Geographical description and molecular characterization of genetic structure and diversity using a 6K SNP array in Turkish oat germplasm
Yükleniyor...
Dosyalar
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Canadian Science Publishing, Nrc Research Press
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Cultivated oat (Avena sativa L. and Avena byzantina Koch) is native to Turkey, a secondary center of oat diversity. Oat breeding has received less attention relative to other cereals. In this work, the diversity of oat landraces collected from different regions of Turkey as well as obtained from different gene banks was investigated using 3293 high quality SNP markers. Expected heterozygosity (Hs), observed heterozygosity (Ho), inbreeding coefficient (Fis), and overall genetic diversity (Ht) of the oat gene pool were 0.22, 0.01, 0.96, and 0.38, respectively. The value of the genetic differentiation (Fst) metric for genetic structure was 0.41 and indicated that kinship was more of a determinant for population structure than the geographical provenance. The populations from different geographical regions shared a great proportion of genetic diversity. Clustering using model-based STRUCTURE, principal coordinates (PCoA), and neighbour-joining (NJ) algorithms were mostly comparable except for five discrepantly clustered accessions in NJ and PCoA relative to STRUCTURE, which can be attributed to the relatively reduced resolution power in the NJ and PCoA approaches. SNP markers partitioned all oat accessions into four main groups (A, B, C, and D) with 10 unclassified accessions. Some landraces were identical based on genetic distance and can represent duplications in gene banks. The data presented in this work represent the initial results on genetic diversity as investigated in Turkish oat, and are an important resource for systematicians, geneticists, and breeders interested in Turkish oat germplasm. These results are expected to open new opportunities for further studies in oat genomics and cultivar development.
Açıklama
DUMLUPINAR, Ziya/0000-0003-3119-6926; Habyarimana, Ephrem/0000-0003-2731-2744; Gungor, Huseyin/0000-0001-6708-6337; BALOCH, Faheem Shehzad/0000-0002-7470-0080
WOS: 000458156000002
WOS: 000458156000002
Anahtar Kelimeler
oat, landraces, SNP, diversity, population structure
Kaynak
Canadian Journal Of Plant Science
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
99
Sayı
1
