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What are apomixis and polyembryony?

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What are apomixis and polyembryony?
  • 2 answers

Tanu Priya 5 years ago

Apomixis:-the process of formation of seed without fertilization is callled apomixis Polyembryony:-the process of development of more than one embryo in one ovule seed or fertilized ovum is called polyembrony

Yogita Ingle 5 years ago

Apomixis is a mechanism to produce seeds without fertilization. This mechanism produces clones, hence can be considered as a form of asexual reproduction.

Apomixis can occur in a number of ways, some of which are mentioned below:

Nucellar cells which are diploid & located outside the embryo sac continuously divide and enter inside embryo sac and later develop into embryos. In this way, multiple embryos can exist inside one ovule. This is termed as Polyembryony. It is seen commonly in Citrus, mango etc..

Sometimes, the egg cell is not formed as a result of reduction division, hence diploid. This diploid egg cell later directly develops into an embryo.

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