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
Filter
  • Molecular markers  (7)
  • Springer  (7)
  • American Chemical Society
  • American Institute of Physics (AIP)
  • Cambridge University Press
  • 2000-2004  (7)
  • 1940-1944
Collection
Keywords
Publisher
  • Springer  (7)
  • American Chemical Society
  • American Institute of Physics (AIP)
  • Cambridge University Press
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Genes/QTLs affecting flood tolerance in rice (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 1074-1081 
    Details
    ISSN: 1432-2242
    Keywords: Key words Elongation ability ; Submergence tolerance ; Oryza sativa L. ; Epistasis ; Abiotic stress ; Molecular markers ; Differential gene expression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The adaptation of deepwater rice to flooding is attributed to two mechanisms, submergence tolerance and plant elongation. Using a QTL mapping study with replicated phenotyping under two contrasting (water qualities) submergence treatments and AFLP markers, we were able to identify several genes/QTLs that control plant elongation and submergence tolerance in a recombinant inbred rice population. Our results indicate that segregation of rice plants in their responses to different flooding stress conditions is largely due to the differential expression of a few key elongation and submergence tolerance genes. The most important gene was QIne1 mapped near sd-1 on chromosome 1. The Jalmagna (the deepwater parent) allele at this locus had a very large effect on internal elongation and contributed significantly to submergence tolerance under flooding. The second locus was a major gene, sub1(t), mapped to chromosome 9, which contributed to submergence tolerance only. The third one was a QTL, QIne4, mapped to chromosome 4. The IR74 (non-elongating parent) allele at this locus had a large effect for internal elongation. An additional locus that interacted strongly with both QIne1 and QIne4 appeared near RG403 on chromosome 5, suggesting a complex epistatic relationship among the three loci. Several QTLs with relatively small effects on plant elongation and submergence tolerance were also identified. The genetic aspects of these flooding tolerance QTLs with respect to patterns of differential expression of elongation and submergence tolerance genes under flooding are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051582
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Temporal trends in the diversity of UK wheat (2000)
    Springer
    Theoretical and applied genetics 100 (2000), S. 912-917 
    Details
    ISSN: 1432-2242
    Keywords: Key words Triticum aestivum ; Morphological characters ; Molecular markers ; Genetic diversity ; Plant breeding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The common assertion that scientific plant breeding leads to a narrowing in crop diversity has been examined. We have characterised the dominant UK winter wheat varieties from the period 1934–1994 using two types of PCR-based DNA profiling (AFLPs, amplified fragment length polymorphisms, and SSRs, simple-sequence repeats, microsatellites), seed storage protein analysis and morphological descriptors. The varieties were grouped into a series of decadal groups on the basis of their first appearance on the ’Recommended List’, and by analysis of molecular variance it was shown that an overwhelming proportion of the overall observed variance occurred within, rather than between, decades. A further range of statistical indices provided little evidence for any significant narrowing of overall diversity over the time studied. Principal co-ordinate analysis showed that the diversity in the time periods overlapped and that the most modern group of varieties encompassed the majority of the diversity found in earlier decades. The consistent indication is that plant breeding has resulted, over time, in a qualitative, rather than a quantitative, shift in the diversity of winter wheat grown in the UK.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051370
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Inheritance of citrus nematode resistance and its linkage with molecular markers (2000)
    Springer
    Theoretical and applied genetics 100 (2000), S. 1010-1017 
    Details
    ISSN: 1432-2242
    Keywords: Key words Tylenchulus semipenetrans ; Bulked segregant analysis ; Linkage map ; QTL ; Molecular markers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Eleven RAPD markers linked to a gene region conferring resistance to citrus nematodes in an intergen-eric backcross family were identified. Two sequence- characterized amplified region markers linked to a citrus tristeza virus resistance gene and one selected resistance gene candidate marker were evaluated for their association with citrus nematode resistance. A nematode-susceptible citrus hybrid, LB6-2 [Clementine mandarin (Citrus reticulata)×Hamlin orange (C. sinensis)], was crossed with the citrus nematode-resistant hybrid Swingle citrumelo (C. paradisi×Poncirus trifoliata) to produce 62 hybrids that were reproduced by rooted cuttings. The plants were grown in a greenhouse and inoculated with nematodes isolated from infected field trees. The hybrids segregated widely for this trait in a continuous distribution, suggesting possible polygenic control of the resistance. Bulked segregant analysis was used to identify markers associated with resistance by bulking DNA samples from individuals at the phenotypic distribution extremes. Linkage relationships were established by the inheritance of the markers in the entire population. A single major gene region that contributes to nematode resistance was identified. The resistance was inherited in this backcross family from the grandparent Poncirus trifoliata as a single dominant gene. QTL analysis revealed that 53.6% of the phenotypic variance was explained by this major gene region. The existence of other resistance-associated loci was suggested by the continuous phenotypic distribution and the fact that some moderately susceptible hybrids possessed the resistance-linked markers. The markers may be useful in citrus rootstock breeding programs if it can be demonstrated that they are valid in other genetic backgrounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051382
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    An integrated AFLP and RFLP Brassica oleracea linkage map from two morphologically distinct doubled-haploid mapping populations (2000)
    Springer
    Theoretical and applied genetics 100 (2000), S. 75-81 
    Details
    ISSN: 1432-2242
