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Abstract

Two triploid apple (Malus domestica Borkh.) cultivars, ‘Spigold’ (‘Red Spy’ x ‘Golden Delicious’) and ‘Jonagold’ (‘Golden Delicious’ x ‘Jonathan’), and their parental cultivars were analyzed for a number of isozyme systems by starch gel electrophoresis. The banding pattern and intensity of one isozyme system, 6-phosphogluconate dehydrogenase (6PGD), provided strong evidence that the parent contributing the 2n gamete in both 3x cultivars was the female.

Open Access