Articles
Phenotyping of almond rootstocks for the assessment of evapotranspiration using remote sensing energy balance models
Article number
1406_62
Pages
441 – 446
Language
English
Abstract
One of the main factors that has influenced the increase of the almond surface in Spain has been the incorporation of new plant material.
The selection and study of the behavior of almond rootstocks is a widely appreciable activity in fruit production.
However, in a scenario of climate change, breeding new rootstocks with higher water-use efficiency (WUE) is seen as a solution to adapt fruit production to future climate changes.
In order to achieve it, there is a need to integrate new tools and technologies into existing breeding programs.
In recent years, proximal and remote sensing technologies have increasingly been used to assess vegetation in the context of field-based phenotyping (FBP). This study aims to demonstrate the potential of using remote sensing technologies to evaluate the WUE performance of different almond rootstocks (Cadaman®, Garnem®, INRA GF-677, IRTA 1, IRTA 2, Ishtara®, Adesoto, Rootpac® 20, Rootpac® 40, and Rootpac® R). The study was conducted in an experimental orchard located in Les Borges Blanques (Lleida, Spain) during different years.
High-resolution airborne thermal and multispectral image acquisition were obtained.
Stem water potential (Ψstem) and vegetative structural measurements were conducted concomitant to image acquisition.
The two-source energy balance (TSEB) was used to estimate the actual evapotranspiration of each individual tree.
Results followed the same pattern for all dates and were able to distinguish differences in evapotranspiration rates between rootstocks.
The relationship between Ψstem and evapotranspiration in rootstocks under different water regimes was also assessed.
The selection and study of the behavior of almond rootstocks is a widely appreciable activity in fruit production.
However, in a scenario of climate change, breeding new rootstocks with higher water-use efficiency (WUE) is seen as a solution to adapt fruit production to future climate changes.
In order to achieve it, there is a need to integrate new tools and technologies into existing breeding programs.
In recent years, proximal and remote sensing technologies have increasingly been used to assess vegetation in the context of field-based phenotyping (FBP). This study aims to demonstrate the potential of using remote sensing technologies to evaluate the WUE performance of different almond rootstocks (Cadaman®, Garnem®, INRA GF-677, IRTA 1, IRTA 2, Ishtara®, Adesoto, Rootpac® 20, Rootpac® 40, and Rootpac® R). The study was conducted in an experimental orchard located in Les Borges Blanques (Lleida, Spain) during different years.
High-resolution airborne thermal and multispectral image acquisition were obtained.
Stem water potential (Ψstem) and vegetative structural measurements were conducted concomitant to image acquisition.
The two-source energy balance (TSEB) was used to estimate the actual evapotranspiration of each individual tree.
Results followed the same pattern for all dates and were able to distinguish differences in evapotranspiration rates between rootstocks.
The relationship between Ψstem and evapotranspiration in rootstocks under different water regimes was also assessed.
Authors
J. Bellvert, A. Pelechá, L. Zazurca, X. Miarnau
Keywords
evapotranspiration, TSEB, phenotyping
Groups involved
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