Library

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
  • Hordeum vulgare  (2)
  • Barley  (1)
  • Enzyme loci  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Worldwide pattern of multilocus structure in barley determined by discrete log-linear multivariate analyses (1990)
    Springer
    Theoretical and applied genetics 80 (1990), S. 121-128 
    Details
    ISSN: 1432-2242
    Keywords: Barley ; Log-linear multivariate analyses ; Multilocus associations ; Enzyme loci
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Data from the electrophoretic assay for seven enzyme loci of 1,032 accessions of cultivated barley, Hordeum vulgare L., from the USDA world barley collection were analyzed for multilocus structure using discrete log-linear multivariate techniques. Three major steps were involved in the analysis: (i) identification and elimination of terms that have inconsequential effects in multilocus association; (ii) construction of a log-linear model that best describes the complete multilocus structure of the genetic system; and (iii) evaluation of each of the association terms included in the model. The results of analyses of two subsets of loci show that the multilocus genetic system of cultivated barley, including loci located on different chromosomes, is organized into hierarchically structured complexes of loci. Multilocus structure differs in various geographical regions of the world. The structure of barleys from Southwest Asia, the putative center of origin for cultivated barley, is intermediate for both subsets of loci. Differences increased progressively across the Eurasian-African landmasses in each direction with increasing distance from Southwest Asia, with the consequence that the barleys from West Europe, East Asia, and Ethiopia are maximally different from those of Southwest Asia and Middle South Asia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224025
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Genetic diversity of six isozyme loci in cultivated barley of Tibet (1989)
    Springer
    Theoretical and applied genetics 78 (1989), S. 281-286 
    Details
    ISSN: 1432-2242
    Keywords: Population genetics ; Hordeum vulgare ; Isozyme ; Single-locus genotype ; Multilocus association
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A random sample of 463 accessions of cultivated barley from the Tibet Hordeum germplasm collection was assayed electorphoretically for genetic diversity at six isozyme loci. Two loci (Acp-1 and Got-1) were found to be monomorphic and extensive variation was detected at the remaining four loci (Est-1, Est-2, Est-3 and Est-4). The allelic composition of Tibetan barley appeared to be distinct as compared to the results of previous studies of barleys from other parts of the world. Partitioning of genetic diversity showed that approximately 96% of the total variation was maintained at the within-subregion level and only about 4% was accounted for by differentiation among the eight subregions. Analysis of multilocus genotypes revealed non-random association of the alleles at the four loci, both in the entire sample and in all the subregions, although the four major multilocus genotypes did not show significant departure from the expectation based on complete random association. The possible causes for the establishment of these multilocus associations were discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00288812
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Polymorphisms of α-amylase activity in barley landraces and cultivars from China (1990)
    Springer
    Euphytica 48 (1990), S. 245-251 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; barley ; α-amylase activity ; analysis of variance ; covariance analysis ; China
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary α-Amylase activity was assayed by measuring reducing power equivalent for 80 accessions of cultivated barley, Hordeum vulgare L., representing major barley growing areas of China. Replications were applied at two different levels of the experiment and enzyme activity was assayed on four consecutive days starting on the 6th day after germination. The area under the curve formed by connecting the four data points was integrated as the measurement of α-amylase activity. The results established that there was extensive variation in α-amylase activity in cultivated barley; about three-fold difference existed among accessions assayed. Comparisons were also made between six- and two-rowed, and between covered and naked barleys. The results showed that high α-amylase activity was not necessarily associated with six-rowed type, and that covered barleys were slightly higher in α-amylase activity than naked ones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00023657
    Library Location Call Number Volume/Issue/Year 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...