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With reference to plants, gynogenesis refers to :

  • A.Initiation of gynoecium
  • B.Development of gynoecium
  • C.Development of haploid plants from the egg cell of unfertilized female gametophyte in vitro
  • D.Development of an ovary

Answer: C

Gynogenesis is the development of haploid plants from the egg cell of unfertilized female gametophyte in vitro.

In plant tissue culture, haploids can be raised from either gametophyte. Androgenesis uses anthers or pollen; gynogenesis uses unpollinated ovaries or ovules, inducing the egg (or another embryo sac cell) to develop without fertilisation. It is used in crops such as onion, sugar beet and gerbera where anther culture works poorly, and the haploids are doubled to give homozygous lines for breeding.

Initiation and development of the gynoecium, or of an ovary, are normal flower development, and the word is not used for them.

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