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Question
One of the major approaches of crop improvement programme is Artificial Hybridisation. Explain the steps involved in making sure that only the desired pollen grain pollinate the stigma of a bisexual flower by a plant breeder.
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Solution
When the desired polin greis are used for pollination and fertilisation to get desired progeny, is called artificial hybridization.
Steps of artificial hybridization:
Emasculation: In this step, the anthers (male part) are removed from a bisexual flower to avoid unwanted fertilisation from the anthers of the same flower. Unisexual flowers do not require this step.
Bagging: In this, the flowers are covered with a bag to avoid landing of unwanted pollen grains on the stigma. The bagging is done till the flower attains receptivity.
Pollination: Pollens with desired traits are dusted onto the flower after the flower is ready to receive the pollens.
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RELATED QUESTIONS
Answer the following question.
You are conducting artificial hybridization on papaya and potato. Which one of them would require the step of emasculation and why? However, for both, you will use the process of bagging. Justify giving one reason.
While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant?
At what stage of flower development must emasculation be performed?
When should the bag be applied during the artificial hybridization process?
Is emasculation required for unisexual flowers?
What are the examples of plants with unisexual flowers that do not require emasculation?
Which flowers require emasculation during artificial hybridization?
What must happen after the desired pollen is applied to the stigma during artificial hybridization?
What material is used for bagging the emasculated flowers in artificial hybridization?
What stage of the female flower bud is optimal for performing emasculation?
