István Cernák

Learn More
Molecular markers have proved to be valuable tools in the characterization and evaluation of genetic diversity within and between species and populations. Marker systems differ in their information content, which depends on polymorphism. The concept of polymorphism is used to define genetic variation in a population, which has been extensively studied in(More)
BACKGROUND The plant pathogenic fungus, Sphaeropsis visci a dark-spored species of Botryosphaeriaceae, which causes the leaf spot disease of the European mistletoe (Viscum album). This species seems to have potential as a tool for biological control of the hemiparasite. For the rapid detection of S. visci haplotypes we tested a direct PCR assay without(More)
Common ragweed (Ambrosia artemisiifolia L.) is the most frequent weed in the Carpathian Basin and is spreading fast in other parts of Europe. In recent years, besides the wild type, a mutant genotype resistant to atrazine herbicides has evolved and is now widespread in many areas. The present study demonstrates that the atrazine resistance of ragweed is(More)
UNLABELLED PREMISE OF THE STUDY Intron Targeting (IT) primers were developed for potato using expressed sequence tags (EST) and NCBI database records to study genetic diversity. • METHODS AND RESULTS Twenty-nine polymorphic intron targeting (IT) markers were generated and characterized from 30 samples of potato and 22 samples of Solanum nigrum to(More)
Identification of quantitative trait loci (QTL) responsible for stress tolerance could help to develop new tolerant potato cultivars through markers-assisted selection. The objective of the research was to identify and map loci that may play major role in the control of osmotic stress tolerance in potato under in vitro vegetative growth conditions.(More)
The globally widespread genus Nymphaea exhibits a wide range of morphological and taxonomical diversity. The intrusion of a cultivated variety by progressive propagation and its affect on aquatic habitat is demonstrated in this case study. We have studied the genetic diversity, population, and stand structure of the neophyte Nymphaea × ‘Panama Pacific’ as(More)
In this study molecular markers linked to the Rysto gene, which originates from the wild potato species Solanum stoloniferum and confers extreme resistance against PVY, were identified and the applicability of recently published Rysto, markers was analyzed. Three RAPD markers covering a total distance of 8.60 cM were detected in this experiment. The closest(More)
This work is a detailed study of the infection of fungal biotrophic pathogens causing powdery mildew diseases on introgression lines originating from the intergeneric hybridisation between wheat and barley (Triticum aestivum L. × Hordeum vulgare L.). Powdery mildew fungi are among the most widespread biotrophic pathogens of plants also and infect dicot and(More)
Bidirectional allele-specific PCR (Bi-PASA) was used to detect a point mutation causing triazine resistance in common ragweed (Ambrosia artemisiifolia). The external primers amplified a 278 bp standard DNA fragment in all genotypes. In the susceptible S264S genotypes, a 208 bp fragment was expected while in resistant S264G common ragweed genotypes a 109 bp(More)
Different molecular markers are routinely used in studies of potato (Solanum tuberosum) and the genus Solanum in general. Genome sequence databases provide potential to design new markers for various applications. Here we present the application of a recently developed core set of nuclear intron-targeting (indel) markers. These markers are based on the fact(More)
  • 1