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    Exploring genetic diversity and population structure of Turkish black sea region maize (Zea mays L.) germplasm using SSR markers
    (Erzincan Binali Yıldırım Üniversitesi, Fen Bilimleri Enstitüsü, 2022) Baran, Nurettin; Nadeem, Muhammad Azhar; Yılmaz, Abdurrahim; Andırman, Mehtap; Kurt, Fırat; Temiz, Mefhar Gültekin; Baloch, Faheem Shehzad
    This study aimed to investigate the genetic diversity and population structure of 32 local maize genotypes collected from the Black Sea Region of Turkey using SSR markers. 14 most polymorphic primers yielded a total of 42 bands. An average of 3 alleles per SSR primer was detected, and the number of alleles varied from 1 (phi022) to 6 (umc1571). The unweighted pair-group method with arithmetic means (UPGMA) clustering divided maize accessions into three main populations. According to Nei's genetic distances, DZ-M-145 (Corum) and DZ-M-20 (Trabzon) genotypes were the closest (0.03) genetically related populations, while DZ-M-68 (Artvin) and DZ-M-55 (Rize) were the most genetically distant (0.63) populations. The study identified molecular genetic diversity not mentioned for maize plants from the Black Sea.
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    Exploring the genetic diversity and population structure of upland cotton germplasm by iPBS-retrotransposons markers
    (Springer Science and Business Media, 2023) Baran, Nurettin; Shimira, Flavien; Nadeem, Muhammad Azhar; Altaf, Muhammad Tanveer; Andırman, Mehtap; Baloch, Faheem Shehzad; Temiz, Mefhar Gültekin
    Background: Upland cotton is one of the utmost significant strategic fiber crops, and play a vital role in the global textile industry. Methods and results: A total of 128 genotypes comprised Gossypium hirsutum L, Gossypium barbadense L., and pure lines were used to examine genetic diversity using iPBS-retrotransposon markers system. Eleven highly polymorphic primers yielded 287 bands and 99.65% polymorphism was recorded. The mean polymorphism information content was estimated at 0.297 and the average diversity indices for the effective number of alleles, Shannon’s information index, and overall gene diversity were 1.481, 0.443, and 0.265, respectively. The analysis of molecular variance (AMOVA) revealed that 69% of the genetic variation was within the population. A model-based STRUCTURE algorithm divided the entire germplasm into four populations and one un-classified population, the genotypes G42 (originating in Egypt) and G128 (originating in the United States), showed the highest genetic distance (0.996) so these genotypes could be suggested for breeding programs as parental lines. Conclusions: This is the first investigation using an iPBS-retrotransposon marker system to examine the genetic diversity and population structure of upland cotton germplasm. The rich diversity found in upland cotton germplasm could be exploited as a genetic resource when developing breeding programs and could also help with efforts to breed cotton around the world. These findings also show the applicability and effectiveness of iPBS-retrotransposons for the molecular characterization of cotton germplasm.