BRAINCAKELong Day Plants
Long day plants flower when the days are long and the nights are shorter than a critical length. In the UK they usually flower in late spring and summer. Examples include spinach, radish and red clover.
It is really the length of the night, not the day, that matters.
How phytochrome controls flowering
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Key terms in this lesson
- phytochrome
- A blue-green plant pigment existing in two interconvertible forms sensitive to red and far-red light, controlling responses such as flowering and germination.
More in Chemical Control
- Apical Dominance
- Sensory Systems in Plants
- Phytochromes
- Photoperiodism
- Short Day Plants
- Day Neutral Plants
- Signal Detection
- Discovery
All 30 lessons in Chemical Control · All Edexcel A-level Biology topics