ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Meiotic restitution in wheat-barley hybrids (1980)
    Springer
    Chromosoma 79 (1980), S. 363-372 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Meiotic restitution occurs in pollen mother cells (PMCs) of reciprocal F1 hybrids between wheat and barley. In occasional PMCs, all or most of the 28 chromosomes assemble at the equatorial plate at metaphase I, but instead of undergoing anaphase I separation they reform into a mass of chromatin to form a restitution nucleus. Some of these restituted nuclei undergo a regular second division and dyads are produced among other non-restituted cells which have reached the tetrad stage of division. Other restituted nuclei fail to undergo a second division and then the PMCs appear as monads among neighbouring tetrads. Both the monads and dyads are expected to produce microsporocytes with the diploid complement of chromosomes. Chromosomes which fail to become included in the restituted nucleus form separate micronuclei and, depending on whether they undergo a regular second division or not, the PMCs containing them eventually appear as tetrads, triads or dyads. These partially restituted nuclei are expected to produce unreduced gametes, deficient for one or more chromosomes. It is postulated from these observations that restitution in wheatbarley F1 hybrids depends on a high frequency of univalent accumulation at the equatorial plate at metaphase I and the subsequent failure of the chromosomes to undergo anaphase I separation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327326
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Inheritance of resistance to paraquat in barley grass Hordeum glaucum Steud. (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 28 (1988), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Two biotypes of the grass weed barley grass (Hordeum glaucum), one resistant and the other susceptible to the herbicide paraquat, were studied along with their F1, F2 and F3 progeny to determine the inheritance of paraquat resistance. The plants were sprayed with 50–200 g a.i. paraquat ha−1. These concentrations killed the susceptible type. The data obtained from segregating populations indicated that paraquat resistance in H. glaucum is controlled by a single nuclear gene with incomplete dominance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1988.tb00819.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Substituting Ability of Individual Barley Chromosomes for Wheat Chromosomes 1. Substitutions Involving Barley Chromosomes 1, 3 and 6 (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 109 (1992), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In order to determine the genetic relatedness of individual barley chromosomes to wheat chromosomes, ‘Betzes’ barley chromosomes 1, 3 and 6 were substituted for individual ‘Chinese Spring’ wheat chromosomes of homoeologous groups 7, 3 and 6, respectively. The substitution status of these lines has been confirmed using isozyme selective markers, chromosome pairing behaviour in F1 hybrids between the substitution lines and the appropriate double ditelocentric stocks of wheat, and hybridization of cDNA probes to the genomic DNA digests of these substitution lines. Each of the three barley chromosomes provided genetic compensation for the wheat chromosomes they replaced in the substitution plants. From the basis of this compensation with respect to plant vigour and fertility, barley chromosomes 1, 3 and 6 have been designated 7H, 3H and 6H.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1992.tb00164.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Identification of wheat-barley addition lines with N-banding of chromosomes (1980)
    Springer
    Chromosoma 76 (1980), S. 365-373 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The seven chromosomes of barley (Hordeum vulgare) have been identified individually by their distinctive N-banding pattern. Furthermore all of the barley chromosome N-banding patterns were found to be recognizably different from those exhibited by wheat chromosomes, making it possible to identify individual barley chromosomes when present in a wheat background. N-banding has therefore been used to identify the individual barley chromosomes present in (a) reciprocal wheat-barley F1 hybrids, including some with abnormal chromosome constitution, and (b) a set of wheat-barley addition lines produced in this laboratory. The value of N-banding for detecting translocations between wheat and barley chromosomes and for isolating lines possessing a pair of barley chromosomes substituted for a particular pair of wheat chromosomes is also demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327272
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    STS-PCR markers appropriate for wheat-barley introgression (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 826-832 
    Details
    ISSN: 1432-2242
