在葡萄藤中测量叶子和茎水潜力的最佳程序:种植物和水状况很重要
Martina Tomasella1, Alberto Calderan1,2, Alenka Mihelčič3
1Department of Life Sciences, University of Trieste, via L. Giorgieri 10, 34127 Trieste, Italy.
Plants (Basel, Switzerland)
|July 14, 2023
概括
葡萄酒水的状态监测需要特定的协议. 根据种类和季节,叶子和茎的水潜力测量有很大差异,因此需要定制的实验程序来准确确定植物的水状况.
科学领域:
- 植物生理学 植物生理学
- 农业科学 农业科学
- 环境科学环境科学
背景情况:
- 压力室对于监测工厂水的状态至关重要.
- 缺少用于确定水位的标准化协议,特别是考虑到种类和季节性变化.
研究的目的:
- 评估样品储存时间对不同葡萄品种的叶子水潜力 (Ψleaf) 和平衡时间对茎水潜力 (Ψstem) 的影响.
- 为了确定精确的水状态评估所需的种类和季节特定调整.
主要方法:
- 在中度干旱的早期 (Es) 和晚期 (Ls) 季节研究了四种葡萄藤品种.
- 确定了 Ψleaf 和 Ψstem 测量的最大样本储存时间和最小平衡时间,以 24 小时的叶子覆盖为对照.
主要成果:
- 在"Pinot gris"品种中,在储存1小时后,叶子水潜力 (Ψleaf) 迅速下降,而"Merlot"品种显示稳定性长达3小时.
- 根据品种和季节,茎水潜力 (Ψstem) 均衡时间从10分钟到超过2小时不等.
- 在 Ψleaf 和 Ψstem 测量协议中观察到显著的品种和季节性差异.
结论:
- 由于葡萄树的品种和季节性变化,用于确定水位的标准协议是不够的.
- 建议进行常规的试验前测试,以建立特定的程序,以可靠地确定植物水的状态.
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