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首页> 外文期刊>Acta Physiologiae Plantarum >Physiological response of sugar beet (Beta vulgaris) genotypes to a temporary water deficit, as evaluated with a multiparameter fluorescence sensor
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Physiological response of sugar beet (Beta vulgaris) genotypes to a temporary water deficit, as evaluated with a multiparameter fluorescence sensor

机译：用多参数荧光传感器评估的甜菜（甜菜）基因型对暂时缺水的生理响应

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摘要

Greenhouse and field experiments were carried out to evaluate the potential of specific fluorescence emission parameters for the detection of a temporary water deficit in selected sugar beet (Beta vulgaris L.) genotypes. Changes in the plant physiology due to reduced water availability were recorded with a multiparameter fluorescence sensor in addition to destructive and non-invasive reference analysis. Our results show that an insufficient water supply is followed by only slight changes of the UV-excited blue fluorescence. However, significant alterations due to desiccation were detected in several chlorophyll fluorescence parameters measured after excitation with UV, green and red light. In the scope of our activities, the relevance of the green light source for the fluorescence excitation became evident and enabled to characterize cultivar-specific reactions during dehydration and re-watering period. A field experiment was conducted to validate the data collected in the greenhouse. As proven, several days of low water supply led to effects similar to those observed in the greenhouse study. Our results indicate that the far-red fluorescence, as well as the simple and complex fluorescence ratios having the chlorophyll fluorescence as basis, is the appropriate parameter to evaluate physiological responses of sugar beet plants exposed to a short-term, temporary water deficit.
机译：进行了温室和田间试验，以评估特定荧光发射参数在检测所选甜菜（Bet vulgaris L.）基因型中暂时缺水的潜力。除了破坏性和非侵入性参考分析外，还使用多参数荧光传感器记录了因水供应减少而引起的植物生理变化。我们的结果表明，供水不足后，紫外线激发的蓝色荧光仅发生微小变化。但是，在紫外线，绿光和红光激发后测得的一些叶绿素荧光参数中，检测到由于干燥引起的显着变化。在我们的活动范围内，绿色光源与荧光激发的相关性变得显而易见，并能够表征脱水和复水期间特定品种的反应。进行了现场实验，以验证温室中收集的数据。事实证明，几天的供水不足导致了类似于温室研究中观察到的效果。我们的结果表明，远红光荧光以及以叶绿素荧光为基础的简单和复杂荧光比率，是评估暴露于短期，暂时缺水的甜菜植物生理响应的合适参数。

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