Individual-specific DNA fragment patterns were obtained by hybridization of endonuclease-digested apple (Malus ×domestica Borkh.) DNA with a probe (pAR72) derived from the rDNA spacer region of the `White Angel' crab apple. Fragment detection was carried out with a nonradioactive method, using a horseradish peroxidase-catalyzed luminol oxidation. Paternity could be inferred by comparison of the fragment pattern generated by a seedling with those derived from putative parents.
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