Question :One of the major approaches of crop improvement programme is Artificial 25. Hybridisation. Explain the steps involved in making sure that only the desired pollen grain pollinate the stigma of a bisexual tlower by a plant 3 breeder.
The correct answer is -The steps involved in making sure that only the desired pollen grain pollinates the stigma of a bisexual flower by a plant breeder are as follows:
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Isolation: The first step is to isolate the bisexual flower to be pollinated from other flowers to prevent cross-pollination. This can be done by covering the flower with a paper bag before anthesis.
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Emasculation: After isolation, the breeder removes the anthers from the bisexual flower to be pollinated. This is known as emasculation and is done to prevent self-pollination and to ensure that only the desired pollen grain pollinates the flower.
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Pollination: The desired pollen grain is then collected from the male parent and applied to the stigma of the emasculated bisexual flower. The pollen can be collected by shaking the anthers over a piece of paper or by using a fine brush.
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Bagging: After pollination, the bisexual flower is covered with a new paper bag to prevent cross-pollination from other flowers.
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Labeling: The plant breeder labels the flower with information about the parents used in the cross and the date of pollination.
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Monitoring: The breeder monitors the development of the flower and records any observations of interest, such as the formation of seed pods.
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Harvesting: Once the seeds have matured, they are harvested from the plant and stored for further use in the crop improvement program.
