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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 aquatica, the bitter pecan or water hickory, is a large tree, that can grow over 30 metres (98 ft) tall of the Juglandaceae or walnut family. In the American South it is a dominant plant species found on clay flats and backwater areas near streams and rivers. The species reproduces aggressively both by seed and sprouts from roots and from ...
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.
Olla v-nigrum have also been used in conjunction with pesticides for the control of pecan aphids on Carya illinoensis. This includes species such as the black pecan aphid (Melanocallis caryaefoliae), yellow pecan aphid (Monelliopsis pecanis), and the blackmargined aphid (Monellia caryella).
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.
Carya cordiformis K.Koch [1]: 72 Bitternut Hickory: Scattered state-wide Least Concern: Juglandaceae: Carya glabra Sweet [1]: 73 Pignut Hickory: State-wide Least Concern: Juglandaceae: Carya laciniosa (Michaux f.) Loudon [1]: 74 Shellbark Hickory: Infrequently in northwest Georgia Least Concern: Juglandaceae: Carya ovalis (Wangenh.) Sarg.
The overstory includes willows, Nuttall oak tree (Quercus texana), overcup oak tree (Quercus lyrata), water oak (Quercus nigra), sweet gum, green ash (Fraxinus pennsylvanica), persimmon, sugarberry (Celtis laevigata), honey locust (Gleditsia triacanthos), sweet pecan (Carya illinoensis), bitter pecan, elm, cypress, and tupelo gum (Nyssa aquatica).