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Many of the cottonwoods grown commercially are the hybrid of eastern cottonwood and black poplar, Populus × canadensis (hybrid black poplar or Carolina poplar). Cottonwood bark is often a favorite medium for artisans. The bark, which is usually harvested in the fall after a tree's death, is generally very soft and easy to carve.
Poplar is the species on which transgenesis has been most extensively tested solely in the laboratory, despite a very complex and large genome, which has also been the most extensively studied among trees. GMO poplars (interspecific hybrid Populus tremula x P. alba, female clones of the subspecies Cultivar/INRA line #717-1B4) have been created ...
[36] [37] [38] Researchers at the University of Manchester's Faculty of Life Sciences modified two genes in poplar trees, called PXY and CLE, which are responsible for the rate of cell division in tree trunks. As a result, the trees are growing twice as fast as normal, and also end up being taller, wider and with more leaves. [39]
Populus × canadensis, known as Canadian poplar or Carolina poplar, is a naturally occurring hybrid of Populus nigra and Populus deltoides. [2] It is a vigorous, broadly columnar, deciduous tree growing to 40 m (130 ft), which is commonly used by landscape architects.
Populus is a genus of 25–30 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere.English names variously applied to different species include poplar (/ ˈ p ɒ p l ər /), aspen, and cottonwood.
The hybrid with Populus alba (white poplar), known as grey poplar, Populus × canescens, is widely found in Europe and central Asia. Hybrids with several other aspens have also been bred at forestry research institutes in order to find trees with greater timber production and disease resistance (e.g. P. tremula × P. tremuloides, bred in ...
Populus × canescens, the grey poplar, is a hybrid between Populus alba (white poplar) and P. tremula (common aspen). It is intermediate between its parents, with a thin grey downy coating on the leaves , which are much less deeply lobed than the leaves of P. alba .
Populus balsamifera, commonly called balsam poplar, [3] bam, [4] bamtree, [2] eastern balsam-poplar, [5] hackmatack, [2] tacamahac poplar, [2] tacamahaca, [2] is a tree species in the balsam poplar species group in the poplar genus, Populus. The genus name Populus is from the Latin for poplar, and the specific epithet balsamifera from Latin for ...
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