Endo-, Para-, and Ecodormancy: Physiological Terminology and Classification for Dormancy Research

Endo-, Para-, and Ecodormancy: Physiological Terminology and Classification for Dormancy Research

Vol. 22(3), June 1987 | Gregory A. Lang, Jack D. Early and George C. Martin, Rebecca L. Darnell
The paper discusses the need for a standardized and unified terminology to describe plant dormancy, which is a critical aspect of plant cultivation affecting seed germination, flowering, and vegetative growth. The authors highlight the complexity and diversity of dormancy mechanisms, noting that existing terminology is often imprecise, ambiguous, and lacks a clear framework. They propose a new classification system based on the terms endodormancy, paradormancy, and ecodormancy, which are derived from Greek prefixes to indicate the physiological processes involved. Endodormancy refers to internal signals within the structure causing growth control, paradormancy involves external signals from other structures, and ecodormancy is due to unsuitable environmental conditions. The authors argue that this new system provides a more descriptive and physiological basis for understanding dormancy, facilitating better communication and research in the field. They also discuss the challenges and future directions for expanding this terminology to accommodate new findings and further research.The paper discusses the need for a standardized and unified terminology to describe plant dormancy, which is a critical aspect of plant cultivation affecting seed germination, flowering, and vegetative growth. The authors highlight the complexity and diversity of dormancy mechanisms, noting that existing terminology is often imprecise, ambiguous, and lacks a clear framework. They propose a new classification system based on the terms endodormancy, paradormancy, and ecodormancy, which are derived from Greek prefixes to indicate the physiological processes involved. Endodormancy refers to internal signals within the structure causing growth control, paradormancy involves external signals from other structures, and ecodormancy is due to unsuitable environmental conditions. The authors argue that this new system provides a more descriptive and physiological basis for understanding dormancy, facilitating better communication and research in the field. They also discuss the challenges and future directions for expanding this terminology to accommodate new findings and further research.
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