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结合耐寒性和抗脱适应性,表明葡萄树对冷却积累的反应得到了保留
Jason P Londo1, Al P Kovaleski2
1School of Integrative Plant Science, Horticulture Section, Cornell University, Geneva, NY, USA.
Journal of experimental botany
|February 8, 2025
概括
葡萄酒品种表现出不同的耐寒性和休眠性反应. 气候变化影响了这些特征,影响了芽时间,并要求重新评估葡萄种植的冷却要求.
科学领域:
- 植物生理学 植物生理学
- 适应气候变化 适应气候变化
- 葡萄种植 葡萄种植 葡萄种植
背景情况:
- 像葡萄藤这样的木质多年生植物依赖于环境线索,以求冬季的生存和及时的春季芽.
- 气候变化破坏了这些线索,导致了不可预测的休眠和芽模式.
- 了解葡萄树的耐寒性和休眠性对于适应不断变化的气候至关重要.
研究的目的:
- 评估31个葡萄品种的休眠芽耐寒性和冷却要求的变化.
- 为了评估整个季节的脱适应率和休眠进展.
- 调查气候适应,耐寒性,脱适应和芽现象学之间的关系.
主要方法:
- 差异热分析用于监测冷性变化.
- 评估去适应性阻力,以追踪休眠状态的进展.
- 在三年内分析冷却时间要求和脱适应率.
主要成果:
- 在葡萄品种之间观察到最大脱习速率 (1.03 - 2.87 °C/天) 的显著变化.
- 种植来源和野生物种分布与耐寒性和脱适应率相关,表明气候适应性特征.
- 发现冬季寒冷的耐寒性,脱适应率的变化和芽现象学之间存在关联.
结论:
- 脱适应潜力揭示了对各种品种冷却暴露的保留反应.
- 这些发现挑战了对高/低冷品种和葡萄树冷要求的传统解释.
- 结果为气候变化情景下葡萄树的育种和管理提供了见解.
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