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For commercial purposes, including botanical evaluation, apple cultivars are propagated by clonal grafting onto rootstocks. Apple trees grown without rootstocks tend to be larger and much slower to fruit after planting. Rootstocks are used to control the speed of growth and the size of the resulting tree, allowing for easier harvesting.
The A. glabra tree was introduced to North Queensland sometime around 1912 as both a rootstock for similar Annona species such as Annona atemoya, the custard apple. [12] A. glabra seedlings carpet the banks and prevent other species from germinating or thriving. It also affects farms as it grows along fencelines and farm drains.
EMLA characteristics are often different from the parent "M" rootstock. Note that nearly all the apple rootstocks in the industry are now virus free. [1] "CG" or "G" designates Cornell-Geneva stocks which are those developed via the Cornell and USDA collaboration at the New York Agricultural Experiment Station in Geneva, NY. The "G" is the old ...
An open-centred crown on a short trunk of less than 1 metre (3 ft 3 in). This is a traditional and popular form for apple trees. Bush trees are easy to maintain and bear fruit at a young age. Final height is between 2 metres (6 ft 7 in) and 5.5 metres (18 ft), depending on which rootstock is used. [1]
Some crabapples are used as rootstocks for domestic apples to add beneficial characteristics. [8] For example, the rootstocks of Malus baccata varieties are used to give additional cold hardiness to the combined plants for orchards in cold northern areas. [9] They are also used as pollinizers in apple orchards. Varieties of crabapple are ...
Antonovka apples. Antonovka is a cultivar of vernacular selection, which began to spread from the region of Kursk in Russia during the 19th century. [4] While the fruit-bearing trees have not received a wide degree of recognition outside the former Soviet Union, many nurseries do use Antonovka rootstocks, since they impart a degree of winter-hardiness to the grafted varieties.