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  • 1
    Electronic Resource
    Electronic Resource
    High molecular weight glutenin subunit in durum wheat (T. durum) (1989)
    Springer
    Theoretical and applied genetics 78 (1989), S. 353-358 
    Details
    ISSN: 1432-2242
    Keywords: Durum wheat ; T. durum ; SDS-PAGE ; Novel subunits ; Glutenin-diversity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The diversity of high molecular weight (HMW) glutenin subunits of 502 varieties of durum wheat (Triticum durum) from 23 countries was studied using sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE). Twenty-nine types of patterns were observed with 18 mobility bands. A total of 18 alleles were identified by comparing the mobilities of their subunits to those previously found in hexaploid wheat (T. aestivum) and in Triticum turgidum var. dicoccum. Five new alleles were detected: two on the Glu A1 and three on the Glu B1 locus. Comparison of the frequency of alleles in the three species T. aestivum, T. dicoccum and T. durum was investigated. Significant differences exist between each of these species on the basis of the frequency distributions of their three and four common alleles at the Glu A1 and Glu B1 locus, respectively. The Glu B1c allele occuring very frequently in hexaploid wheats was not found in the two tetraploid species. More than 83% of the T. durum analysed were found to have the Glu A1c (null) allele.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00265296
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Photosynthesis of six barley genotypes as affected by water stress (1997)
    Springer
    Photosynthetica 34 (1997), S. 67-76 
    Details
    ISSN: 1573-9058
    Keywords: Hordeum vulgare ; net photosynthetic rate ; osmotic adjustment ; osmotic potential ; relative water content ; stomatal conductance ; water potential
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effect of water stress on plant water status and net photosynthetic gas exchange (PN) in six barley genotypes (Hordeum vulgare L.) differing in productivity and drought tolerance was studied in a controlled growth chamber. Osmotic adjustment (OA), PN, stomatal conductance (gs), and the ratio intercellular/ambient. CO2 concentration (Ci/Ca) were evaluated at four different levels of soil water availability, corresponding to 75, 35, 25 and 15 % of total available water. Variability in OA capacity was observed between genotypes: the drought tolerant genotypes Albacete and Alpha showed higher OA than drought susceptible genotypes Express and Mogador. The genotype Albacete exhibited also higher PN than the others at low water potential (Ψ). The ratios of PN/gs and Ci/Ca showed that differences in photosynthetic inhibition between genotypes at low Ψ were probably due to nonstomatal effects. In Tichedrett, a landrace genotype with a very extensive root development, OA was not observed, however, it exhibited a capacity to maintain its photosynthetic activity under water stress.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006863801473
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    Paper (German National Licenses)
    Fulltext
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