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प्रश्न
Answer the following question.
Pollen banks are playing a very important role in promoting plant breeding programs the world over. How are pollens preserved in the pollen banks? Explain. How are such banks benefitting our farmers? Write any two ways.
उत्तर
Pollen banks are used to store pollens for a very long period of time in viable conditions. Pollens are preserved in a bank using cryopreservation i.e., they are stored in a viable condition in low-temperature conditions (-196 degree Celsius) using liquid nitrogen.
The important applications of pollen banks for our farmers are the following:
- To preserve the agricultural biodiversity in the form of preservation of valuable genetic resources.
- These pollens can be used in various crop hybridization breeding programs, biochemical and physiochemical studies such as the study of allergens, etc.
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संबंधित प्रश्न
Name the organic material exine of the pollen grain is made up of. How is this material advantageous to pollen grain?
A moss plant is unable to complete its life cycle in a dry environment. State two reasons.
Explain the role of tapetum in the formation pollen-grain wall.
Draw a labelled diagram of the T.S. of a mature anther.
Pollen grain is liberated at ______.
Pollen grains can be stored in liquid nitrogen at ______.
Spiny or sticky pollen grains and large, attractively coloured flowers are associated with ______.
Callase enzyme which dissolves callose of pollen tetrads to separate four pollens is provided by ______.
Several pollen grains form a unit designated as pollinium in Family ______.
Sepals and petals or perianth are inconspicuous in entomophilous flowers.
