It is of two types:
(i) Vegetative Reproduction: It is a type of asexual reproduction, mostly in plants when a plant part is detached and produces new progeny.Apomixis: Vegetative Propagation
(ii) Agamospermy: Process which involves sex cells but takes place without fertilisation or meiosis.
(a)
(b) Adventitive Embryony: The nucellar or integumentary cells produce a diploid embryo.
(c) Apospory: Cell, outside the embryo sac produces aposporic embryo sac.
It is the process of producing fruits without fertilisation.
On the basis of its causes, it is of three types:
(i) Genetic Parthenocarpy: Parthenocarpic fruits are produced because of hybridisation or mutation.
(ii) Environmental Parthenocarpy: The environmental condition like fog, frost, high temperature and freezing led to the non-functioning of the reproductive organ and results in parthenocarpy.
(iii) Chemical Induced Parthenocarpy: The artificial application of IAA, α-NAA, gibberellin leads to the production of parthenocarpic fruits.
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1. What is apomixis? |
2. How does apomixis differ from parthenocarpy? |
3. What are the advantages of apomixis in plants? |
4. Can apomixis occur naturally in all plant species? |
5. Are there any disadvantages to apomixis in plants? |
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