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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 908 | wax1.a | Hordeum vulgare L. subsp. vulgare | Japan | NSGC |  | | 1995 | DEVELOPED | | | | | | Genetic material | The endosperm contains primarily amylopectin, chains of alpha-(1-4) D-glucopyranose units branched through alpha-(1-6) linkages, and has a waxy texture. The starch content is reduced, the amount of sucrose and maltose is increased significantly, and more amylodextrin may be deposited. The starch in the endosperm and pollen grains has reddish-brown reaction to iodine. The estimated spontaneous reversion to normal for six wax1 alleles ranged from 1.9 to 5.6 x 10-5, and the intralocus recombination frequencies ranged from 0.4 to 194x10-5. Instability of the wax1.a allele from R.I Wolfe's Multiple Recessive Stock is induced by crossing to mutant line 152. Inheritance: Monofactorial recessive. Located in chromosome 7HS [1S], about 1.5 cM proximal from the fch12 (chlorina seedling 12) locus, adn about 12.6 cM proximal from the Run1 (reaction to Ustilago nuda 1) locus. Previous nomenclature and gene symbolization: Waxy endosperm=Wx. High amylopectin endosperm=glx. Mutational events: wax1.a in Murasaki Mochi (GSHO 84); wax1.b, wax1.c, wax1.d, wax1.e, wax1.f and wax1.g in Steptoe (CIho 15229). Mutant used for description and seed stocks: wax1.a in Odebrucker (CIho 4666)*10 (Waxy Oderbrucker, CIho 7563, GSHO 908); wax1.a from R.I. Wolfe's Multiple Recessive Stock in Bowman (PI 483237)*8 (GSHO 1828). | 1513700 | GSHO 908 |
| 1 | GSHO 1324 | Run1.a | Hordeum vulgare L. subsp. vulgare | Colorado, United States | NSGC |  | | 1995 | DONATED | 05/1994 | | | | | Genetic material | A dominant gene which controls a resistant reaction to "non-Trebi-attacking" cultures of Ustilago nuda and to cultures capable of infecting the "Jet" type of resistance. Inheritance: Monofactorial dominant. Located in chromosome 7HS[1S], about 2.0 cM proximal from the Rpg1 (reaction to Puccinia graminis 1) locus, about 12.7 cM distal from the wax (waxy endosperm) locus, and about 15.1 cM distal from the nud (naked caryopsis) locus. Previous nomenclature and gene symbolization: Resistance to Ustilago nuda=Un. Mutational events: Run1.a in Trebi. Mutant used for description and seed stocks: Run1.a in Trebi (GSHO 1324). | 1514223 | GSHO 1324 |
| 2 | GSHO 187 | Rpg2.b | Hordeum vulgare L. subsp. vulgare | Wisconsin, United States | NSGC |  | | 1994 | DEVELOPED | | | | | | Genetic material | Moderate resistance to some races of Puccinia graminis f sp tritici is conferred by the Rpg2.b gene. Percent stem and leaf sheath infection and lesion size in adult plants are reduced compared with susceptible plants under field conditions. Patterson used linkage data to demonstrate that the Rpg2 locus differs from the Rpg1 locus. Inheritance: Monofactorial dominant. Location is unknown. Previous nomenclature and gene symbolization: Resistance to Puccinia graminis tritici=T2. Resistance to Puccinia graminis Pers f sp tiritici Eriks and E Henn = Rpg2b. Mutational events: Prg2.b in Hietpas. Mutant used for description and seed stocks: Rpg2.b in Hietpas 5 (GSHO 187). | 1510786 | GSHO 187 |
| 3 | GSHO 701 | Rpg1.a | Hordeum vulgare L. subsp. vulgare | Wisconsin, United States | NSGC |  | | 1994 | DEVELOPED | | | | | | Genetic material | The dominant allele at the Rpg1 locus confers moderate resistance to most races of Puccinia graminis f sp tritici. Lesion size and percent stem and leaf sheath infection in adult plants is reduced compared with susceptible plants under field conditions. At high temperatures (greater than 20 degrees C), differentiation of seedling reaction types is observed with race 56 (10). These differences correlate with adult plant reactions better than at lower temperatures. Differences among cultivars indicate that a modifier of the Rpg1.e allele exists. Plants with Rpg1 gene show a susceptible reaction to pathotype QCC of Puccinia graminis f sp tritici and to Puccinia graminis f sp secalis. Molecular markers closely linked to the three different sources of the Rpg1 region gene suggest that they originated independently. Synteny of the Rpg1 region of chromosome 5HS to the short arm or rice chromosome 6 was demonstrated. Inheritance: Monofactorial dominant. Located in chromosome 7HS [1S], about 13.2 cM distal to the brh1 (brachytic 1) locus, about 9.2 cM distal from the Run1 (reaction to Ustilago nuda 1) locus, about 1.4 cM distal from the Run1 locus, and 0.7 cM from RFLP marker ABG077. Previous nomenclature and gene symbolization: Resistance to Puccinia graminis tritici=T. Resistance to Puccinia graminis Pers f sp tritici Eriks and E Henn. = Rpg1a. Mutational events: Rpg1.a in Chevron; Rpg1.e in Peatland, Rpg1.f in Kindred. Mutant used for description and seed stocks: Rpg1.a in Chevron (GSHO 701); Rpg1.a in 80-TT-29 (CIho 16129); Rpg1.e from Peatland in Bowman (PI 483237). | 1514437 | GSHO 701 |