non-recurrent type as mentioned earlier it refers, Biology

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non-recurrent type as mentioned earlier it refers

Non-recurrent Type

As mentioned earlier it refers to embryo development in reduced embryo sacs. The mechanisms identified for such cases are:

Reduced Pseudogamy: The reduced egg develops in a pseudogamous, and parthenogenic manner. The pollen tube enters normally but the male gamete fails to fuse with the egg and disintegrates in the cytoplasm of egg.
Reduced Parthenogenesis: Embryo development is accomplished by heat or cold treatment.
Androgenesis: The egg nucleus degenerates, the sperm nucleus functions in the cytoplasm of the egg and produces the embryo.

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Biology: non-recurrent type as mentioned earlier it refers

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