Antitranspirant treatment on bean plants to counteract cold stress.
Antitranspirant treatment on bean plants to counteract cold stress.
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DOI：
10.26353/j.itahort/2020.2.5565
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发表时间：
2020-01-01
期刊：
影响因子：
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通讯作者：
Ferrante, Antonio
中科院分区：
文献类型：
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作者：
Bulgari, Roberta;Turconi, Paolo;Ferrante, Antonio
本试验旨在研究抗蒸腾剂ScudothermR对菜豆冷害的防治效果。进行了两次测试：第一次在2018年6月至7月之间，第二次在2019年5月至6月之间。植物在温室中、在塑料盆（10盆/处理）中、在泥炭基质上生长。在胁迫前24小时通过叶面施用对三周龄的植物进行处理。实验设计包括用2%的ScudothermR处理，与未处理和未应激的对照以及未处理但应激的对照（对照用自来水喷洒）相比。通过将植物置于3-4°C下48小时来诱导冷胁迫。进行了体内和破坏性分析，以评估植物的健康状况，压力后立即和一周的恢复期后。对三个生物复制品进行分析。没有观察到显着的影响，在体内叶绿素，叶绿素a荧光参数，次生代谢产物（花青素和酚类指数），和脂质过氧化处理。在糖的代谢中发现了显著的变化。ScudothermR允许维持与对照相似的蔗糖浓度并且低于胁迫植物。在第一年，总糖也记录了类似的行为。这些结果表明，ScudothermR能够减轻低温的一些负面影响，作为叶片的物理屏障，具有间接的生理和生化作用。
The aim of the work was to test the efficacy of the antitranspirant ScudothermR in preventing cold damages on Phaseolus vulgaris L. Two tests were conducted: the first between June-July 2018, and the second between May-June 2019. Plants were grown in a greenhouse, in plastic pots (10 pots/treatment), on a peaty substrate. Treatments were carried out on three-week-old plants, by foliar application 24 hours before the stress. The experimental design included treatments with ScudothermR at 2% compared to an untreated and unstressed control, and to an untreated but stressed control (controls were sprayed with tap water). The cold stress was induced by placing the plants at 3-4°C, for 48 hours. Both in vivo and destructive analyzes were performed to evaluate the health status of plants, immediately after stress and after a one-week recovery period. The analyzes were performed on three biological replications. No significant effect of the treatments was observed on chlorophylls in vivo, chlorophyll a fluorescence parameters, secondary metabolites (anthocyanins and phenolic index), and lipid peroxidation. Significant variations were found in the metabolism of the sugars. ScudothermR allowed maintaining the sucrose concentration similar to control and lower than stressed plants. During the first year, a similar behavior was also recorded for total sugars. These results suggested that ScudothermR is able to mitigate some of the negative consequences of low temperatures, acting as a physical barrier on leaves, with an indirect physiological and biochemical effect.