葡萄树叶水潜力可以根据生理和气象变量建模吗? 一种机器学习方法
Miguel Damásio1, Miguel Barbosa2, João Deus1
1INIAV I.P., Instituto Nacional de Investigação Agrária e Veterinária, Polo de Inovação de Dois Portos, Quinta da Almoinha, 2565-191 Dois Portos, Portugal.
Plants (Basel, Switzerland)
|December 23, 2023
概括
准确的植物水状态监测对于面临气候变化的葡萄树至关重要. 胃导电率 (gs) 有效预测了黎明前的水潜力 (Ψpd),从而实现了精确的灌策略.
科学领域:
- 葡萄种植和气候科学 葡萄种植和气候科学
- 植物生理学和水关系.
背景情况:
- 全球气候变化加剧了热浪和干旱,影响了全世界的葡萄种植.
- 精确的灌,以可靠的水状况指标 (WSIs) 为指导,对于地中海葡萄种植至关重要.
- 传统的叶子水潜力 (Ψleaf) 测量是侵入性的,耗时的.
研究的目的:
- 为了确定与葡萄酒水状况相关的关键变量.
- 为了确定哪些变量最好地预测叶子水潜力 (Ψleaf).
- 开发准确的,非侵入性的方法来监测植物水的状态.
主要方法:
- 实地研究在葡萄酒的五个品种在阿伦特乔,葡萄牙,在完全灌 (FI),缺口灌 (DI),和没有灌 (NI) 处理.
- 监测包括口腔导电量 (gs),早晨 (Ψpd) 和茎水潜力 (Ψstem),以及热成像.
- 机器学习回归模型 (ExtraTrees,梯度提升) 在气象,热和气体数据上进行训练,以预测 Ψpd.
主要成果:
- 胃导电量 (gs) 和前水电位 (Ψpd) 显示对灌处理的反应不同.
- 中午和中午的茎水潜力 (Ψstem) 不能区分治疗.
- gs表现出与其他WSIs最强的相关性,以及 Ψpd 的最佳预测能力.
- 集成机器学习模型在预测 Ψpd (R2 > 0.83) 中取得了很高的准确性.
结论:
- 胃管导电率 (gs) 是葡萄藤早晨前水潜力 (Ψpd) 的高效预测指标.
- 使用气象,热和气体数据的机器学习模型提供了强大的,非侵入性的方法来监测植物水的状态.
- 这些发现支持在不断变化的气候条件下在葡萄栽培中实施精确灌策略.
相关概念视频
Adaptations that Reduce Water Loss
25.6K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.6K
Light Acquisition
8.5K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
8.5K
Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K
Precipitation Processes
456
The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
456
Precipitation Gravimetry
6.6K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
6.6K
Xylem and Transpiration-driven Transport of Resources
23.9K
The xylem of vascular plants distributes water and dissolved minerals that are taken up by the roots to the rest of the plant. The cells that transport xylem sap are dead upon maturity, and the movement of xylem sap is a passive process.
23.9K


