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प्रश्न
What is polyembryony and how can it be commercially exploited?
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उत्तर
The occurrence of more than one embryo in a seed is called polyembryony.
- Embryos developed through polyembryony are found virus-free.
- The seedlings formed from nuclear tissue in citrus are found on better clones for orchards.
- Because nucellar adventive polyembryony produces genetically homogenous parental type seedlings, it is very important in horticulture.
- Plantlets derived from these embryos are free of illness. These embryos can be separated and cultured to make clones.
APPEARS IN
संबंधित प्रश्न
State what is apomixis. Comment on its significance. How can it be commercially used?
Explain any three advantages that seeds offer to angiosperms.
Why are some seeds referred to as apomictic seeds?
Define Apomixis.
Fill in the blank:
The ________contains the egg or ovum.
Fill in the blank:
________takes place when one male gamete and the egg fuse together. The fertilized egg grows into a seed from which the new plants can grow.
What is adventive polyembryony?
Give an account of polyembryony.
The polyembryony commonly occurs in ______.
The occurrence of two or more embryos in one ovule is called ______
The plant part which consists of two generations, one within the other-
- Pollen grains inside the anther.
- Germinated pollen grain with two male gametes.
- Seed inside the fruit.
- Embryo sac inside the ovule
Choose the correct option.
Which plants exhibit adventive (nucellar) polyembryony?
Who proposed the Necrohormone (Neochromosome) Theory and in what year?
Which of the following is an example of sporophytic cell activation polyembryony?
Which type of polyembryony involves derivatives of two or more megaspore mother cells (MMCs)?
Based on the discovery information provided, in which year was polyembryony first observed in Citrus?
Which mechanism involves the splitting or division of the zygote or proembryo into multiple parts?
