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16 Cards in this Set
- Front
- Back
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Photoperiod |
duration and timing of day and night |
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Long day vs. Short Day vs. Day-neutral |
long day plants must be exposed to period longer than critical length for flowering, flower spring and summer Short day exposed to light periods shorter than critical, usually summer or autumn Day-neutral without regard of daylenght |
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Florigen |
the leaf-derived signal that promotes flowering |
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Circadian rhythm |
regular rhythms of growth and activity that occur in approximately 24hr cycle |
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CONSTANS (CO) |
gene encode TF activates downstream targets that termed FLORAL PATHWAY INTEGRATORS (FPI) promote flowering |
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Vernalization |
induction of flowering by cold treatment |
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FLOWERING LOCUS (FLC) |
member of family TF called MAD-box genes. sensitive to cold treatment. vernalization sensitive ecotypes, non-vernalized plants show high FLC while FLC expression declines after vernilization |
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Floral pathway integrators |
genes promote flowering |
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LEAFY (LFY) |
gene LEAFY major player for floral meristem identity |
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Inflorescence |
flower cluster with definite arragnement flowers |
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Cyme/cymose |
flat topped on round-topped determinate inflorescence with paniculate in which the terminal flower blooms first. with flowers in cyme |
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Raceme/racemose |
an unbranched elongated inflorescence with pedicellate flowers maturing from bottom upwards |
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Bract |
reduced leaf or leaf-like structure at base of flower of inflorescence |
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Pedicel |
stalk of single flower in an inflorescence |
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Peduncle |
stalk of solitary flower or of an inflorescence |
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Phyllotaxy |
arrangement of leaves on stem |
