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In-Field Phenotyping Using the Low-Cost and Open Access Fluorescence PhotosynQ Multispeq Sensor Together with NDVI: A Case Study with Durum Wheat

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  • Adrian Gracia-Romero

    (Integrative Crop Ecophysiology Group, Plant Physiology Section, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
    Agrotecnio (Center for Research in Agrotechnology), Av. Rovira Roure 191, 25198 Lleida, Spain
    Field Crops Program, Institute for Food and Agricultural Research and Technology (IRTA), 251981 Lleida, Spain)

  • Joel Segarra

    (Integrative Crop Ecophysiology Group, Plant Physiology Section, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
    Agrotecnio (Center for Research in Agrotechnology), Av. Rovira Roure 191, 25198 Lleida, Spain)

  • Fatima Zahra Rezzouk

    (Integrative Crop Ecophysiology Group, Plant Physiology Section, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
    Agrotecnio (Center for Research in Agrotechnology), Av. Rovira Roure 191, 25198 Lleida, Spain)

  • Nieves Aparicio

    (Agro-Technological Institute of Castilla y León (ITACyL), Ctra de Burgos 119, 47071 Valladolid, Spain)

  • Shawn C. Kefauver

    (Integrative Crop Ecophysiology Group, Plant Physiology Section, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
    Agrotecnio (Center for Research in Agrotechnology), Av. Rovira Roure 191, 25198 Lleida, Spain)

  • José Luis Araus

    (Integrative Crop Ecophysiology Group, Plant Physiology Section, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
    Agrotecnio (Center for Research in Agrotechnology), Av. Rovira Roure 191, 25198 Lleida, Spain)

Abstract

Durum wheat production is concentrated in Mediterranean climate regions, making it essential to develop cultivars that adapt to its changing conditions, including water and heat stress. In this regard, photosynthetic capacity estimates may help improve the selection of the most adapted cultivars. However, the cost and inherent low throughput of the usual methodological approaches makes, in many cases, phenotyping unfeasible, particularly under field conditions. This study uses leaf photosynthetic measurements taken with a low-cost handheld chlorophyll sensor (MultispeQ Photosynq) and a biomass sensitive sensor (GreenSeeker) measuring the normalized difference vegetation index (NDVI) to assess the performance of six modern durum wheat cultivars. The sensors were employed at anthesis and grain filling under two different types of management (rainfed and support irrigation) for two growing seasons. Compared to irrigated plants, rainfed trials had significantly lower photosynthetic performance during the two phenological stages evaluated. Significant genotype differences in steady-state fluorescence yield (F s ) and maximum fluorescence yield (F m′ ) across treatments and crop seasons were found. This study shows that leaf chlorophyll fluorescence parameters can be used to select modern wheat cultivars with an open-source, low-cost, handheld sensor (Photosynq).

Suggested Citation

  • Adrian Gracia-Romero & Joel Segarra & Fatima Zahra Rezzouk & Nieves Aparicio & Shawn C. Kefauver & José Luis Araus, 2025. "In-Field Phenotyping Using the Low-Cost and Open Access Fluorescence PhotosynQ Multispeq Sensor Together with NDVI: A Case Study with Durum Wheat," Agriculture, MDPI, vol. 15(4), pages 1-15, February.
    • Handle: RePEc:gam:jagris:v:15:y:2025:i:4:p:385-:d:1589150
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    References listed on IDEAS

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    1. Rezzouk, Fatima Zahra & Gracia-Romero, Adrian & Kefauver, Shawn C. & Nieto-Taladriz, Maria Teresa & Serret, Maria Dolores & Araus, José Luis, 2022. "Durum wheat ideotypes in Mediterranean environments differing in water and temperature conditions," Agricultural Water Management, Elsevier, vol. 259(C).
    2. Cai, Yongyang & Golub, Alla A. & Hertel, Thomas W., 2017. "Agricultural research spending must increase in light of future uncertainties," Food Policy, Elsevier, vol. 70(C), pages 71-83.
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