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  • 1
    Electronic Resource
    Electronic Resource
    Stratigraphy of the upper cretaceous and lower tertiary strata in the Tethyan Himalayas of Tibet (Tingri area, China) (1996)
    Springer
    International journal of earth sciences 85 (1996), S. 723-754 
    Details
    ISSN: 1437-3262
    Keywords: Biostratigraphy ; Lower Tertiary ; Indian shelf ; Upper Cretaceous ; Foraminifers ; Lithostratigraphy ; Passive continental margin ; Tethys Himalaya ; Tibet
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The 1500-m-thick marine strata of the Tethys Himalaya of the Zhepure Mountain (Tingri, Tibet) comprise the Upper Albian to Eocene and represent the sedimentary development of the passive northern continental margin of the Indian plate. Investigations of foraminifera have led to a detailed biozonation which is compared with the west Tethyan record. Five stratigraphic units can be distinguished: The Gamba group (Upper Albian - Lower Santonian) represents the development from a basin and slope to an outer-shelf environment. In the following Zhepure Shanbei formation (Lower Santonian - Middle Maastrichtian), outer-shelf deposits continue. Pebbles in the top layers point to beginning redeposition on a continental slope. Intensified redeposition continues within the Zhepure Shanpo formation (Middle Maastrichtian - Lower Paleocene). The series is capped by sandstones of the Jidula formation (Danian) deposited from a seaward prograding delta plain. The overall succession of these units represents a sea-level high at the Cenomanian/Turonian boundary followed, from the Turonian to Danian, by an overall shallowing-upward megasequence. This is followed by a final transgression — regression cycle during the Paleocene and Eocene, documented in the Zhepure Shan formation (?Upper Danian - Lutetian) and by Upper Eocene continental deposits. The section represents the narrowing and closure of the Tethys as a result of the convergence between northward-drifting India and Eurasia. The plate collision started in the Lower Maastrichtian and caused rapid changes in sedimentation patterns affected by tectonic subsidence and uplift. Stronger subsidence and deposition took place from the Middle Maastrichtian to the Lower Paleocene. The final closure of remnant Tethys in the Tingri area took place in the Lutetian.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02440107
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Direct amplification of minisatellite-region DNA with VNTR core sequences in the genus Oryza (1997)
    Springer
    Theoretical and applied genetics 95 (1997), S. 942-949 
    Details
    ISSN: 1432-2242
    Keywords: Key words Oryza ; Rice ; PCR ; DNA fingerprinting ; Minisatellite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A polymerase chain reaction (PCR) application, involving the directed amplification of minisatellite-region DNA (DAMD) with several minisatellite core sequences as primers, was used to detect genetic variation in 17 species of the genus Oryza and several rice cultivars (O. sativa L.). The electrophoretic analysis of DAMD-PCR products showed high levels of variation between different species and little variation between different cultivars of O. sativa. Polymorphisms were also found between accessions within a species, and between individual plants within an accession of several wild species. The DAMD-PCR yielded genome-specific banding patterns for the species studied. Several DAMD-PCR-generated DNA fragments were cloned and characterized. One clone was capable of detecting multiple fragments and revealed individual-specific hybridization banding patterns using genomic DNA from wild species as well as rice cultivars. A second clone detected only a single polymorphic locus, while a third clone expressed a strong genome specificity by Southern analysis. The results demonstrated that DAMD-PCR is potentially useful for species and genome identification in Oryza. The DAMD-PCR technique also allows for the isolation of informative molecular probes to be utilized in DNA fingerprinting and genome identification in rice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050645
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Repetitive, genome-specific probes in wheat (Triticum aestivum L. em Thell) amplified with minisatellite core sequences (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 982-989 
    Details
    ISSN: 1432-2242
    Keywords: Genome-specific ; DAMD ; Minisatellite ; PCR ; Triticum ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The detection and analysis of DNA polymorphisms in crops is an essential component of marker-assisted selection and cultivar identification in plant breeding. We have explored the direct amplification of minisatellite DNA by PCR (DAMD-PCR) as a means for generating DNA probes that are useful for detecting DNA polymorphisms and DNA fingerprinting in wheat. This technique was facilitated by high-stringency PCR with known plant and animal minisatellite core sequences as primers on wheat genomic DNA. The products of DAMD-PCR from Triticum aestivum, T. durum, T. monococcum, T. speltoides and T. tauschii showed a high degree of polymorphism and the various genomes could be identified. Cloning of the DAMD-PCR products and subsequent Southern hybridization frequently revealed polymorphic probes showing a good degree of genome specificity. In addition, polymorphic, single locus, and moderately dispersed PCR products were cloned that may have a potential for DNA fingerprinting. Our experiments were limited primarily to diploid wheats and the results indicated that DAMD-PCR may isolate genome-specific probes from wild diploid wheat species that could be used to monitor genome introgression into hexaploid wheat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224102
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Stratigraphy of the Upper Cretaceous and Lower Tertiary strata in the Tethyan Himalayas of Tibet (Tingri area, China) (1996)
    Springer
    Geologische Rundschau 85 (1996), S. 723-754 
    Details
    ISSN: 0016-7835
    Keywords: Key words Biostratigraphy ; Lower Tertiary ; Indian shelf ; Upper Cretaceous ; Foraminifers ; Lithostratigraphy ; Passive continental margin ; Tethys Himalaya ; Tibet
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  The 1500-m-thick marine strata of the Tethys Himalaya of the Zhepure Mountain (Tingri, Tibet) comprise the Upper Albian to Eocene and represent the sedimentary development of the passive northern continental margin of the Indian plate. Investigations of foraminifera have led to a detailed biozonation which is compared with the west Tethyan record. Five stratigraphic units can be distinguished: The Gamba group (Upper Albian – Lower Santonian) represents the development from a basin and slope to an outer-shelf environment. In the following Zhepure Shanbei formation (Lower Santonian – Middle Maastrichtian), outer-shelf deposits continue. Pebbles in the top layers point to beginning redeposition on a continental slope. Intensified redeposition continues within the Zhepure Shanpo formation (Middle Maastrichtian – Lower Paleocene). The series is capped by sandstones of the Jidula formation (Danian) deposited from a seaward prograding delta plain. The overall succession of these units represents a sea-level high at the Cenomanian/Turonian boundary followed, from the Turonian to Danian, by an overall shallowing-upward megasequence. This is followed by a final transgression – regression cycle during the Paleocene and Eocene, documented in the Zhepure Shan formation (?Upper Danian – Lutetian) and by Upper Eocene continental deposits. The section represents the narrowing and closure of the Tethys as a result of the convergence between northward-drifting India and Eurasia. The plate collision started in the Lower Maastrichtian and caused rapid changes in sedimentation patterns affected by tectonic subsidence and uplift. Stronger subsidence and deposition took place from the Middle Maastrichtian to the Lower Paleocene. The final closure of remnant Tethys in the Tingri area took place in the Lutetian.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005310050108
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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