Akademik Veri Yönetim Sistemi
Tez Türü: Doktora
Tezin Yürütüldüğü Kurum: Çukurova Üniversitesi, Fen Bilimleri Enstitüsü, Biyoteknoloji, Türkiye
Tez Danışmanı: Hakan Özkan
Tezin Onay Tarihi: 2016
Tezin Dili: İngilizce
Özet:
Agro-morphological, agronomical and
quality characteristics are the important traits for durum wheat. Understanding
the genetic control of those traits can help breeders to develop varieties with
improved characteristics. Fourteen of the above-mentioned characteristics were
investigated in 130 durum wheat genotypes, which were divided into four groups,
showing a wide range and significant variation. Variance analysis showed
significant differences for most of the studied traits. Significant
correlations were also observed between those traits. Analysis of molecular
variance (AMOVA) revealed that there was variation
within and among the groups of the genotypes studied. The weighted Neighbor-joining tree confirmed the groups
identified in the PCoA, showing high and wide diversity in the durum genotypes.
Structure analysis revealed that the studied genotypes were divided into five
groups with respect to the number of tree clusters. The mixed linear
model used for accurate marker trait associations revealed that 92 of the 144
MTAs (marker-trait associations) were
major MTAs, of which two were significantly associated with plant height (PH)
and (vitreous kernel count) VKC. Pleiotropic effects
were found in the MTAs. Taken together with the published genetic results, the
MTAs determined in this study could be the targets of marker-assisted selection
to improve many traits in durum wheat.