2026-04-18T00:06:27Zhttps://recercat.cat/oai/request

oai:recercat.cat:20.500.12327/37112025-10-22T11:13:28Zcom_2072_4428com_2072_4427col_2072_487898

00925njm 22002777a 4500 dc Gracia-Romero, Adrian author Segarra, Joel author Rezzouk, Fatima Zahra author Aparicio, Nieves author Kefauver, Shawn C. author Araus, José Luis author 2025-02-12 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 (Fs) and maximum fluorescence yield (Fm′) 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). Gracia-Romero, Adrian, Joel Segarra, Fatima Zahra Rezzouk, Nieves Aparicio, Shawn C. Kefauver, and 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 15 (4) : 385. https://doi.org/10.3390/agriculture15040385. 2077-0472 http://hdl.handle.net/20.500.12327/3711 https://doi.org/10.3390/agriculture15040385 In-Field Phenotyping Using the Low-Cost and Open Access Fluorescence PhotosynQ Multispeq Sensor Together with NDVI: A Case Study with Durum Wheat