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

被引：0
作者：
Gracia-Romero, Adrian [1 ,2 ,3 ]
Segarra, Joel [1 ,2 ]
Rezzouk, Fatima Zahra [1 ,2 ]
Aparicio, Nieves [4 ]
Kefauver, Shawn C. [1 ,2 ]
Araus, Jose Luis [1 ,2 ]
机构：
[1] Univ Barcelona, Fac Biol, Plant Physiol Sect, Integrat Crop Ecophysiol Grp, Barcelona 08028, Spain
[2] Agrotecnio, Ctr Res Agrotechnol, Av Rovira Roure 191, Lleida 25198, Spain
[3] Inst Food & Agr Res & Technol IRTA, Field Crops Program, Lleida 251981, Spain
[4] Agro Technol Inst Castilla & Leon ITACyL, Ctra Burgos 119, Valladolid 47071, Spain
来源：
AGRICULTURE-BASEL | 2025年 / 15卷 / 04期
关键词：
durum wheat; NDVI; chlorophyll fluorescence; phenotyping; CHLOROPHYLL FLUORESCENCE; WATER-STRESS; YIELD;
D O I：
10.3390/agriculture15040385
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
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).
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页数：15
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