    Keywords: STS-PCR markers ; Wheat-barley introgression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Introgression of chromosomal segments across large taxonomic distances has long been an objective of scientists interested in understanding the relationships between genes and their effect on phenotype. Barley and wheat represent cultivated members of the Triticeae with different zones of adaptation, different responses to pathogens, and different end-use characteristics. Introduction of small, well-characterized chromosomal segments among grass relatives presents an opportunity to both better understand how genes perform in novel genomic environments and to learn more about the evolutionary novelties which differentiate related species. Since the distribution of the wheat-barley addition lines, the potential power and value of a comprehensive series of wheat/barley translocation lines has been widely appreciated. A scarcity of easy-touse markers which unambiguously distinguish barley loci from their wheat homologues has limited the ability of scientists to identify the relatively rare inter-chromosomal recombination events which are the necessary antecedents of these lines. Since the single most critical pathogen affecting U.S. wheat producers is Karnal bunt (Tilletia indica) and since barley carries a gene conferring immunity, molecular markers may prove practically and immediately important. In this report we describe a series of 135 barley-specific markers amplified by 115 primer sets developed from sequences from previously mapped restriction fragment length polymorphism (RFLP) markers. These easily distinguish the cognate barley products from their wheat counterparts and should find ready use in the identification of lines which contain wheat/barley translocation events.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224082
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Mapping of chromosome regions conferring boron toxicity tolerance in barley (Hordeum vulgare L.) (1999)
    Springer
    Theoretical and applied genetics 98 (1999), S. 1293-1303 
    Details
    ISSN: 1432-2242
    Keywords: Key words Boron toxicity ; Boron tolerance ; RFLP mapping ; Barley
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Boron toxicity has been recognised as an important problem limiting production in the low-rainfall regions of southern Australia, West Asia and North Africa. Genetic variation for boron toxicity tolerance in barley has been characterised but the mode of inheritance and the location of genes controlling tolerance were not previously known. A population of 150 doubled-haploid lines from a cross between a boron toxicity tolerant Algerian landrace, Sahara 3771, and the intolerant Australian cultivar Clipper was screened in four tolerance assays. An RFLP linkage map of the Clipper×Sahara population was used to identify chromosomal regions associated with boron tolerance in barley. Interval regression-mapping allowed the detection of four chromosomal regions involved in the boron tolerance traits measured. A region on chromosome 2H was associated with leaf-symptom expression, a region on chromosome 3H was associated with a reduction of the affect of boron toxicity on root growth suppression, a region on chromosome 6H was associated with reduced boron uptake, and a region on chromosome 4H was also associated with the control of boron uptake as well as being associated with root-length response, dry matter production and symptom expression. The benefits and potential of marker-assisted selection for boron toxicity tolerance are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051195
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Genomic in situ hybridization to identify alien chromosomes and chromosome segments in wheat (1992)
    Springer
    Theoretical and applied genetics 84 (1992), S. 778-786 
    Details
    ISSN: 1432-2242
    Keywords: Genomic probing ; In situ hybridization ; Interphase cytogenetics ; Physical mapping ; Triticum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Genomic in situ hybridization was used to identify alien chromatin in chromosome spreads of wheat, Triticum aestivum L., lines incorporating chromosomes from Leymus multicaulis (Kar. and Kir.) Tzvelev and Thinopyrum bessarabicum (Savul. and Rayss) Löve, and chromosome arms from Hordeum chilense Roem. and Schult, H. vulgare L. and Secale cereale L. Total genomic DNA from the introgressed alien species was used as a probe, together with excess amounts of unlabelled blocking DNA from wheat, for DNA:DNA in-situ hybridization. The method labelled the alien chromatin yellow-green, while the wheat chromosomes showed only the orange-red fluorescence of the DNA counterstain. Nuclei were screened from seedling root-tips (including those from half-grains) and anther wall tissue. The genomic probing method identified alien chromosomes and chromosome arms and allowed counting in nuclei at all stages of the cell cycle, so complete metaphases were not needed. At prophase or interphase, two labelled domains were visible in most nuclei from disomic lines, while only one labelled domain was visible in monosomic lines. At metaphase, direct visualization of the morphology of the alien chromosome or chromosome segment was possible and allowed identification of the relationship of the alien chromatin to the wheat chromosomes. The genomic in-situ hybridization method is fast, sensitive, accurate and informative. Hence it is likely to be of great value for both cytogenetic analysis and in plant breeding programmes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00227384
