The wild ancestor of Malus domestica is Malus sieversii (which has no common name), a tree still found wild in the mountains of Central Asia in southern Kazakhstan, Kyrgyzstan, Tajikistan, and Xinjiang, China. M. sieversii resists many diseases and pests that affect domestic apples, and research with it to develop new disease-resistant apples is continuing.













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Other species that were previously thought to have made contributions to the genome of the domestic apples are Malus baccata and Malus sylvestris, but there is no hard evidence for this in older apple cultivars. These and other Malus species have been used in some recent breeding programmes to develop apples suitable for growing in climates unsuitable for M. domestica, mainly for increased cold tolerance.

Above Images Are From The U.S.D.A.




















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