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8 Cards in this Set
- Front
- Back
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Biennial
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plants that have a 2 year life cycle:
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1st year
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grow vegetatively as rosettes or bulbs in late summer-fall
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winter
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are vernalized by cold of winter to trigger flower inception
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2nd year
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in spring flower forms and develops, called bolting
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Vernalization
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a cold treatment (32-45 oF for 4-12 weeks) required to trigger or initiate
flower formation in biennials. |
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Bolting
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flower formation and seed stalk elongation in biennials
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De-Vernalization
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exposure (1 day to 1 week) to high temperatures (90-95 oF) immediately after vernalization, which erases the vernalization treatment.
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Site of Perception
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growing point (apex) of stem
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