ABSTRACT. The artichoke (Cynara scolymus L.) is an important food and medicinal crop that is cultivated in Mediterranean countries. Morphological characteristics, such as head shape and diameter, leaf shape, and bract shape, are mainly affected by environmental conditions. A molecular marker approach was used to analyze the degree of polymorphism between artichoke hybrid lines. The degree of genetic difference among three artichoke hybrids was evaluated using random amplified polymorphic DNA-PCR (RAPD-PCR). In this study, the DNA fingerprints of three artichoke lines (A13-010, A11-018, and A12-179) were generated, and a total of 10 decamer primers were applied for RAPD-PCR analyses. Polymorphism (16.66 to 62.50%) was identified using eight arbitrary decamers and total genomic DNA extracted from the hybrids. Of the 59 loci detected, there were 25 polymorphic and 34 monomorphic loci. Jaccard's similarity index (JSI) ranged between 1.0 and 0.84. Based on the unweighted pair group method with arithmetic mean (UPGMA) similarity matrix and dendrogram, the results indicated that two hybrids (A13-010 and A11-018) were closely related to each other, and the A12-179 line showed more divergence. When identifying correct accessions, consideration of the genetic variation and genetic relationships among the genotypes are required. The RAPD-PCR fingerprinting of artichoke lines clearly showed that it is possible to analyze the RAPD patterns for correlation between genetic means and differences or resemblance between close accessions (A13-010 and A11-018) at the genomic level.

Ten of ISSRs (inter-Simple Sequence Repeats) markers were used for revealing genetic relationship, genetic diversity and DNA fingerprint of ten bread wheat (Triticumaestivum L.) genotypes. Primers varied among them in giving unique DNA fingerprint hence primers HB12, UBC811andUBC852 gave unique fingerprint for all ten studied wheat genotypes, others varied between 2-6 fingerprint genotypes while primer 17899A gave no unique fingerprint. High genetic distance was 0.661 while low genetic distance was 0.131.Cluster analysis (Phylogenetic tree) grouped studied genotypes in to two main groups ,the first small one included only one genotype while the other large main group included the rest genotypes which further divided in to two sub groups .ISSRs represent good marker for revealing genetic diversity and genotypes fingerprinting. The results could help plant breeder in breeding programs.

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Ten from molecular marker ISSRs, (Inter, - Simple, Sequence, Repeats.) were used to find genetic, diversity, genetic* relationship, and DNA* fingerprint* of nine Okra (Abelmoschus esculentus) genotypes. Primers varied among them in giving unique DNA fingerprints, primers (UBC-809, HB12, and HBS10) gave a unique fingerprint for one genotype of okra, while primers (844A, UBC808) give unique fingerprint for four genotypes. High genetic distance was (0.722) between  Egypt and Hasnawia while low genetic distance was (0.074) between Hasnawia and Lahluba. Cluster analysis (Phylogenetic tree) grouped studied genotypes in to two main cluster, the first large one included six genotype(Mosulia , Houseagrl, Khnisiraa ,Hasnawia ,Lahluba and Batra) and other small one includes three genotype (Soutl,Egypt and Zasco seed).ISSR marker could reveal genetic relationship in studied genotypes according to their origin, thus it gave an excellent tool to breeding programs help breeders .