The ''ability to choose" gave birth to the idea of selection. This is
the most primitive and by and large the most successful method of plant
breeding. Selection as a part of plant breeding started with the
domestication of plants by early man. Domestication refers to the
process of bringing wild species under human management. Not all
selection over the years have been human influenced—many of the
important crop species have resulted from the natural selection process,
which is an integral part of evolution. As human knowledge of
agriculture grew, man started shuffling crop species from one
geographical terrain to another, thus making new introductions.
Introduction of plants is the earliest of the methods followed in plant
breeding. Established plants of one area are taken to the newer area for
the use of mankind. Quarantine has to play important role in
introduction to ensure that the material which is to be introduced
should not carry diseases or pests with it.
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