Syrah and Grenache (Vitis vinifera) revealed different strategies to cope with high temperature

IF 2.5 3区农林科学 Q3 FOOD SCIENCE & TECHNOLOGY

Australian Journal of Grape and Wine Research Pub Date : 2022-01-13 DOI:10.1111/ajgw.12530

A.E. Gallo, J.E. Perez Peña, C.V. González, J.A. Prieto

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引用次数: 2

Abstract

Background and Aims

Global warming will threaten vineyard sustainability in warm and arid regions. Therefore, increasing water use efficiency (WUE) is essential for long-term viticulture sustainability. Nevertheless, studies concerning the response of stomata and WUE to temperature are scarce. We evaluated the effect of sustained warming on WUE and its components in cultivars with contrasting stomatal behaviour.

Methods and Results

We applied a 1.1°C increase in field-grown, well-watered plants, during the growing season and compared them to Control plants. We measured net assimilation (A_n), transpiration rate (E), stomatal conductance (g_s), stomata density and length, intrinsic and yield WUE (WUE_int and WUE_yield). Gas exchange and WUE_int in response to heating were cultivar-dependent. Heated Grenache plants increased A_n, g_s, E and stomatal length but decreased WUE_int. In contrast, gas exchange and WUE_int were similar between heated Syrah and Control plants. Both cultivars decreased WUE_yield in response to heating.

Conclusions

An increase in air temperature decreased WUE_int in Grenache, whereas Syrah could tolerate heating without modifying leaf functioning. We proposed these strategies to cope with heating as ‘avoiding’ for Grenache and ‘tolerant’ for Syrah in well-watered conditions.

Significance of the Study

This research contributes to an understanding of the strategies to cope with high temperature of different cultivars, which should be considered to select better-adapted genotypes for the expected warmer conditions.

Abstract Image

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西拉和歌海娜(Vitis vinifera)表现出不同的应对高温的策略

背景与目的全球变暖将威胁温暖干旱地区葡萄园的可持续性。因此，提高水分利用效率(WUE)对葡萄栽培的长期可持续性至关重要。然而，关于气孔和水分利用效率对温度响应的研究很少。我们评估了持续增温对不同品种水分利用效率及其组分的影响。方法与结果我们在生长季节将田间种植的水分充足的植株温度升高1.1°C，并与对照植株进行比较。我们测量了净同化(An)、蒸腾速率(E)、气孔导度(gs)、气孔密度和长度、内在和产量水分利用效率(WUEint和WUEyield)。气体交换和WUEint对加热的响应是不同品种的。受热后的海歌海娜植株的气孔长度、gs、E和气孔长度增加，但气孔长度降低。相比之下，加热后的西拉和对照植株之间的气体交换和WUEint相似。两个品种对加热的响应都降低了小麦产量。结论气温升高会降低歌海娜叶片的抗热能力，而西拉叶片的抗热能力不受影响。我们提出了这些策略来应对加热，因为在水分充足的条件下，歌海娜是“避免”的，西拉是“容忍”的。研究的意义本研究有助于了解不同品种应对高温的策略，以选择更好地适应预期温暖条件的基因型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Australian Journal of Grape and Wine Research 工程技术-食品科技

CiteScore

5.30

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： The Australian Journal of Grape and Wine Research provides a forum for the exchange of information about new and significant research in viticulture, oenology and related fields, and aims to promote these disciplines throughout the world. The Journal publishes results from original research in all areas of viticulture and oenology. This includes issues relating to wine, table and drying grape production; grapevine and rootstock biology, genetics, diseases and improvement; viticultural practices; juice and wine production technologies; vine and wine microbiology; quality effects of processing, packaging and inputs; wine chemistry; sensory science and consumer preferences; and environmental impacts of grape and wine production. Research related to other fermented or distilled beverages may also be considered. In addition to full-length research papers and review articles, short research or technical papers presenting new and highly topical information derived from a complete study (i.e. not preliminary data) may also be published. Special features and supplementary issues comprising the proceedings of workshops and conferences will appear periodically.