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Article

Rapid On-Site Phenotyping via Field Fluorimeter Detects Differences in Photosynthetic Performance in a Hybrid—Parent Barley Germplasm Set

1
Department of Genetics and Plant Production, Aula Dei Experimental Station (EEAD-CSIC), Avda. Montañana 1005, E-50059 Zaragoza, Spain
2
Syngenta Seeds SAS, 12 Chemin de l’Hobit, 31790 Saint Sauveur, France
3
Agrobiotechnology Institute (IdAB), CSIC-Gobierno de Navarra, Avda. de Pamplona 123, 31192 Mutilva, Navarra, Spain
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(5), 1486; https://doi.org/10.3390/s20051486
Received: 23 January 2020 / Revised: 3 March 2020 / Accepted: 5 March 2020 / Published: 8 March 2020
(This article belongs to the Special Issue Low-Cost Sensors and Vectors for Plant Phenotyping)
Crop productivity can be expressed as the product of the amount of radiation intercepted, radiation use efficiency and harvest index. Genetic variation for components of radiation use efficiency has rarely been explored due to the lack of appropriate equipment to determine parameters at the scale needed in plant breeding. On the other hand, responses of the photosynthetic apparatus to environmental conditions have not been extensively investigated under field conditions, due to the challenges posed by the fluctuating environmental conditions. This study applies a rapid, low-cost, and reliable high-throughput phenotyping tool to explore genotypic variation for photosynthetic performance of a set of hybrid barleys and their parents under mild water-stress and unstressed field conditions. We found differences among the genotypic sets that are relevant for plant breeders and geneticists. Hybrids showed lower leaf temperature differential and higher non-photochemical quenching, resembling closer the male parents. The combination of traits detected in hybrids seems favorable, and could indicate improved photoprotection and better fitness under stress conditions. Additionally, we proved the potential of a low-cost, field-based phenotyping equipment to be used routinely in barley breeding programs for early screening for stress tolerance. View Full-Text
Keywords: chlorophyll fluorescence; photoprotection; proximal sensing; hybrid breeding; drought stress chlorophyll fluorescence; photoprotection; proximal sensing; hybrid breeding; drought stress
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MDPI and ACS Style

Fernández-Calleja, M.; Monteagudo, A.; Casas, A.M.; Boutin, C.; Pin, P.A.; Morales, F.; Igartua, E. Rapid On-Site Phenotyping via Field Fluorimeter Detects Differences in Photosynthetic Performance in a Hybrid—Parent Barley Germplasm Set. Sensors 2020, 20, 1486. https://doi.org/10.3390/s20051486

AMA Style

Fernández-Calleja M, Monteagudo A, Casas AM, Boutin C, Pin PA, Morales F, Igartua E. Rapid On-Site Phenotyping via Field Fluorimeter Detects Differences in Photosynthetic Performance in a Hybrid—Parent Barley Germplasm Set. Sensors. 2020; 20(5):1486. https://doi.org/10.3390/s20051486

Chicago/Turabian Style

Fernández-Calleja, Miriam, Arantxa Monteagudo, Ana M. Casas, Christophe Boutin, Pierre A. Pin, Fermín Morales, and Ernesto Igartua. 2020. "Rapid On-Site Phenotyping via Field Fluorimeter Detects Differences in Photosynthetic Performance in a Hybrid—Parent Barley Germplasm Set" Sensors 20, no. 5: 1486. https://doi.org/10.3390/s20051486

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