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While planning for an articifical hybrid...

While planning for an articifical hybridisation programmme involving dioecious plants, which of the following steps would not be relevent?

A

Bagging of female flower

B

Dusting of pollen on stigma

C

Emasculation

D

Collection of pollen

Text Solution

Verified by Experts

The correct Answer is:
C

If the female parent produces unisexual flowers, there is no need for emasculation. The female flower buds are bagged before the flowers open.
When the stigma becomes receptive, pollination is carried out using the desired pollen and the flower rebagged. This protects them from contamination by unwanted pollen grains.
Note If the female parent bears bisexual flowers, removal of anthers from the flower boud before the anther dehisces is necessary. This is called emasculation.
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NCERT EXEMPLAR-SEXUAL REPRODUCTION IN FIOWERING PIANTS-Sexual Reproduction In Fiowering Piants
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  2. In an embryo sac, the cells that degenerate after fertilisation are

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  4. In the embryos of a typical dicot and a grass, true homologous structu...

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  5. The phenomenon observed in some plants wherein parts of the sexual ap...

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  6. In a flower, if the megaspore mother cell forms magaspores without und...

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  7. The phenomenon wherein, the ovary develops into a fruit without fertil...

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  8. Name the component cells of the 'egg-apparatus' in an embryo sac.

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  9. Name the part of gynoecium that determines the compatible nature of po...

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  10. Name the common function that cotyledons and nucellus perform.

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  11. Complete the following flow chart

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  12. Indicate the stages where meiosis and mitosis occur (1, 2 or 3 ) in th...

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  13. In the diagram given below, show the path of a pollen tube from the pl...

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  14. Name the parts of pistil which develop into fruit and seeds.

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  15. In a case of polyembryony if an embryo develops from the synergid and ...

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  16. Can an unfertilised, apomictic embryo sac give rise to diploid embryo ...

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  17. The three cells found in a pollen grain when it is shed at 3-celled st...

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  18. What is self-incompatibility ?

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  20. Draw the diagram of a mature embryo sac and show its eight -uncleate, ...

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