Bud dormancy of plants has traditionally been explained either by physiological growth arresting conditions in the bud or by unfavourable environmental conditions, such as non-growth-promoting low air temperatures. This conceptual dichotomy has provided the framework also for developing process-based plant phenology models. Here, we propose a novel model that in addition to covering the classical dichotomy as a special case also allows the quantification of an interaction of physiological and environmental factors. According to this plant-environment interaction suggested conceptually decades ago, rather than being unambiguous, the concept of "non-growth-promoting low air temperature" depends on the dormancy status of the plant. We parameterized the model with experimental results of growth onset for seven boreal plant species and found that based on the strength of the interaction, the species can be classified into three dormancy types, only one of which represents the traditional dichotomy. We also tested the model with four species in an independent experiment. Our study suggests that interaction of environmental and physiological factors may be involved in many such phenomena that have until now been considered simply as plant traits without any considerations of effects of the environmental factors.

中文翻译：

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超越休息和静止状态（内生休眠和生态休眠）：一种用于量化休眠休眠释放中植物与环境相互作用的新颖模型。

传统上，通过芽中的生理生长阻止条件或不利的环境条件（例如不促进生长的低气温）来解释植物的芽休眠。这种概念上的二分法还为开发基于过程的植物物候模型提供了框架。在这里，我们提出了一种新颖的模型，该模型除了涵盖作为特殊情况的经典二分法外，还可以量化生理和环境因素之间的相互作用。根据数十年前从概念上提出的这种植物与环境的相互作用，而不是明确的，“非促进生长的低空气温度”的概念取决于植物的休眠状态。我们用七个北方植物物种的生长开始实验结果对模型进行了参数化，发现基于相互作用的强度，该物种可分为三种休眠类型，其中只有一种代表传统的二分法。我们还通过独立实验对四种物种的模型进行了测试。我们的研究表明，环境和生理因素的相互作用可能涉及许多这样的现象，直到现在，这些现象都被简单地视为植物性状，而没有考虑环境因素的影响。