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The Williams' bon chrétien pear, commonly called the Williams pear, or the Bartlett pear in the United States and Canada, is a cultivar (cultivated variety) of the species Pyrus communis, commonly known as the European pear. The fruit has a bell shape, considered the traditional pear shape in the west, and its green skin turns yellow upon ...
For the plant, the pollinizer, this can be an important mechanism for sexual reproduction, as the pollinator distributes its pollen. Few flowering plants self-pollinate ; some can provide their own pollen (self fertile), but require a pollinator to move the pollen; others are dependent on cross pollination from a genetically different source of ...
Parentage: Coscia x Williams (Bartlett) made by Morettini. Tree is vigorous. Ripens 20 days before Bartlett. One of the best early pears. eating: 100–125 Carmen [63] [64] Italy: cross made 1980, selected 1989, introduced 2000: Pick 18 days before Bartlett. eating: Cascade [65] Oregon, US: 1975: A red-skinned pear. Parentage Bartlett Max Red x ...
The Callery pear, or Bradford pear, is one of those vampires. Over the years, Callery pear (Pyrus calleryana) has become one of the most widely planted ornamental trees in the US. But over that ...
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 .
Trees that are cross-pollinated or pollinated via an insect pollinator produce more fruit than trees with flowers that just self-pollinate. [1] In fruit trees, bees are an essential part of the pollination process for the formation of fruit. [2] Pollination of fruit trees around the world has been highly studied for hundreds of years. [1] Much ...