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Pecan is a 32-chromosome species (1N = 16) that readily hybridizes with other 32-chromosome members of the Carya genus, such as Carya ovata, Carya laciniosa, Carya cordiformis and has been reported to hybridize with 64-chromosome species such as Carya tomentosa. Most such hybrids are unproductive.
This article is a list of diseases of pecan trees (Carya illinoinensis). Bacterial diseases. Bacterial diseases; Crown gall Agrobacterium tumefaciens:
Carya laciniosa, the shellbark hickory, in the Juglandaceae or walnut family is also called kingnut, big, bottom, thick, or western shellbark, attesting to some of its characteristics. It is a slow-growing, long-lived tree, hard to transplant because of its long taproot, and subject to insect damage.
The nine or ten genera in the family have a total of around 50 species, [3] and include the commercially important nut-producing trees walnut (Juglans), pecan (Carya illinoinensis), and hickory (Carya). The Persian walnut, Juglans regia, is one of the major nut crops of the world.
The larvae feed on Carya species, including Carya illinoensis. Late stage larvae feed on the terminal leaflets of their host plant. They pull together the three most external leaflets with silk. They then construct a tube of frass and silk which is attached to the underside of the midrib of the central leaflet. They then feed on the three leaflets.
Carya ovata, the shagbark hickory, is a common hickory native to eastern North America, with two varieties. The trees can grow to quite a large size but are unreliable in their fruit output. The trees can grow to quite a large size but are unreliable in their fruit output.
Hickory is a common name for trees composing the genus Carya, which includes 19 species accepted by Plants of the World Online. [ 3 ] Seven species are native to southeast Asia in China , Indochina , and northeastern India ( Assam ), and twelve are native to North America .
The pecan weevil, Curculio caryae (Coleoptera: Curculionidae) is an obligate feeder on the nuts of North American hickories and pecans (Carya species), most widely recognized as an economically important pest of the pecan, Carya illinoinensis (Fagales: Juglandaceae).