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प्रश्न
State what is apomixis. Comment on its significance. How can it be commercially used?
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उत्तर
Apomixis is the mode of reproduction which does not involve formation of zygote through gametic fusion.
Significance of apomixis:
(i) Adventives embryos are better clones than cuttings.
(ii) Embryos formed through apomixes are generally free from infections.
Hybrid varieties provide higher and better yield. If hybrid seeds are produced ever year, they do not maintain hybrid characters because of segregation of traits. Moreover, production of hybrid seeds every year is very costly. This can be avoided by introducing apomixes in hybrid seeds.
संबंधित प्रश्न
Explain any three advantages that seeds offer to angiosperms.
Define Apomixis.
How polyembryony can be commercially exploited?
The ______ collect the pollen grains.
Fill in the blank:
The ________contains the egg or ovum.
Fill in the blank:
The ______ is the base of the flower to which other floral parts are attached.
Once the pollen reaches the stigma, the pollen tube traverses down the ________ to the ovary where fertilization occurs.
Give an account of polyembryony.
In case of polyembryony, if an embryo develops from the synergid and another from the nucellus which is haploid and which is diploid?
Explain following term:
Polyembryony
