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Notes

Notes. Flowering at same time for cross pollination. Long day plants (flower when night is short) Short day plants (flower when might is long) Day Neutral plants have no light trigger. If they reduced the timing by 1 hour they got flowering.

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Notes

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  1. Notes • Flowering at same time for cross pollination. • Long day plants (flower when night is short) • Short day plants (flower when might is long) • Day Neutral plants have no light trigger.

  2. If they reduced the timing by 1 hour they got flowering. • Can you tell from this if it’s the light or dark controlling the flowering? • No, not really

  3. Notes • The flowering in plants is dependant on the length of the dark exposure. • The timing mechanism is phytochrome pigment – 2 types. Pfr (far red) Pr (red)

  4. Notes • Sunlight = more red light. • = more Pfr produced. • Darkness = Pfr slowly changes to Pr • = Some Pr remains.

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