Mapping of QTLs associated with frost tolerance in olive (Olea europaea L.)

Authors

ÖZNUR ÇETİNFollow
NURENGİN METEFollow
HANDAN ÖLMEZFollow
HATİCE GÜLENFollow

Abstract

The olive (Olea europaea L.) is widely distributed due to its high adaptability to different environmental conditions. However,in recent years, sudden extreme temperature decreases and frost damage have caused significant yield and quality losses in some regions.This situation has led to the development of varieties with high frost tolerance, suitable for regions where cold damage may occur.It takes many years to develop varieties using classical breeding methods in olives. Therefore, early selection should be made usingbiotechnological methods. Markers about any trait provide a great advantage, especially in plant species with a very long juvenile sterilityperiod, as they allow for a selection of nonpurpose plants in the early stage of the breeding process. The elucidation of the molecularmechanism associated with frost stress is important in laying the groundwork for breeding studies. To determine the locations ofgenes controlling frost tolerance in olives on chromosomes, linkage Quantitative Trait Loci (QTL) and association mapping studieswere performed on leaf tissues of Memecik × Uslu hybrids (104 genotypes) subjected to frost tests under controlled conditions in thelaboratory. Twenty-three linkage groups (LG) exactly matching the haploid chromosome number (n = 23) of the olive were obtained forthe maternal parent Memecik and 26 LG for the paternal parent Uslu. A total of 4377 markers were mapped for the Memecik cultivarand 4664 markers for Uslu. The total number of markers mapped for both parents was 9041. This study investigated candidate QTLsassociated with frost tolerance in the olive.

Author ORCID Identifier

ÖZNUR ÇETİN: 0000-0003-4252-0357

NURENGİN METE: 0000-0003-4357-8614

HANDAN ÖLMEZ: 0000-0003-4577-8804

HATİCE GÜLEN: 0000-0001-7586-310

DOI

10.55730/1300-011X.3257

Keywords

Olive (Olea europaea L.), frost stress, cultivar, breeding, biotechnology

First Page

182

Last Page

193

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Recommended Citation

ÇETİN, ÖZNUR; METE, NURENGİN; ÖLMEZ, HANDAN; and GÜLEN, HATİCE (2025) "Mapping of QTLs associated with frost tolerance in olive (Olea europaea L.)," Turkish Journal of Agriculture and Forestry: Vol. 49: No. 1, Article 14. https://doi.org/10.55730/1300-011X.3257
Available at: https://journals.tubitak.gov.tr/agriculture/vol49/iss1/14