    Keywords: Key words Brassica oleracea ; Integrated map ; Molecular markers ; Doubled-haploid ; Comparative mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Genetical maps of molecular markers in two very different F1-derived doubled-haploid populations of Brassica oleracea are compared and the first integrated map described. The F1 crosses were: Chinese kale×calabrese (var. alboglabra×var. italica) and cauliflower×Brussels sprout (var. botrytis×var. gemmifera). Integration of the two component maps using Joinmap v.2.0 was based on 105 common loci including RFLPs, AFLPs and microsatellites. This provided an effective method of producing a high-density consensus linkage map of the B. oleracea genome. Based on 547 markers mapping to nine linkage groups, the integrated map covers a total map length of 893 cM, with an average locus interval of 2.6 cM. Comparisons back to the component linkage maps revealed similar sequences of common markers, although significant differences in recombination frequency were observed between some pairs of homologous markers. Map integration resulted in an increased locus density and effective population size, providing a stronger framework for subsequent physical mapping and for precision mapping of QTLs using substitution lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050011
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    A linkage map of the chickpea (Cicer arietinum L.) genome based on recombinant inbred lines from a C. arietinum×C. reticulatum cross: localization of resistance genes for fusarium wilt races 4 and 5 (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 1155-1163 
    Details
    ISSN: 1432-2242
    Keywords: Key words Chickpea ; Genetic map ; Molecular markers ; Fusarium wilt ; Disease resistance genes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  An integrated molecular marker map of the chickpea genome was established using 130 recombinant inbred lines from a wide cross between a cultivar resistant to fusarium wilt caused by Fusarium oxysporum Schlecht. emend. Snyd. &. Hans f. sp. ciceri (Padwick) Snyd & Hans, and an accession of Cicer reticulatum (PI 489777), the wild progenitor of chickpea. A total of 354 markers were mapped on the RILs including 118 STMSs, 96 DAFs, 70 AFLPs, 37 ISSRs, 17 RAPDs, eight isozymes, three cDNAs, two SCARs and three loci that confer resistance against different races of fusarium wilt. At a LOD-score of 4.0, 303 markers cover 2077.9 cM in eight large and eight small linkage groups at an average distance of 6.8 cM between markers. Fifty one markers (14.4%) were unlinked. A clustering of markers in central regions of linkage groups was observed. Markers of the same class, except for ISSR and RAPD markers, tended to generate subclusters. Also, genes for resistance to races 4 and 5 of fusarium wilt map to the same linkage group that includes an STMS and a SCAR marker previously shown to be linked to fusarium wilt race 1, indicating a clustering of several fusarium-wilt resistance genes around this locus. Significant deviation from the expected 1 : 1 segregation ratio was observed for 136 markers (38.4%, P〈0.05). Segregation was biased towards the wild progenitor in 68% of the cases. Segregation distortion was similar for all marker types except for ISSRs that showed only 28.5% aberrant segregation. The map is the most extended genetic map of chickpea currently available. It may serve as a basis for marker-assisted selection and map-based cloning of fusarium wilt resistance genes and other agronomically important genes in future.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051592
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Description and analysis of genetic diversity between commercial bean lines (Phaseolus vulgaris L.) (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 1207-1214 
    Details
    ISSN: 1432-2242
    Keywords: Key words Genetic diversity ; Molecular markers ; Common bean ; Germplasm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The effectiveness of RFLP, DAMD-PCR, ISSR and RAPD markers in assessing polymorphism and relationships between 24 commercial lines of Phaseolus vulgaris L.was evaluated. We have used a Phaseolus-specific minisatellite sequence as a probe, which enabled 23 of the bean lines tested to be fingerprinted. Based on the sequence information obtained, primers corresponding to the bean-specific minisatellite core sequence were used in subsequent PCR amplifications. Our observations indicated that while the DAMD-PCR was sensitive in detecting genetic variation between bean species and between accessions of P. vulgaris, when used alone it may be limited in its ability to detect genetic variation among cultivated bean lines due to the low number of loci amplified. Only one out of the five ISSR primers tested was efficient in generating multiple band profiles, which was insufficient to distinguish all the different bean lines. Reproducible RAPD profiles were obtained, and these allowed us to differentiate all the genotypes tested with seven primers. We ultimately used only results from RFLP and RAPD markers to explore the genetic diversity among commercial bean lines. Both analyses led to the same clustering of the bean lines according to their geographical origins (United States or Europe). With respect to the European lines, the results obtained from RAPD data also enable the lines to be clustered according to their creators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051599
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    QTL analysis of flower and fruit traits in sour cherry (2000)
    Springer
    Theoretical and applied genetics 100 (2000), S. 535-544 
    Details
    ISSN: 1432-2242
    Keywords: Key words Prunus cerasus ; QTL ; Pseudo-testcross ; Molecular markers ; Polyploid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The map locations and effects of quantitative trait loci (QTLs) were estimated for eight flower and fruit traits in sour cherry (Prunus cerasus L.) using a restriction fragment length polymorphism (RFLP) genetic linkage map constructed from a double pseudo-testcross. The mapping population consisted of 86 progeny from the cross between two sour cherry cultivars, Rheinische Schattenmorelle (RS)×Erdi Botermo (EB). The genetic linkage maps for RS and EB were 398.2 cM and 222.2 cM, respectively, with an average interval length of 9.8 cM. The RS/EB linkage map that was generated with shared segregating markers consisted of 17 linkage groups covering 272.9 cM with an average interval length of 4.8 cM. Eleven putatively significant QTLs (LOD 〉2.4) were detected for six characters (bloom time, ripening time, % pistil death, % pollen germination, fruit weight, and soluble solids concentration). The percentage of phenotypic variation explained by a single QTL ranged from 12.9% to 25.9%. Of the QTLs identified for the traits in which the two parents differed significantly, 50% had allelic effects opposite to those predicted from the parental phenotype. Three QTLs affecting flower traits (bloom time, % pistil death, and % pollen germination) mapped to a single linkage group, EB 1. The RFLP closest to the bloom time QTL on EB 1 was detected by a sweet cherry cDNA clone pS141 whose partial amino acid sequence was 81% identical to that of a Japanese pear stylar RNase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050070
    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...