Winegrape cold hardiness in Okanagan Valley vineyards between 2012 and 2019

Understanding how plants' physiological tolerances vary between genotypes is important for understanding current habitat suitability and potential range shifts with climate change. In this dataset we focus on cold hardiness of different genotypes of Vitis vinifera subsp. vinifera plants in the Okanagan Valley, BC, Canada. We collected data from 18 different genotypes representing 90% of the study region's harvest. Samples came from 13 different vineyard sites in the Okanagan Valley, wich is located at the northern range edge for the species (latitudes 40.0 to 50.5). Buds from 3 to 6 vines were collected biweekly from late October to early April every year between 2012 and 2019. We measured buds from nodes 3 through 7. We then took a mean of all the buds of all the vines for a given site and genotype. We used differential thermal analysis (DTA) to estimate the cold hardiness of each bud. This method detects heat spikes released when internal cellular water freezes, which is the point where the bud dies. The final bud cold hardiness values used in our model are the mean of 15 buds per genotype and location, and are expressed as the Low Temperature Exotherms where there was 50% bud mortality (LTE50), the standard method for estimating critical lethal temperatures for winegrape field damage. We include the mean of the minimum and maximum daily temperature at the Penticton weather station on the day the material was collected. original weather data can also be downloaded directly from https://climate.weather.gc.ca/historical_data/search_historic_data_e.html?Month=10&Day=11&Year=2023&timeframe=2&StartYear=1840&EndYear=2023. We first used this data in the manuscript in The role of genotypic and climatic variation at the range edge: A case study in winegrapes by Faith A M Jones, Carl Bogdanoff and E M Wolkovich, accepted in the American Journal of Botany in October 202

探明不同基因型植物的生理耐受性差异，对于理解当前生境适宜性以及气候变化下物种潜在分布范围变化具有重要意义。本数据集聚焦加拿大不列颠哥伦比亚省奥卡诺根谷（Okanagan Valley, BC）内不同基因型欧洲葡萄（*Vitis vinifera* subsp. *vinifera*）的抗寒性。本次研究采集了覆盖该研究区域90%收获量的18个不同基因型样本，其采集自奥卡诺根谷的13个不同葡萄园地块——该区域处于该物种分布范围的北界（纬度40.0°至50.5°）。2012年至2019年间，每年从10月末至次年4月初，每两周采集3至6株葡萄藤的芽体样本，针对第3至第7节位的芽体进行检测。随后针对特定地块与基因型的所有葡萄藤芽体样本计算平均值。我们采用差热分析（Differential Thermal Analysis, DTA）来评估每枚芽体的抗寒性：该方法通过检测细胞内水分结冰时释放的放热峰，确定芽体的致死温度点。本模型所采用的最终芽体抗寒性数值，为每个基因型与地块对应的15枚芽体的平均值，以“50%芽体死亡率对应的低温放热峰（Low Temperature Exotherms, LTE50）”表示——这是评估酿酒葡萄田间损伤临界致死温度的标准方法。我们同时纳入了样本采集当日彭蒂克顿气象站记录的日最高温与日最低温的平均值。原始气象数据可直接从以下链接下载：https://climate.weather.gc.ca/historical_data/search_historic_data_e.html?Month=10&Day=11&Year=2023&timeframe=2&StartYear=1840&EndYear=2023。本数据集首次应用于Faith A M Jones、Carl Bogdanoff与E M Wolkovich合著的论文《分布北界的基因型与气候变异作用：以酿酒葡萄为例》（The role of genotypic and climatic variation at the range edge: A case study in winegrapes），该论文于202年10月被《美国植物学杂志》（American Journal of Botany）接收。