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  • LUNAR AND PLANETARY EXPLORATION  (3)
  • Barley (Hordeum vulgare)  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Development of STS markers closely linked to the Ppd-H1 photoperiod response gene of barley (Hordeum vulgare L.) (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 1202-1206 
    Details
    ISSN: 1432-2242
    Keywords: Keywords Amplified fragment length polymorphism (AFLP) ; Barley (Hordeum vulgare) ; Photoperiod ; Mapping ; Ppd-H1 ; Sequence tagged site (STS)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A BC2 population of 353 plants segregating for the Ppd-H1 photoperiod response gene was developed from a cross between the winter barley ’Igri’ and the spring barley ’Triumph.’ Bulk segregant analysis identified six AFLP markers closely linked to the Ppd–H1 gene and three strongly amplified AFLP bands that mapped 0.8-cM distal, 0.6-cM proximal and 2.3-cm proximal to Ppd-H1 were cloned and sequenced. Southern-blot analysis showed that the cloned fragments were single-copy sequences in ’Igri’, the variety from which they were derived. Two of the sequences were absent from ’Triumph’ while the third detected a single-copy sequence. The cloned fragments were used to design specific sequence tagged site (STS) primer pairs to assist in the construction of a high-resolution map of the Ppd-H1 region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051598
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    Petrology of Apollo 15 station 9A surface and drive tube soils (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Modal analysis data are presented for six samples from the upper part of the Apollo 15 lunar core 15010/011 in order to further investigate the maturation profile of the core and to estimate the source rock contribution. The core data are compared with those of the adjacent soils 15531 and 15601. The soils analyzed are relatively immature and remarkably homogeneous. Surface soil 15531 is the most immature one, which is attributed to the fact that it was sampled from the rim of a relatively recent 3 m-diameter crater and thus contains an admixture of fresh bedrock material ejected by this cratering event. The major source of rock contribution to the soils is from petrographically identifiable mare basalts (about 89% to the core and to 15601 and about 87% to 15531). Olivine basalts and quartz normative basalts occur in an approximate ratio of 3:1; contributions of KREEP basalts and the Front are relatively minor.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 16, 1981 - Mar 20, 1981; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Regolith maturation on the earth and the moon with an example from Apollo 15 (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Petrographic data on twelve Apollo 15 surface samples and on twelve samples from the double drive tube 15010/011 are presented in the form of triangular AML (agglutinate-monomineralic fragments-lithic fragments) plots. The triangular AML plots for different grain sizes show smoothly varying contour lines only for the solids derived mainly from mare basalts. These contour lines are interpreted as lines of isomaturity. The AML plots with isomature contours are somewhat similar to QFR (quartz-feldspar-rock fragments) triangular plots used for terrestrial clastic sediments. Both kinds of plots are sensitive to maturity and both may be used to predict evolution paths. Soils from predominantly highland areas and from other mixed terrains at Apollo 15 sites do not make smooth contours on AML diagrams. By analogy with QFR diagrams, the lack of smooth contours may be due to mixed source rock families, or to recent mixing, or both.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 16, 1981 - Mar 20, 1981; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Petrography of lunar soil 15601 (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Lunar soil 15601 has been studied petrographically using grain size analysis, modal analysis, and electron probe microanalysis of monomineralic fragments in the 90-150-micron size fraction. The soil is immature; the grain size distribution is unimodal and very symmetrical, indicating that the soil is a homogeneous product of a single set of processes. It is concluded that 15601 is mostly a simple Apollo 15 mare basalt soil, and its properties can be used to approximate an end product of the array of complex soils that the lunar sample missions have returned.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 17, 1980 - Mar 21, 1980; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
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