Podcast
Questions and Answers
What is the purpose of pre-fertilization barriers?
What is the purpose of pre-fertilization barriers?
- To prevent seed development
- To promote pollen growth
- To promote seed germination
- To prevent F1 zygote formation (correct)
What is the purpose of post-fertilization barriers?
What is the purpose of post-fertilization barriers?
- To promote pollen growth
- To promote seed germination
- To prevent F1 zygote formation
- To prevent seed development (correct)
Which technique can promote the development of an immature or weak embryo into a viable plant?
Which technique can promote the development of an immature or weak embryo into a viable plant?
- Pioneer pollen
- Cut style
- Embryo rescue (correct)
- Stylar graft
What is the purpose of Pistil manipulation?
What is the purpose of Pistil manipulation?
What does Cut style involve?
What does Cut style involve?
What does Stylar graft involve?
What does Stylar graft involve?
What does Mentor pollen involve?
What does Mentor pollen involve?
What is Pioneer pollen?
What is Pioneer pollen?
Which environmental condition can overcome incompatibility in self-incompatibility systems?
Which environmental condition can overcome incompatibility in self-incompatibility systems?
Which technique can result in seed set by pollinating unopened buds or old flowers?
Which technique can result in seed set by pollinating unopened buds or old flowers?
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Study Notes
- Pre-fertilization barriers prevent F1 zygote formation.
- Post-fertilization barriers prevent seed development.
- Techniques like Pistil manipulation, Cut style, Stylar graft, Chemical treatment, Mentor pollen, Pioneer pollen, and Environmental conditions can overcome pre-fertilization barriers.
- Embryo rescue can promote the development of an immature or weak embryo into a viable plant.
- In Pistil manipulation, pollinating unopened buds or old flowers can result in seed set.
- Cut style involves removing the stigma and part or whole of the style and pollinating the cut end.
- Stylar graft involves depositing pollen grains on a compatible stigma and grafting the style of the pollen donor onto the ovary of another plant.
- Mentor pollen involves mixing incompatible pollen with a compatible source to allow the growth of pollen tubes.
- Pioneer pollen is a variation of mentor pollen where compatible pollen is applied first followed by incompatible pollen.
- High temperatures can overcome incompatibility in self-incompatibility systems.
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