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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 .
Pollination of fruit trees is required to produce seeds with surrounding fruit. It is the process of moving pollen from the anther to the stigma, either in the same flower or in another flower. Some tree species, including many fruit trees, do not produce fruit from self-pollination, so pollinizer trees are planted in orchards.
Other staple food crops, like bananas and plantains, are propagated from cuttings, and produce fruit without pollination (parthenocarpy). Further, foods such as root vegetables and leafy vegetables will produce a useful food crop without pollination, though pollination may be required for the purpose of seed production or breeding.
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.
While the Bradford pear tree is a sterile cultivar that can’t pollinate itself, it can cross-pollinate with other types of pear trees to create a wild hybrid tree. These vigorous hybrids produce ...
Insect pollinators, like bees, are large contributors to crop production, over 200 billion dollars worth of crop species are pollinated by these insects. [71] Pollinators are also essential because they improve crop quality and increase genetic diversity, which is necessary in producing fruit with nutritional value and various flavors. [79]
Fermented pear juice is called perry or pear cider and is made in a way that is similar to how cider is made from apples. [5] [10] Perry can be distilled to produce an eau de vie de poire, a colorless, unsweetened fruit brandy. [61] Pear purée is used to manufacture snack foods such as Fruit by the Foot and Fruit Roll-Ups. [62] [63] [64]
The tree of the Concorde pear is upright and moderately vigorous. It flowers about five days after its parent varieties, and like the Comice is a late harvest pear. [3] It is partially self-fertile, and is classed as group 3/4 in the RHS pollination groups.
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