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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 598 | des7.j | Hordeum vulgare L. subsp. vulgare | Arizona, United States | NSGC |  | | 1994 | DEVELOPED | | | | | | Genetic material | The chromosomes are paired during the pachytene stage of microsporogenesis, but they undergo desynapsis during diplotene. The degree of desynapsis is d=6.1 + 2.6, ranging from 7 ring bivalents (d=0) to 14 univalents (d=14). Many univalents split l longitudinally during anaphase I. Lagging chromosomes and micronuclei are observed frequently at Telophase I. Microspore quartets contain an average of 3.0 micronuclei per tetrad with a range of 0 to 13. Female fertility is about 33%, and about 13% of the selfed seeds are trisomics. Inheritance: Monofactorial recessive. Located in chromosome 2H. Previous nomenclature and gene symbolizaiton: None. Mutational events: des7.j in Betzes (GSHO 598). Mutant used for description and seed stocks: des7.j in Betzes (GSHO 598). | 1512243 | GSHO 598 |
| 1 | GSHO 592 | des1.a | Hordeum vulgare L. subsp. vulgare | Minnesota, United States | NSGC |  | | 1994 | DEVELOPED | | | | | | Genetic material | The name long chromosomes refers to the frequent occurrence of rod bivalents at metaphase I. The chromsomes are paired during pachytene, but undergo desynapsis during diplotene. The degree of desynapsis is d=2.6+1.6 ranging from 7 ring bivalents (d=9) to 5 rod bivalents plus 4 univalents (d=9). Lagging chromosomes and micronuclei are observed frequently at Telophase I. Microspore tetrads contain an average of 0.3 micronuclei per tetrad with a range of 0 to 6. Ovule fertility is about 45%. Inheritance: Monofactorial recessive. Located in chromosome 7H[1]. Previous nomenclature and gene symbolization: Long chromosome=lc. Mutational events: des1.a in Mars; des1.v in Freja (CIho 7130). Mutant used for description and seed stocks: des1.a in Mars (GSHO 592). | 1512385 | GSHO 592 |
| 2 | GSHO 593 | des2.b | Hordeum vulgare L. subsp. vulgare | Manitoba, Canada | NSGC |  | | 1994 | DEVELOPED | | | | | | Genetic material | Synapsed homologous chromosome disjoin precociously because of an apparent lack of chiasmata. The chromosomes are paired during pachytene and undergo desynapsis during diplotene. The degree of desynapsis is d=6.0+3.3 with a range from 7 ring bivalents (d=0) to 2 rod bivalents plus 10 univalents (d=12). Lagging chromosomes and micronuclei are observed frequently at Telophase I. Microspore tetrads contain an average of 1.8 micronuclei per tetrad and a range of 0 to 7. Ovule fertility is about 1% and highly variable from spike to spike on the same plant. The very low fertility trait occurred infrequently in the F2 progeny from the cross to Bowman, but about 1/4 the plants had about 60% seed set. Inheritance: Monofactorial recessive. Located in chromosome 3H. Previous nomenclature and gene symbolization: Desynaptic chromosomes=ds. Mutational events: des2.b in Husky. Mutant used for description and seed stocks: des2.b in Husky (GSHO 593). | 1512429 | GSHO 593 |
| 3 | GSHO 595 | des4.d | Hordeum vulgare L. subsp. vulgare | Arizona, United States | NSGC |  | | 1994 | DEVELOPED | | | | | | Genetic material | The chromosome are paired during pachytene and undergo desynapsis during diplotene. The degree of desynapsis is d=3.3+2.2 with a range from 7 ring bivalents (d=0) to 3 rod bivalents plus 8 univalents (d=11). Many of the univalents split l longitudinally during Anaphase I, and lagging chromosomes and micronuclei are observed frequently at Telophase I. Mircrospore tetrads contain an average of 1.0 micronuclei per tetrad and a range of 0 to 10. Ovule fertility is about 18%. Inheritance: Monofactorial recessive. Located in chromosome 7H[1]. Previous nomenclature and gene symbolization: None. Mutational events: des4.d, des4.h in Betzes; des4.z, des4.aa, des4.ab, des4.ac, des4.ad, des4.ae, des4.af, des4.ag in Klages (CIho 15487); all the Klages mutants may be identical because they were isolated from the same field. Mutant used for description and seed stock: des4.d in Betzes (GSHO 595). | 1512410 | GSHO 595 |
| 4 | GSHO 596 | des5.e | Hordeum vulgare L. subsp. vulgare | Arizona, United States | NSGC |  | Not Available | 1994 | DEVELOPED | | | | | | Genetic material | The chromosomes are paired during pachytene and undergo desynapsis during diplotene. The degree of desynapsis is 11.1+2.6 ranging from 7 ring bivalents (d=0) to 14 univalents (d=14). Many univalents split longitudinally during Anaphase I. Lagging chromosomes and micronuclei are observed frequently at Telophase I. Microspore quartets contain an average of 4.5 micronuclei per quartet with a range of 0 to 18. Ovule fertility is about 7%. When crossed with non-allelic desynaptic lines, the F1's frequently show a low degree of desynapsis (up to 3 rod bivalents per cell). Inheritance: Monofactorial recessive. Located in chromosome 7H [1]. Previous nomenclature and gene symbolization: None. Mutational events: des5.e, des5.f, des5.g in Betzes. Mutant used for description and seed stocks: des5.e in Betzes (GSHO 596). | 1512195 | GSHO 596 |