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Over 3000 cultivars of the pear are known. [1] The following is a list of the more common and important cultivars, with the year and place of origin (where documented) and an indication of whether the pears are for cooking, eating, canning, drying or making perry.
The majority of pollinators of pear trees are honey bees, although pears are also visited by blow flies and hoverflies. [1] In some areas, such as the Emilia-Romagna area of Italy, honeybees could not be used to pollinate pears due to the spread of fireblight in the 1990s, and Osmia cornuta were used as pollinators instead. [14]
Pyrus calleryana, also known as the Callery pear or Bradford pear, is a species of pear tree native to China and Vietnam, [2] in the family Rosaceae. It is most commonly known for its cultivar 'Bradford' and its offensive odor, widely planted throughout the United States and increasingly regarded as an invasive species .
Pyrus communis, the common pear, is a species of pear native to central and eastern Europe, and western Asia. [3]It is one of the most important fruits of temperate regions, being the species from which most orchard pear cultivars grown in Europe, North America, and Australia have been developed.
The pear tree and shrub are a species of genus Pyrus / ˈ p aɪ r ə s /, in the family Rosaceae, bearing the pomaceous fruit of the same name. Several species of pears are valued for their edible fruit and juices, while others are cultivated as trees. The tree is medium-sized and native to coastal and mildly temperate regions of Europe, North ...
Pyrus elaeagrifolia, the oleaster-leaved pear, is a species of wild pear plant in the genus Pyrus , the specific name referring to the similarity of its foliage to that of Elaeagnus angustifolia - the so-called 'wild olive' or oleaster. It is native to Albania, Bulgaria, Greece, Romania, Turkey, and Crimea. [2]
Photos by Stickpen, Walter Siegmund, Cstubben, Lionnel, Derek Ramsey, Jebulon, Dinkum, Forest & Kim Starr, S . Zenner, and Jerry Friedman. Pollinator-mediated selection is an evolutionary process occurring in flowering plants, in which the foraging behavior of pollinators differentially selects for certain floral traits. [1]
Pyrus ussuriensis, also known as the Ussurian pear, Harbin pear, and Manchurian pear, is a species of flowering plant in the family Rosaceae. [1] It is native to Korea, Japan, china, and the Ussuri River area of far eastern Russia. It has flowers in spring that are slightly pink when budding and then turn white. [2]
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