DNA Fingerprint Analysis of Roses

in Journal of the American Society for Horticultural Science
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  • 1 The Kennedy-Leigh Centre for Horticultural Research and The Otto Warburg Center for Biotechnology in Agriculture, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot 76-100, Israel

Mini- and microsatellite probes were hybridized to DNA of 24 rose (Rosa×hybrida) genotypes. The resultant DNA fingerprints were shown to be genotype-specific, thereby enabling cultivar identification at the DNA level. Restriction enzyme Dra I yielded the most informative band patterns. Full-sib family analysis of DNA fingerprints revealed 32 parental-specific bands out of the 128 observed in the parents. These bands were revealed cumulatively by phage (M13), human (33.6), and oligonucleotide (GACA)4 probes. Only one pair of these loci was found to be allelic, and no linked pairs were detected in the progeny analyzed. The probability of two offspring from this cross having identical DNA fingerprints was calculated to be 2 × 10-8.

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