Plants Exhibiting Photoperiodic Control of Flowering

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Does the Maize ID1 Control Production of the
Florigen?

• mutants delayed in flowering
• flowers are aberrant
• mRNA expressed in young leaves, not SAM
• ID1 protein may be a transcription factor

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Flowering in Response to Daylength
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Day Length Throughout North America
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Plants Exhibiting Photoperiodic Control of
Flowering
Short-day Obligate (absolute) Chrysanthemum
Coffee Poinsettia Strawberry Tobacc
o Facultative (quantitative) Hemp Cotton
Rice Long-day Obligate Carnation Henban
e Oat Clover Facultative Arabidopsis
Pea Barley Lettuce Day-neutral T
omato Cucumber Potato Bean
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Dark Period Light Pulse in SD and LD Plant
Flowering
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Daylength Effects on Flowering
Short day
Long Day
Chrysanthemum
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Length of Darkness is Measured
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Effect of Light Interruption During Darkness on
Flowering
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Length of Night Influences Flowering
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Phytochrome is Involved in Photoperiodism
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Genes Affecting Flowering Time in Pea
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Genetics of Floral Induction in Arabidopsis
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Embryonic flower1
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Genetics of Floral Induction in Arabidopsis
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Arabidopsis cal-1 ap1
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terminal flower1
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Transgenic Plants Expressing 35SLFY
Control
35SLFY
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Terminal Flower in 35SLFY Transgenics