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Abstract Maize ( Zea mays L.) is the third most important cereal crop in the world because of its nutritional value and industrial benefits. Molecular markers are used mainly by the breeders to study the genetic variability of genotypes and its application in the breeding process. Two types of molecular markers, 10 random amplified polymorphic DNA (RAPD) primers and 10 start codon target (SCoT) primers, were assayed to determine the genetic diversity of 25 Slovak maize lines and 25 maize cultivars. A high level of polymorphism was found with both RAPD and SCoT markers, which was confirmed by high average polymorphism information content (PIC) values using both techniques. The efficiency of individual marker techniques in the detection of genotype diversity can be compared by calculating the marker index (MI), detecting diversity index (DDI), discriminating power, resolving power (RP) and other indices. A higher MI (11.788), DDI (2.358) and RP (53.08) value was achieved by the SCoT technique compared to the RAPD method. Three joint dendrograms and PCoA plots constructed based on RAPD, SCoT and both methods combined confirmed the unambiguous separation of maize lines and cultivars from each other. The results obtained from the RAPD and SCoT analysis can be used for the selection of potentially suitable biological sources for further marker-assisted breeding.
Chňapek et al. (Thu,) studied this question.
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