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Questions and Answers
ROS are not generated in seeds during imbibition
False
Long-term seed storage does not lead to decreased viability due to ROS accumulation
False
Studies on afterripening molecular biology include protein profiling
False
Afterripening of Arabidopsis thaliana seeds showed no differences in gene expression profiles between dormant and afterripened seeds
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The GA-insensitive sleepy 1-2 mutant in A. thaliana reduces dormancy-promoting transcripts during afterripening, breaking dormancy
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Primary seed dormancy and its regulation during afterripening are well understood
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Seeds always afterripen in dry storage, with high germination rates after storage for several months
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Afterripening varies among populations and species, impacting germination rates and viability
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Seeds stored in conditions suitable for afterripening may not exhibit symptoms of aging and eventually die
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Extended periods of dry storage at low temperatures can decrease dormancy in some species
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Study Notes
Problems and Considerations in Seed Afterripening
- ROS are generated in seeds during imbibition and play a role in germination control
- Long-term seed storage can lead to decreased viability due to ROS accumulation and reduced antioxidant potential
- Studies on afterripening molecular biology include gene transcription, genome expression, mRNA profiling, and proteomic analysis
- Afterripening of Arabidopsis thaliana seeds showed differences in gene expression profiles between dormant and afterripened seeds
- The GA-insensitive sleepy 1-2 mutant in A. thaliana reduces dormancy-promoting transcripts during afterripening, breaking dormancy
- Primary seed dormancy and its regulation during afterripening are poorly understood
- Seeds may not afterripen in dry storage, with low germination rates after storage for several months
- Afterripening varies among populations and species, impacting germination rates and viability
- Seeds stored in conditions suitable for afterripening may exhibit symptoms of aging and eventually die
- Extended periods of dry storage at low temperatures can increase dormancy in some species
- Seeds kept in suitable conditions for afterripening for an extended period may enter secondary dormancy
- Induction of secondary dormancy in seeds may occur after certain storage conditions, impacting germination rates
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Description
Test your knowledge on the problems and considerations in seed afterripening with this informative quiz. Explore topics such as ROS accumulation, gene expression, dormancy regulation, and the impact of storage conditions on seed viability and germination rates.
