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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 98 (1987), S. 0 
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A rye-cytoplasmic tetraploid triticale was found in Fs progenies of crosses between tetraploid rye‘No 1323’and hexaploid triticale‘KT 77′. In the tetraploid triticale, two complete rye genomes and two mixed wheat genomes, consisting of the chromosomes 1A. 2A, 4A, 7A, 3B, 5B, and 6B are present. The rye cytoplasm did not affect stability of rye chromosome pairing during metaphase 1, since rye chromosomes participated in pairing irregularities just as did wheat chramosomes, even on a larger scale. The fertility of F0, plants ranged from 0 to 75.6 %, always associated with high grain shrivelling. The analyzed pairing behaviour of induced triploid hybrids from crosses between the tetraploid triticale and diploid rye indicates the presence of at least one wheat-rye translocation in one of the investigated triploid plants.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 100 (1988), S. 0 
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The original identification of the chromosomes involved in each of the lines of the act of primary trisomics of winter rye variety ‘Esto’ does not correspond with recent results of gene localization studies. Using known morphological marker genes, N-banding and test crossing with the standard translocation tester set, a more precise identification was possible. In the nomenclature of the Triticinae, the lines can be designated as follows: A = 7R; B = 5R; C = 2R; D = 3R; E = 4R; F = 6R; G = 1R.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 98 (1987), S. 0 
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Differential chromosome staining by using the Giemsa C- banding technique and test crosses have revealed rye chroma tin in the hexaploid wheat variety ‘Amigo’ which resulted from wheat crosses with the octoploid triticale ‘Gaucho’. The results demonstrated a pair of translocated wheat chromosomes involving the short arm of rye chromosome 1R and the long arm of the homoeologous wheat chromosome 1A (1Aq/1Rp translocation). The localization of the translocation breakpoint is supposed 10 be within the centromeric region.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 74 (1987), S. 820-826 
    ISSN: 1432-2242
    Keywords: Haploids ; Dihaploids ; Standard karyotype ; Meiotic configuration ; Rye
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Haploid, dihaploid and tetrahaploid rye plants of the variety ‘Petka’ have been produced to establish a homozygous genotype and karyotype. The morphology, karyotypic characteristics and the metaphase I chromosome behaviour are described demonstrating the utility of the material as a universal standard tester in rye cytogenetics. Clones of several ploidy levels are maintained by long-term in vitro sprout culture. They are available for international testing. Sexual propagation of the clones is possible using a heat treatment procedure to break the self-incompatibility of the homozygotes.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 72 (1986), S. 721-734 
    ISSN: 1432-2242
    Keywords: Nuclear cytology ; C-banding ; Chromosome nomenclature ; Gene localization ; Trisomies ; Rye
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Progress in rye karyology is reviewed with respect to chromosome structure, recognition and chromosome nomenclature. Considerable contributions have been brought about by molecular techniques which have even revealed nucleotide sequences of some of the ribosomal DNA. DNA sequence organization correlates with the distribution of major Giemsa C-band regions as well as with N-bands and the binding sites of fluorescent dyes. The several banding patterns permit the classification of rye chromosomes. The increased data and widespread application of banding analysis require a consistent system of chromosome and/or band designation. Therefore, a standard band nomenclature is proposed with reference to the recommendations of the “Paris Conference on Standardization in Human Cytogenetics”. In addition, advances in genetics are summarized and discussed. Based on the original accepted standard karyogram and banding patterns of the rye chromosomes, meanwhile, 120 genes determining several characters have been associated with individual chromosomes and/or chromosome arms, including linkage studies for about 19 arrangements. Most results were obtained using wheat-rye addition lines as well as test crosses with defined translocations. Moreover, genetical studies based on appropriate trisomic and telotrisomic material resulted in the localization of 19 genes, including their linkage relationships.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-2242
    Keywords: Repetitive DNA ; Wheat ; Rye ; Relic DNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The construction and molecular analysis of four recombinant clones — pTa1, pTa2, pTa7, and pTa8 — is described. The four clones contain different highly repeated sequences of genomic DNA from Triticum aestivum variety ‘Chinese Spring’. The wheat specificity has been determined by colony and dot blot hybridization in comparison with total rye DNA (Secale cereale variety ‘Petka’). The four clones with a variable degree of specificity were compared by sequence analysis after the recloning of wheat DNA inserts into M13 mp8. Within the sequencing data a tendency can be observed that those repeated sequences which show the highest degree of species specificity contain a significantly increased amount of GC residues.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 34 (1985), S. 361-366 
    ISSN: 1573-5060
    Keywords: Secale cereale rye ; telotrisomics ; identification ; gene location
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Seven monotelotrisomics emerged spontaneously from primary trisomics of rye cv. Esto. Analyses of karyotype, of chromosome pairing in meiosis and of Giemsa banding pattern were used to identify monotelotrisomics in rye as IRS, 1RL, 3RS, 4RS, 4RL, 6RS and 7RL. Vitality and fertility were better than in primary trisomics. The extra telocentrics were well transmitted through the female gamete. Transmission through the male gamete was in all cases less than trasmission through the female gamete.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Genetic resources and crop evolution 37 (1989), S. 163-176 
    ISSN: 1573-5109
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Sorten und Linien des hexaploiden Weizens unterscheiden sich sehr häufig durch die Präsenz reziproker chromosomaler Translokationen. Sie können in F1-Hybriden durch die Bildung von multivalenten Chromosomenkonfigurationen identifiziert werden. Unter etwa 270 analysierten Kombinationen wurden Assoziationen von 14, 24, 34, 16, 18, 14+16 und 24+16 mit unterschiedlichen Frequenzen beobachtet. Für verschiedenartige genetische und cytogenetische Experimente ist die Kenntnis über das Vorkommen derartiger Strukturaberrationen erforderlich. Es wurde daher eine Liste verfügbarer Literaturdaten zusammengestellt, die die karyologischen Befunde die Sortenangaben und deren Herkunft sowie die in die Translokation involvierten Chromosomen bzw. Chromosomenarme beinhaltet. Die Ergebnisse werden diskutiert.
    Abstract: Краткое содержание Сорта и линии гексаплоидной пшеницы часто различаются наличием реципрокных транслокаций хромосом. Они идентифицируются образованием мультивалентных хромосомных конфигураций. Среди примерно 270 анализированных комбинаций наблюдались ассоциации 14, 24, 34, 16, 18, 16+14 и 24+16 с различными частотами. Для разнообразных генетических и цитологических ¶rt;кспериментов требуется знание о наличии таких структурных отклонений. Был составлен список имеющихся литературных данных, отражающий кариологическое состояние, сортовые данные, их происхождение, а также транслокации включённых хромосом и соответственно плечи хромосом. Приводятся обсуждения реаультатов.
    Notes: Summary Hexaploid wheat varieties are often differentiated by reciprocal translocations. The chromosomes involved are frequently identified after crossing and F1 analysis. The hybrids show in meiosis multivalent configurations of 14, 24, 34, 16, 18, 14+16, and 24+16 with different frequencies. For several studies the knowledge about interchanges is required. Therefore, a list was compiled summarizing available data from 270 wheat combinations on the presence and number of translocations, on configurations observed and on chromosomes involved.
    Type of Medium: Electronic Resource
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