The chemical that is most important in telling a plant when to flower is phytochrome.
Which chemical is most important in telling a plant when to flower?
- Phytochrome is a blue-green pigment found in many plants, which regulates various developmental processes.
- Phytochrome is widely distributed in the plant kingdom.
- Although green leaves are the organs, which perceive daylight most effectively, their phytochrome content is very low.
- For this reason, most studies with phytochrome have used etiolated seedlings from which phytochrome has been obtained in highly purified form.
- The light receptors of plants are Phytochrome Red and Phytochrome Far Red. They are both color pigments found in leaves.
- They are chemically reactive and absorb red light at specific wavelengths. This chemical reaction tells the plant whether to continue vegetating or flowering.
Hence, the phytochrome chemical is most important in telling a plant when to flower.
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