determinate inflorescence
Quick Summary
A determinate inflorescence, also known as a cymose inflorescence, is a cluster of flowers on a plant where the growth of the main axis is arrested by the development of a terminal flower bud. In this type of inflorescence, the youngest flowers are located at the bottom of an elongated axis or on the outside of a truncated axis.
Key characteristics include:
* Terminal Flower: The apical meristem produces a flower, stopping the axis's growth.
* Order of Blooming: Flowers open from the center outwards or from the bottom upwards.
* Examples: Cymes, where the central flowers open first, and dichasiums, a unit of a cyme with a central flower and two lateral ones, are types of determinate inflorescences.12
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inflorescenceDeterminate inflorescence.In determinate (cymose) inflorescences, the youngest flowers are at the bottom of an elongated axis or on the outside of a truncated axis. At the time of flowering, the apical meristem (the terminal point of cell division) produces a flower bud, thus arresting…
Read MoreIn determinate (cymose) inflorescences, the youngest flowers are at the bottom of an elongated axis or on the outside of a truncated axis. At the time of flowering, the apical meristem (the terminal point of cell division) produces a flower bud, thus arresting…
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AsteraceaeFlowers…(capitulescences) of Asteraceae is typically cymose (determinate). The terminal head on the main axis blooms first, followed by the terminal heads of the main branches. After that the sequence is mixed, with both cymose and racemose components. Only rarely, and then clearly as a derived condition, is the secondary inflorescence…
Read More…(capitulescences) of Asteraceae is typically cymose (determinate). The terminal head on the main axis blooms first, followed by the terminal heads of the main branches. After that the sequence is mixed, with both cymose and racemose components. Only rarely, and then clearly as a derived condition, is the secondary inflorescence…
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angiospermInflorescencesIn the determinate (cymose) inflorescences, the youngest flowers (those that are the last to open) are at the bottom of an elongated axis or on the outside of a truncated axis (e.g., in the cymose umbel of onions, Allium; Alliaceae). These inflorescences are determinate because, at the…
Read MoreIn the determinate (cymose) inflorescences, the youngest flowers (those that are the last to open) are at the bottom of an elongated axis or on the outside of a truncated axis (e.g., in the cymose umbel of onions, Allium; Alliaceae). These inflorescences are determinate because, at the…
Read More