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Quinoa_Chileanfieldtrial

Abstract

This ARC represents the data described in the following publication:

Publication

Title: Morphological and Physiological Traits Associated with Yield under Reduced Irrigation in Chilean Coastal Lowland Quinoa

Authors: Dumschott, K.★; Wuyts, N.★; Alfaro, C.; Castillo, D.; Fiorani✉️, F.; Zurita-Silva✉️
★These authors contributed equally to this work
✉️ Corresponding authors

Information: Plants 2022, 11, 323. https://doi.org/10.3390/plants11030323

Abstract: Quinoa (Chenopodium quinoa Willd.) is a genetically diverse crop that has gained popularity in recent years due to its high nutritional content and ability to tolerate abiotic stresses such as salinity and drought. Varieties from the coastal lowland ecotype are of particular interest due to their insensitivity to photoperiod and their potential to be cultivated in higher latitudes. We performed a field experiment in the southern Atacama Desert in Chile to investigate the responses to reduced irrigation of nine previously selected coastal lowland self-pollinated (CLS) lines and the commercial cultivar Regalona. We found that several lines exhibited a yield and seed size superior to Regalona, also under reduced irrigation. Plant productivity data were analyzed together with morphological and physiological traits measured at the visible inflorescence stage to estimate the contribution of these traits to differences between the CLS lines and Regalona under full and reduced irrigation. We applied proximal sensing methods and found that thermal imaging provided a promising means to estimate variation in plant water use relating to yield, whereas hyperspectral imaging separated lines in a different way, potentially related to photosynthesis as well as water use.

Keywords: Chenopodium quinoa Willd.; field trial; hyperspectral imaging; phenotyping; quinoa; reduced irrigation; thermal imaging; yield

Investigators

  • Kathryn Dumschott (Institute of Bio- and Geosciences, Bioinformatics (IBG-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany; Institute for Biology I, BioSC, RWTH Aachen University, 52056 Aachen, Germany)
  • Nathalie Wuyts (Institute of Bio- and Geosciences, Plant Sciences (IBG-2), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany)
  • Christian Alfaro (Centro de Investigación Intihuasi (AZS), Instituto de Investigaciones Agropecuarias, La Serena 1722093, Chile; Centro de Investigación Rayentué (CA), Instituto de Investigaciones Agropecuarias, Rengo 2940000, Chile; Centro de Investigación Quilamapu, Instituto de Investigaciones Agropecuarias, Chillán 3780000, Chile)
  • Dalma Castillo (Centro de Investigación Intihuasi (AZS), Instituto de Investigaciones Agropecuarias, La Serena 1722093, Chile; Centro de Investigación Rayentué (CA), Instituto de Investigaciones Agropecuarias, Rengo 2940000, Chile; Centro de Investigación Quilamapu, Instituto de Investigaciones Agropecuarias, Chillán 3780000, Chile)
  • Fabio Fiorani (Institute of Bio- and Geosciences, Plant Sciences (IBG-2), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany)
  • Andrés Zurita-Silva (Centro de Investigación Intihuasi (AZS), Instituto de Investigaciones Agropecuarias, La Serena 1722093, Chile; Centro de Investigación Rayentué (CA), Instituto de Investigaciones Agropecuarias, Rengo 2940000, Chile; Centro de Investigación Quilamapu, Instituto de Investigaciones Agropecuarias, Chillán 3780000, Chile)****

Funding

This trial was conducted as part of the BMBF funded project "QUINOA DIVERSITY- Quinoa Phenotypic and Genotypic Diversity for Yield and Composition" https://www.kooperation-international.de/laender/amerika/chile/projekte-chile/detail-laendereinstiegsseite/info/biooekonomie-international-2015-quinoa-diversity-untersuchungen-zur-phaenotypischen-und-genotypisch-5

Project Description

Responses to full and reduced irrigation were investigated for nine coastal lowland self-pollinated quinoa lines (CLS-1 to CLS-9) and one commercial cultivar cv Regalona (REGA) in the field. The trial took place at the INIA-Huasco experimental center located in the southern Atacama Desert (Vallenar, Chile, 28°34′ S, 70°47′ W and 469 m.a.s.l.) during the 2019/2020 growing season (sowing on 26 September 2019, harvest on 21 February 2020).

Data Overview

Data included:

  • Agronomical traits at harvest
  • Imaging data
    • Thermal infrared imaging
    • Hyperspectral imaging
  • Chlorophyll fluorescence
  • Phenology
  • Relative water content
  • Weather Data

ARC Structure

This ARC is organized as follows:

  • Study: Description of the field trial, including genotypes used, soil characteristics, and Experimental design.
  • Assays: Each assay represents a specific technical analysis performed to characterize quinoa responses within the trial.

Study