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Grapevine xylem adaptation to drought studied by reflectance spectroscopy

Laura Rustioni | DISAA, Università di Milano, Italia

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This work was presented at PREMIO ASSOENOLOGI VERSINI 2017: Mathematical models were developed to predict the expected drought tolerance score. Furthermore, a method based on reflectance spectroscopy was developed to obtain a xylem hydrophobicity index. Furthermore, a method based on reflectance spectroscopy was developed to obtain a xylem hydrophobicity index. If you are a subscriber, you can access the video directly from this link→

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Description

Together with stomatal conductance and root conductivity, the stem water reserve and transport systems could be mechanisms able to participate in the regulation of the plant water status.

Lianas, such as Vitis spp., minimize the trunk support role, and stems have evolved to improve their ability in water transport.

This contribution summarizes two recent publications produced by this research team. The first experiment, carried out in 2014, demonstrated detectable changes in the reflectance spectra of grapevine woody tissues, caused by drought conditions.

In the second experiment, stems of 10 different Vitis species were studied and mathematical models were developed to predict the expected drought tolerance score.. Furthermore, a method based on reflectance spectroscopy was developed to obtain a xylem hydrophobicity index.

The results obtained could in the future help to select drought-resistant rootstocks.

Work presented at Premio ASSOENOLOGI VERSINI 2017. The report reproduced in this video was presented at the 10th edition of Enoforum (Vicenza, 16-18 May 2017)