Timing of senescence: The opening act
Summary :
Table of Contents
- Introduction.
- Genotypes.
- Carbohydrates.
- Significant changes in carbohydrate levels.
- Recent work in arabidopsis thaliana.
- Circadian rhythms.
- Interorgan communication.
- Timing of senescence of petals and corollas.
- Styles in triggering age-related flower senescence.
- Abiotic stresses.
- Pollination.
- Hormones.
- Conclusion.
Abstract
Flower senescence in this context will happen when it becomes more advantageous for the plant to construct a new flower - including renewed odds of getting pollinated - than to maintain an existing one. Flower senescence can therefore be defined as the events that lead to the death of flower parts signaling the end of an open and functional disseminator and/or receptor of pollen. It should be noted here that the most visible and largest flower part to senesce is the corolla or petals and that this organ will receive most attention in this chapter. However, other flower parts such as styles, anthers, and in the case of unpollinated flowers, ovaries, sepals and pedicels, will also in time senesce.
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Presentation | 11/17/2008 | en | .doc | 5 pages
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