Rice seed dormancy can be successfully broken via thermal treatment at________________?
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Answer: A. 50°c for 3-7 days
Explanation
Dormancy in freshly harvested rice seeds can be broken via thermal treatment. Applying controlled heat at fifty degrees Celsius for several days removes dormancy. This thermal shock stimulates enzymatic activity required for successful seed germination. Seed dormancy prevents immediate sprouting on the mother plant during humid weather. Freshly harvested cereal grains often require a ripening period before natural germination. Artificial drying and heating accelerate physiological after-ripening processes reliably.
Seed processing facilities use specialized heating chambers to test dormant grain lots. Farmers planting immediately after harvest must break dormancy to secure uniform stands. Proper temperature control prevents heat damage to delicate embryonic seed tissues. Alternative temperature durations fail to provide the optimal thermal after-ripening stimulus. Slower heat treatments often leave significant percentages of seeds in prolonged dormancy. None of the above is incorrect because the fifty degree Celsius treatment is accurate.
- Subject
- Agriculture
- Category
- Agriculture
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- —
- Difficulty
- medium
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