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A typical apple tree reaches age 6 to 8 in this period. Prominent primary growth and a significant number of root sucker growth are seen in this period. [7] Period II involves more growth and fruit bearing. [7] Wild apple trees usually reach age 10 to 12 in this period. [7]
Malus sieboldii, commonly called Siebold's crab, [1] Siebold's crabapple or Toringo crabapple, is a species of crabapple in the family Rosaceae. Taxonomy
Malus floribunda, common name Japanese flowering crabapple, [1] [2] Japanese crab, [3] purple chokeberry, [2] or showy crabapple, [2] originates from Japan and East Asia. It may be a hybrid of M. toringo with M. baccata , in which case it would be written as Malus × floribunda .
Malus baccata is an Asian species of apple known by the common names Siberian crab apple, [2] Siberian crab, [3] Manchurian crab apple and Chinese crab apple. [ 4 ] [ 5 ] [ 6 ] It is native to many parts of Asia, but is also grown elsewhere as an ornamental tree and for rootstock .
Malus coronaria often is a bushy shrub with rigid, contorted branches, but frequently becomes a small tree up to 10 metres (33 feet) tall, with a broad open crown. Its flowering time is about two weeks later than that of the domestic apple, and its fragrant fruit clings to the branches on clustered stems long after the leaves have fallen.
A separate project was initiated by C.S. Crandall of the University of Illinois to breed scab-resistant apples by introducing the VF gene from the crabapple Malus floribunda. His work has been continued by the PRI disease resistant apple breeding program with great success. [5] Among the scab-resistant apples that carry the VF gene are ...
Malus × zumi (or Malus zumi) is a naturally occurring hybrid species of crabapple in the family Rosaceae, native to Japan, and a garden escapee in the US state of Ohio. [1] Its parents are Manchurian crab apple Malus mandshurica and Siebold's crabapple Malus sieboldii . [ 2 ]
Malus trilobata, the Lebanese wild apple, erect crab apple or three-lobed apple tree, is a species in the family Rosaceae in the genus Malus. [2] Some authorities place it in the segregate genus Eriolobus , as E. trilobatus .