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Production of wheat-barley recombinant chromosomes through induced homoeologous pairing (1992)
    Springer
    Theoretical and applied genetics 83 (1992), S. 489-494 
    Details
    ISSN: 1432-2242
    Keywords: Isozyme markers ; Homoeologous pairing ; phlb mutant ; Wheat-barley recombination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Sears' phlb mutant was used successfully for the first time to induce pairing and recombination between specific barley chromosomes and their wheat homoeologues. Pairing was induced in specially constructed genetic stocks having 19 pairs of wheat chromosomes and triply monosomic for either barley chromosome arm 6HL or 3HL, a related wheat chromosome, and chromosome 5B of wheat carrying the phlb mutation. Wheat-barley recombinant chromosomes were isolated from among the progeny obtained from self-fertilization of the triple monosomic stocks, by screening for dissociation of biochemical markers on the barley arms. Glutamic oxaloacetic transaminase (GOT), aconitase hydratase (ACO), and dipeptidase (DIP) isozymes were used to select recombinants involving the 6HL arm, and esterase (EST) and malate dehydrogenase (MDH) were used for the 3HL arm. Altogether, six recombinants involving 6HL (1.4%) and six involving 3HL (1.1%) were isolated. These wheat-barley recombinant chromosomes are being used to construct a detailed gene order map of barley based on biochemical and molecular markers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226538
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    RFLP mapping of the Ha 2 cereal cyst nematode resistance gene in barley (1997)
    Springer
    Theoretical and applied genetics 94 (1997), S. 1060-1064 
    Details
    ISSN: 1432-2242
    Keywords: Key wordsCCN ; RFLP ; Hordeum vulgare ; Heterodera avenae ; Genetic mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The cereal cyst nematode (CCN), Heterodera avenae Woll., is an economically damaging pest of barley in many of the world’s cereal-growing areas. The development of CCN-resistant cultivars may be accelerated through the use of molecular markers. A number of resistance genes against the pest are well known; one of them, the single dominant Ha 2 resistance gene, has been shown to be effective against the Australian pathotype and maps to chromosome 2 of barley. Segregation analysis identified two restriction fragment length polymorphism (RFLP) markers flanking the resistance gene in two doubled-haploid populations of barley. AWBMA 21 and MWG 694 mapped 4.1 and 6.1 cM respectively from the Ha 2 locus in the Chebec×Harrington cross and 4.0 and 9.2 cM respectively in the Clipper×Sahara cross. Analysis of a further seven sources of CCN resistance in the form of near-isogenic lines (NILs) indicates that all available sources of resistance to the Australian pathotype of CCN in barley represent the Ha 2 locus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050515
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Mapping and validation of chromosome regions conferring boron toxicity tolerance in wheat (Triticum aestivum) (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 767-777 
    Details
    ISSN: 1432-2242
    Keywords: Key words Boron toxicity ; Boron tolerance ; Mapping ; Wheat ; Marker-assisted selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Boron is an essential plant micro-nutrient which can be phytotoxic to plants if present in soils in high concentration. Boron toxicity has been recognised as an important problem limiting production in the low rainfall areas of southern Australia, West Asia and North Africa. Genetic variation for boron toxicity tolerance in wheat has been well-characterised. The efficiency of breeding for boron toxicity tolerance could be greatly enhanced by the development of molecular markers associated with QTLs for tolerance in wheat. A population of 161 doubled haploids from a cross between the tolerant cultivar Halberd and the moderately sensitive cultivar Cranbrook was used to identify chromosomal regions involved in boron tolerance. A combined RFLP and AFLP linkage map of the Cranbrook x Halberd population was used to identify chromosomal regions involved in the boron tolerance traits measured. Regions on chromosome 7B and 7D were associated with leaf symptom expression. The region on chromosome 7B was also associated with the control of boron uptake and with a reduction in the effect of boron toxicity on root-growth suppression. RFLP markers at the chromosome 7B and 7D loci were shown to be effective in selecting for improved boron tolerance in an alternative genetic background. Halberd alleles at the chromosome 7B locus were associated with the concentration of boron in whole shoots and grain. The concentration of boron in whole shoots and in grain were both related to grain yield in a field trial conducted on soil containing toxic levels of boron. Implications relating to marker-assisted selection for boron toxicity tolerance in wheat are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051542
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...