BACKGROUND:The predicted and ongoing climate warming can have far-reaching effects on plant growth and life cycle. Therefore, there is need for simple and convenient methods for analysis and monitoring of consequences of the ongoing warming. OBJECTIVE:To demonstrate the usefulness of so-called climate-photothermographs for studying the consequences of the ongoing warming for production of berry crops. METHODS:Local photothermal climates can be expressed by so-called climate-photothermographs, which show the relationship between temperature and daylength for each month of the year in a rectangular coordinate diagram. When superimposing critical response curves for plant development processes on top of such a diagram, the limitations of the given climate for fulfilment of the processes can be readily assessed. RESULTS:Consequences of 2°C warming for critical development processes such as transition to flowering and breaking of winter dormancy in the berry crops raspberry, black currant and strawberry were clearly exposed by the technique. The locations Geisenheim, Germany and Ås, Norway were used as examples. Inadequate winter chill was identified as the most limiting factor for these crops. CONCLUSIONS:We conclude that the technique is an efficient and convenient tool for monitoring the consequences of climate warming for berry crops.

中文翻译：

---

气候光热成像仪，用于对作物气候变暖的影响进行生态生理评估的工具：三种浆果作物的实例

背景：预计的和持续的气候变暖可能对植物的生长和生命周期产生深远的影响。因此，需要一种简单方便的方法来分析和监测持续变暖的后果。目的：证明所谓的气候热成像仪在研究持续升温对浆果作物生产的影响方面的作用。方法：当地的光热气候可以通过所谓的气候光热成像仪来表示，它以直角坐标图显示一年中每个月的温度与日长之间的关系。当在该图的顶部叠加用于植物发育过程的关键响应曲线时，可以很容易地评估实现过程所给定气候的局限性。结果：该技术清楚地暴露了2°C升温对关键发展过程的影响，例如转变为开花的果实以及浆果，覆盆子，黑加仑和草莓的冬季休眠。以德国盖森海姆和挪威Ås的位置为例。冬季寒冷不足是这些作物的最大限制因素。结论：我们得出结论，该技术是监测浆果作物气候变暖后果的一种高效便捷的工具。冬季寒冷不足是这些作物的最大限制因素。结论：我们得出结论，该技术是监测浆果作物气候变暖后果的一种高效便捷的工具。冬季寒冷不足是这些作物的最大限制因素。结论：我们得出结论，该技术是监测浆果作物气候变暖后果的一种高效便捷的工具。