Walnut (Juglans regia L.) is one of the oldest trees with harvestable products known to humans and has a history dating to 7000 BC in Persia. Walnut breeding programs aim to release productive scion cultivars with disease resistance and high-quality nuts
Tree nuts are one of the oldest sources of food for man, birds, and wild animals (Woodroof1967), and their history is very rich. Ancient fossils prove their presence on earth long before man arrived (Jaynes1969). References to nut trees in ancient literature are numerous. Theophrastus, Gree...