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  • Intra- and interspecific variation  (2)
  • Chestnut Selections  (1)
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Materialart
Erscheinungszeitraum
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Genetic relationships in Lens species and parentage determination of their interspecific hybrids using RAPD markers (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 1091-1098 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Key words Lens culinaris ; Wild species ; RAPD ; Intra- and interspecific variation ; Genetic distance ; Split decomposition
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract  Broadening of the genetic base and systematic exploitation of heterosis in cultivated lentils requires reliable information on genetic diversity in the germ-plasm. The ability of random amplified polymorphic DNA (RAPD) to distinguish among different taxa of Lens was evaluated for several geographically dispersed accessions/cultivars of four diploid Lens species. This study was carried out to assess whether RAPD data can provide additional evidence about the origin of the cultivated lentil and to measure genetic variability in lentil germplasm. Three cultivars of Lens culinaris ssp. culinaris, including one microsperma, and two macrosperma types, and four wild species (L. culinaris ssp. orientalis, L. odemensis and L. nigricans) were evaluated for genetic variability using a set of 1 11-mer and 14 random 10-mer primers. One hundred and fifty-eight reproducible and scorable DNA bands were observed from these primers. Genetic distances between each of the accessions were calculated from simple matching coefficients. Split decomposition analysis of the RAPD data allowed construction of an unrooted tree. This study revealed that (1) the level of intraspecific genetic variation in cultivated lentils is narrower than that in some wild species. (2) L. culinaris ssp. orientalis is the most likely candidate as a progenitor of the cultivated species, (3) L. nigricans accession W6 3222 (unknown) and L. c. ssp. orientalis W6 3244 (Turkey) can be reclassified as species of L. odemensis and (4) transmission of genetic material in Lens interspecific hybrids is genotypically specific, as identified by the RAPD markers in our study.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s001220050235
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Genetic relationships in Lens species and parentage determination of their interspecific hybrids using RAPD markers (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 1091-1098 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Lens culinaris ; Wild species ; RAPD ; Intra- and interspecific variation ; Genetic distance ; Split decomposition
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Broadening of the genetic base and systematic exploitation of heterosis in cultivated lentils requires reliable information on genetic diversity in the germplasm. The ability of random amplified polymorphic DNA (RAPD) to distinguish among different taxa of Lens was evaluated for several geographically dispersed accessions/cultivars of four diploid Lens species. This study was carried out to assess whether RAPD data can provide additional evidence about the origin of the cultivated lentil and to measure genetic variability in lentil germplasm. Three cultivars of Lens culinaris ssp. culinaris, including one microsperma, and two macrosperma types, and four wild species (L. culinaris ssp. orientalis, L. odemensis and L. nigricans) were evaluated for genetic variability using a set of 1 11-mer and 14 random 10-mer primers. One hundred and fifty-eight reproducible and scorable DNA bands were observed from these primers. Genetic distances between each of the accessions were calculated from simple matching coefficients. Split decomposition analysis of the RAPD data allowed construction of an unrooted tree. This study revealed that (1) the level of intraspecific genetic variation in cultivated lentils is narrower than that in some wild species. (2) L. culinaris ssp. orientalis is the most likely candidate as a progenitor of the cultivated species, (3) L. nigricans accession W6 3222 (unknown) and L. c. ssp. orientalis W6 3244 (Turkey) can be reclassified as species of L. odemensis and (4) transmission of genetic material in Lens interspecific hybrids is genotypically specific, as identified by the RAPD markers in our study.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00224054
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Origin and relationships of New Zealand chestnut (Castanea sp.Fagaceae) selections reflect patterns of graft failure (1999)
    Springer
    Plant systematics and evolution 218 (1999), S. 193-204 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Fagaceae ; Castanea ; Chestnut Selections ; New Zealand ; origin ; relationships ; graft failure
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Graft failure that occurs in the clonal propagation of chestnuts is a practical problem which has arisen in recent years. Several hypotheses have been put forward to explain reasons for the failure but none have focused on origin and relationships of cultivars. This study was carried out to determine whether relationships of New Zealand chestnut selections and their origin reflect patterns of graft failure within the selections. Two different character data sets, random amplified polymorphic DNA (RAPD) and morpho-nut, were employed for the analyses of the relationships between the chestnut selections. Four different analyses were done to generate trees depicting the relationships of the selections. These were: morpho-nut character, RAPD character, taxonomic congruence (combination of morpho-nut and RAPD trees), and character congruence (combination of morpho-nut and RAPD data sets). When graft failure data were mapped onto the majority rule consensus tree constructed from character congruence analysis, it was found that self graft incompatibility was reflected in the origin and relationships of the chestnut selections. Information on the affinities of the chestnut selections to introduced chestnut species showed that the selections that were mostly implicated in graft failure which are from the North Island had affinities with theCastanea crenata species. But the selections (from the South Island) that were placed withCastanea sativa as well as hybrids (“1002” and “1007” from the North Island) ofCastanea mollissima andC. crenata had no failed grafts. This finding indicates that graft failure in New Zealand chestnut selections does not occur by chance but is dependent on the origin and/or evolutionary history of the selections.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01089227
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
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