Molecular Biology and Genetics / Moleküler Biyoloji ve Genetik

Permanent URI for this collectionhttps://hdl.handle.net/11147/9

Browse

Filters

2011 - 20172

Settings

Access type: Open accessSubject: search.filters.subject.Core collection

Search Results

Now showing 1 - 2 of 2
  • Article
    Citation - WoS: 17
    Citation - Scopus: 20
    Molecular Genetic Diversity of the Turkish National Hazelnut Collection and Selection of a Core Set
    (Springer Verlag, 2017) Öztürk, Süleyman Can; Balık, Hüseyin İrfan; Kayalak Balık, Selda; Kızılcı, Gökhan; Duyar, Ömür; Doğanlar, Sami; Frary, Anne
    European hazelnut (Corylus avellana L.) is an economically and nutritionally important nut crop with wild and cultivated populations found throughout Europe and in parts of Asia. This study examined the molecular genetic diversity and population structure of 402 genotypes including 143 wild individuals, 239 landraces, and 20 cultivars from the Turkish national hazelnut collection using simple sequence repeat (SSR) markers. A total of 30 SSR markers yielded 407 polymorphic fragments. Diversity analysis of the Turkish hazelnut genotypes indicated that they fell into three subpopulations according to ad hoc statistics and neighbor-joining algorithm. Although all cultivars clustered together, they overlapped with the wild accessions and landraces. Thus, the dendrogram, principal coordinate, and population structure analyses suggest that they share the same gene pool. A total of 78 accessions were selected as a core set to encompass the molecular genetic and morphological diversity present in the national collection. This core set should have priority in preservation efforts and in trait characterization.
  • Article
    Citation - WoS: 9
    Citation - Scopus: 13
    Determination of Genetic Diversity in Watermelon [citrullus Lanatus (thunb.) Matsum & Nakai] Germplasm
    (Southern Cross Publishing and Printing Pty Ltd, 2011) Ulutürk, Zehra İpek; Frary, Anne; Doğanlar, Sami
    The genetic diversity and relatedness of 90 watermelon (Citrullus lanatus var. lanthus and Citrullus. lanatus var. citroides) accessions were molecularly characterized using 30 sequence-related amplified polymorphism (SRAP) marker combinations. The accessions were collected from Turkey (59 accessions) and other regions of the world by the United States Department of Agriculture (USDA) and the molecular data were analysed using UPGMA (Unweighted Pair Group Method Analysis). The SRAP combinations were highly polymorphic (97%) with 87 polymorphic bands determined among 201 amplified fragments (43%). The UPGMA analysis characterized five major clusters (A, B, C, D and E). While minimum genetic similarity among groups A, B and C was high (83%), group E was the most distant with 63% genetic similarity. Principal component analysis (PCA) was performed and used to produce a two-dimensional plot from which two main groups could be distinguished. Based on the analyses, genetic diversity of watermelons was very low and Turkish watermelons were not distinct from other countries' accessions. These results could be used for generation of a core collection of watermelon by elimination of redundant accessions and for watermelon breeding by helping to identify useful, genetically distinct lines. In addition, the study indicated that SRAP markers are useful for analysing genetic diversity in crops like watermelon which have low variability.