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Technischen Universität München (2011)

Development of non-contacting high throughput sensing to determine drought stress in wheat and maize

Elsayed, Salah

Titre : Development of non-contacting high throughput sensing to determine drought stress in wheat and maize

Entwicklung von berührungsloser Hochdurchsatz-Sensorik zur Bestimmung von Wasserstress in Weizen und Mais

Auteur : Elsayed, Salah

Université de soutenance : Technischen Universität München

Grade  : Doktors der Agrarwissenschaften (Dr. agr.) 2011

Résumé
The study observed the potential of spectral reflectance, laser induced chlorophyll fluorescence, and infrared measurement for the detection of drought stress parameters like leaf water potential, plant water content, and canopy temperature. The results of reflection measurements under controlled and field conditions showed that spectral indices are good indicators for plant water content in wheat. Measurements of chlorophyll fluorescence under field conditions resulted in a close relationship between plant water content and fluorescence at 690 and 730 nm and to the biomass index. The canopy temperature showed a good relation to plant water content as well. These technologies therefore offer an opportunity to efficiently detect water status of plants. With ongoing climate change, the results of this study are first approaches for better management and selection methods in plant production. « 

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Page publiée le 8 novembre 2011, mise à jour le 10 janvier 2019