L. subsp. vulgare | Colorado, United States | NSGC |  | | 1994 | DONATED | 05/1994 | | | | | Genetic material | The spike has long awns on the lemma of the central spikelet and awn-like appendages on the lemma of the lateral spikelets. Lateral spikelets have perfect flowers and complete fertility. The lr trait is expressed only in six-rowed barley, and heterozygotes have a short awn on the lemma of lateral spikelets. Since recombination with neither vrs1.a(v) nor Vrs1.b (V) alleles was observed, the lr or vrs1.c phenotype is likely controlled by an allele at the vrs1 locus. The Bowman backcross- derived line for the vrs1.c gene has short, stiff awns on the central spikelets (about 1/3 normal length) and no awns on the lateral spikelets.Inheritance: An incomplete dominant in the multiple allelic series at the vrs1 (six-rowed spike 1) locus. Located in chromosome 2HL, about 15.4 cM distal from the Gth (toothed lemma) locus, and 26.5 cM distal from the eog (elongated outer glume) locus. Previous nomenclature and gene symbolization: Reduced lateral spikelet appendage on the lemma=lr. Reduced lateral spikelet appendage on the lemma=vlr. Mutational events: vrs1.c or lr in Hordeum intermedium var Nudihaxtoni. Mutant used for description and seed stocks: vrs1.c or lr in Hordeum intermedium var Nudihaxtoni (PI 32368, GSHO 153); vrs1.c in Bowman (PI 483237)*7(GSHO 1908). | 1510717 | GSHO 153 |
| 1 | GSHO 309 | Gth1.a | Hordeum vulgare L. subsp. vulgare | Colorado, United States | NSGC |  | | 1994 | DONATED | 05/1994 | | | | | Genetic material | Large teeth or barbs are present on the upper part of lateral lemma nerves. Ubisch distinguished three sizes of teeth, including one that could be seen only with magnification. She reported that one gene pair controlled the presence and absence of large teeth and one or two other pairs of genes were responsible for less developed teeth. Wexelsen observed segregation for one pair of factors. Inheritance: Monofactorial dominant. Located in chromosome 2HL, about 15.4 cM proximal from the vrs1 (six-rowed spike 1) locus. Previous nomenclature and gene symbolization: Toothed lemma=G. Mutational events: Ght1.a in Machine (CIho 4982). Mutant used for description and seed stocks: Gth1.a in Machine (GSHO 309); Gth1.a in Bowman (PI 483237); gth1.b from ND11894 in Bowman*3 (GSHO 1897). | 1512164 | GSHO 309 |
| 2 | GSHO 346 | Vrs1.d | Hordeum vulgare L. subsp. vulgare | Colorado, United States | NSGC |  | | 1994 | DONATED | 05/1994 | | | | | Genetic material | Plants homozygous for Vrs1.d have more lateral kernels than those with Vrs1.b (V), which is the common allele in two-rowed barley. Homozygosity for the Vrs1.d allele and the int-c.b (formally i) allele at the int-c (intermedium-c) locus prevents the development of ovules and awns in lateral spikelets. The Vrs1.d allele interacts with the Int-c.a (formally l) allele to cause development of a few fertile lateral spikelets. Presence of the Int-c.h (formally lh) allele contributes to a greater number of lateral kernels than Int-c.a. Inheritance: A partially dominant allele in the multiple allelic series at the vrs1 (six-rowed spike 1) locus. Located in chromosome 2HL, about 15.4 cM proximal from the Gth (toothed lemma locus, and 30.5 cM f from the eog (elongated outer glume) locus. Previous nomenclature and gene symbolization: Two-rowed barley of Hordeum distichon=Vd. Renamed Vrs1.d based on allelism tests. Mutational events: Vrs1.d or Vd in Svanhals (PI 5474). Mutant used for description and seed stock: Vrs1.d or Vd in Svanhals (GSHO 346). | 1512104 | GSHO 346 |
| 3 | GSHO 684 | Vrs1.t | Hordeum vulgare L. subsp. vulgare | Utah, United States | NSGC |  | | 1994 | DEVELOPED | | | | | | Genetic material | Plants homozygous for Vrs1.t (Vt) allele always have a deficiens phenotype regardless of the allele present at the int-c (intermedium-c) locus in chromosome 4. Deficiens is characterized by the extreme reduction in size of the lateral spikelet. The Vrs1.t allele in Engleawnless does not recombine with the Lks1.a allele at the Lks1 (awnless) locus because a short paracentric inversion is present in this stock. Inheritance: The Vrs1.t allele is the most dominant allele in the multiple allelic series at the vrs1 (six-rowed spike 1) locus, but interacts as an incomplete dominant with some alleles. Located in chromosome 2HL, about 15.4 cM distal from the Gth (toothed lemma) locus, and 30.5 cM distal from the eog (elongated outer glume) locus. Previous nomenclature and gene symbolization: Hordeum deficiens=Vt. Renamed Vrs1.t based on allelism tests. Mutational events: Vrs1.t or Vt in White Deficiens (CIho 7316). Mutant used for description and seed stocks: Vrs1.t or Vt in White Deficiens (GHSO 684); Vrs1.t in Bowman (PI 483237)*8(GSHO 1909). | 1512235 | GSHO 684 |