Plants measure photoperiod as a predictable signal for seasonal change. Recently, new connections between photoperiod measuring systems and metabolism in plants have been revealed. These studies explore historical observations of metabolism and photoperiod with modern tools and approaches, suggesting there is much more to learn about photoperiodism in plants.

中文翻译：

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能量作为生长和繁殖的季节性信号。

植物测量光周期作为季节变化的可预测信号。最近，已经揭示了光周期测量系统和植物新陈代谢之间的新联系。这些研究利用现代工具和方法探索了对新陈代谢和光周期的历史观察，表明还有更多关于植物光周期的知识。