Data underlying publication: Neglecting acclimation of photosynthesis under drought can cause significant errors in predicting leaf photosynthesis in wheat

This dataset contains leaf gas exchange and chlorophyll fluorescence data, leaf morphological data, and irrigation data collected in two experiments conducted in 2019 (EXP2019) and 2020 (EXP2020), at Wageningen University &amp; Research, Wageningen, the Netherlands. The objective of this study was to investigate the response of leaf photosynthetic parameters to growth temperature and drought stress in winter wheat. Briefly, in EXP2019, two winter wheat (<em>Triticum aestivum</em> L.) genotypes, Thésée and Récital, were subjected to well-watered and drought treatments; in EXP2020 the two water regimes combined with high (HT), medium (MT) and low (LT) growth temperatures were imposed on Thésée. For the processes of data collection: firstly, irrigation data were collected once water stress treatment was imposed. Weight of each pot was measured by weighing pots daily. Secondly, gas exchange and chlorophyll fluorescence data were collected simultaneously by using a portable photosynthetic system (Li-Cor 6800; Li-Cor Inc., Lincoln, NE, USA) equipped with an integrated fluorescence chamber head of 6 cm². Lastly, the portion of the flag leaves used for gas exchange and chlorophyll fluorescence measurements was cut to determine its area, weight (i.e., leaf morphological data), as well as leaf carbon and nitrogen concentrations.

本数据集包含2019年（EXP2019）与2020年（EXP2020）于荷兰瓦赫宁根大学及研究中心（Wageningen University & Research, Wageningen, the Netherlands）开展的两项试验中采集的叶片气体交换与叶绿素荧光数据、叶片形态学数据以及灌溉数据。
本研究旨在探究冬小麦（*Triticum aestivum* L.）叶片光合参数对生长温度与干旱胁迫的响应规律。
简要而言，在EXP2019试验中，选取两个冬小麦品种‘Thésée’与‘Récital’，分别设置充分灌水与干旱胁迫处理；在EXP2020试验中，针对品种‘Thésée’，将两种水分管理模式与高（HT）、中（MT）、低（LT）三种生长温度组合施加处理。
数据采集流程如下：其一，在施加水分胁迫处理后即启动灌溉数据采集，每日通过称量盆钵重量获取相关监测数据；其二，采用配备6平方厘米集成荧光叶室的便携式光合测定系统（Li-Cor 6800；美国内布拉斯加州林肯市Li-Cor公司）同步采集气体交换与叶绿素荧光数据；其三，剪下用于气体交换及叶绿素荧光测定的旗叶部分，测定其叶面积、叶重量（即叶片形态学数据），同时检测叶片碳、氮浓度。