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Pears are fruits produced and consumed around the world, growing on a tree and harvested in late summer into mid-autumn. 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.
Plant reproduction is the production of new offspring in plants, which can be accomplished by sexual or asexual reproduction. Sexual reproduction produces offspring by the fusion of gametes , resulting in offspring genetically different from either parent.
In the absence of sexual reproduction, the genetic composition of plant material being multiplied remains essentially the same as its source plant. Clones of mother plants can be made with the exact genetic composition of the mother plant. Superior plants are selected and propagated vegetatively; the vegetative propagated offspring are used to ...
In flowering plants, autogamy has the disadvantage of producing low genetic diversity in the species that use it as the predominant mode of reproduction. This leaves those species particularly susceptible to pathogens and viruses that can harm it.
Differences between plant and animal physiology and reproduction cause minor differences in how they evolve. One major difference is the totipotent nature of plant cells, allowing them to reproduce asexually much more easily than most animals. They are also capable of polyploidy – where more than two chromosome sets are inherited from the ...
Bosc Pear, from The Pears of New York (1921) by Ulysses Prentiss Hedrick [1] The Beurré Bosc or Bosc is a cultivar of the European pear ( Pyrus communis ), originally from France or Belgium . Also known as the Kaiser , it is grown in Europe , Australia , British Columbia and Ontario , Canada , and the U.S. states of California , Washington ...
The salt water eliminates the need for a discoloration agent (like lemon juice or a citric acid compound like Fruit Fresh), and the pears maintain their structural integrity during freezing and ...
The Private Life of Plants is a BBC nature documentary series written and presented by David Attenborough, first shown in the United Kingdom from 11 January 1995. A study of the growth, movement, reproduction and survival of plants, it was the second of Attenborough's specialised surveys following his major trilogy that began with Life on Earth ...