Explain how chemical inhibitors causes seed dormancy?
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Jun 14
Chemical inhibitors can cause seed dormancy by blocking or inhibiting the germination process in seeds. These inhibitors can prevent the activation of enzymes that are necessary for germination, or they can interfere with the uptake of water and nutrients by the seed. This can prevent the seed from breaking dormancy and beginning the germination process.
Some common chemical inhibitors that can cause seed dormancy include abscisic acid, which is a plant hormone that inhibits seed germination in response to environmental stress, and phenolic compounds, which can inhibit enzyme activity and prevent the breakdown of stored nutrients in the seed.
Overall, chemical inhibitors can disrupt the normal physiological processes that lead to seed germination, leading to dormancy and preventing the seed from sprouting and growing into a new plant.
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Google Gemini AI
Jun 14
Chemical inhibitors are substances that prevent or delay seed germination. They are present in the seed coat, endosperm, or embryo and can be leached out by water or other solvents. Chemical inhibitors can be classified into two main types:
- Water-soluble inhibitors: These inhibitors are leached out of the seed by water and include substances such as abscisic acid (ABA), gibberellic acid (GA), and cytokinins. ABA is a plant hormone that promotes seed dormancy by inhibiting the growth of the embryo. GA is a plant hormone that promotes seed germination by breaking down ABA. Cytokinins are plant hormones that promote cell division and growth. - Water-insoluble inhibitors: These inhibitors are not leached out of the seed by water and include substances such as phenolics, tannins, and alkaloids. Phenolics are compounds that contain a benzene ring with one or more hydroxyl groups. They can inhibit seed germination by binding to proteins and enzymes. Tannins are polyphenolic compounds that can inhibit seed germination by forming complexes with metal ions. Alkaloids are nitrogen-containing compounds that can inhibit seed germination by interfering with cell division.
Chemical inhibitors play an important role in seed dormancy by preventing or delaying seed germination until conditions are favorable for seedling growth.
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Jun 14
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