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Investigating Combined Drought- and Heat Stress Effects in Wheat under Controlled Conditions by Dynamic Image-Based Phenotyping

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Investigating Combined Drought- and Heat Stress Effects in Wheat under Controlled Conditions by Dynamic Image-Based Phenotyping. / Abdelhakim, Lamis; Rosenkvist, Eva; Wollenweber, Bernd; Spyroglou, Ioannis; Ottosen, Carl-Otto; Panzarová, Klára.

In: Agronomy, Vol. 11, No. 2, 364, 02.2021.

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@article{8cebe957ddb74b4e87ee436d559d119a,
title = "Investigating Combined Drought- and Heat Stress Effects in Wheat under Controlled Conditions by Dynamic Image-Based Phenotyping",
abstract = "As drought and heat stress are major challenges for crop productivity under future climate changes, tolerant cultivars are highly in demand. This study investigated the potential of existing Nordic wheat genotypes to resist unfavorable conditions. Four genotypes were selected based on their heat sensitivity (heat-sensitive: LM19, SF1; heat-tolerant: LM62, NS3). At the tillering stage, the plants were subjected to four treatments under controlled conditions: control, drought, heat and combined drought and heat stress. The morpho-physiological performance was quantified during the early and late phase of stress, as well as the recovery phase. We applied an integrative image-based phenotyping approach monitoring plant growth dynamics by structural Red Green Blue (RGB) imaging, photosynthetic performance by chlorophyll fluorescence imaging and transpiration efficiency by thermal infrared imaging. The results demonstrated that the selected genotypes were moderately affected in their photosynthetic efficiency and growth under drought stress, whereas heat and combined stress caused rapid reductions in photosynthesis and growth. Furthermore, drought stress had a major impact on canopy temperature. The NS3 genotype was the most robust genotype, as indicated by its improved response under all stress treatments due to its relatively small biomass. However, the genotypes showed different tolerance to individual and combined stress",
keywords = "climate change, drought, heat stress, image-based phenotyping, RGB imaging, chlorophyll fluorescence imaging, therman infrared imaging, climate change, drought, heat stress, image-based phenotyping, RGB imaging, chlorophyll fluorescence imaging, thermal infrared imaging",
author = "Lamis Abdelhakim and Eva Rosenkvist and Bernd Wollenweber and Ioannis Spyroglou and Carl-Otto Ottosen and Kl{\'a}ra Panzarov{\'a}",
year = "2021",
month = feb,
doi = "10.3390/agronomy11020364",
language = "English",
volume = "11",
journal = "Agronomy",
issn = "2073-4395",
publisher = "MDPI",
number = "2",

}

RIS

TY - JOUR

T1 - Investigating Combined Drought- and Heat Stress Effects in Wheat under Controlled Conditions by Dynamic Image-Based Phenotyping

AU - Abdelhakim, Lamis

AU - Rosenkvist, Eva

AU - Wollenweber, Bernd

AU - Spyroglou, Ioannis

AU - Ottosen, Carl-Otto

AU - Panzarová, Klára

PY - 2021/2

Y1 - 2021/2

N2 - As drought and heat stress are major challenges for crop productivity under future climate changes, tolerant cultivars are highly in demand. This study investigated the potential of existing Nordic wheat genotypes to resist unfavorable conditions. Four genotypes were selected based on their heat sensitivity (heat-sensitive: LM19, SF1; heat-tolerant: LM62, NS3). At the tillering stage, the plants were subjected to four treatments under controlled conditions: control, drought, heat and combined drought and heat stress. The morpho-physiological performance was quantified during the early and late phase of stress, as well as the recovery phase. We applied an integrative image-based phenotyping approach monitoring plant growth dynamics by structural Red Green Blue (RGB) imaging, photosynthetic performance by chlorophyll fluorescence imaging and transpiration efficiency by thermal infrared imaging. The results demonstrated that the selected genotypes were moderately affected in their photosynthetic efficiency and growth under drought stress, whereas heat and combined stress caused rapid reductions in photosynthesis and growth. Furthermore, drought stress had a major impact on canopy temperature. The NS3 genotype was the most robust genotype, as indicated by its improved response under all stress treatments due to its relatively small biomass. However, the genotypes showed different tolerance to individual and combined stress

AB - As drought and heat stress are major challenges for crop productivity under future climate changes, tolerant cultivars are highly in demand. This study investigated the potential of existing Nordic wheat genotypes to resist unfavorable conditions. Four genotypes were selected based on their heat sensitivity (heat-sensitive: LM19, SF1; heat-tolerant: LM62, NS3). At the tillering stage, the plants were subjected to four treatments under controlled conditions: control, drought, heat and combined drought and heat stress. The morpho-physiological performance was quantified during the early and late phase of stress, as well as the recovery phase. We applied an integrative image-based phenotyping approach monitoring plant growth dynamics by structural Red Green Blue (RGB) imaging, photosynthetic performance by chlorophyll fluorescence imaging and transpiration efficiency by thermal infrared imaging. The results demonstrated that the selected genotypes were moderately affected in their photosynthetic efficiency and growth under drought stress, whereas heat and combined stress caused rapid reductions in photosynthesis and growth. Furthermore, drought stress had a major impact on canopy temperature. The NS3 genotype was the most robust genotype, as indicated by its improved response under all stress treatments due to its relatively small biomass. However, the genotypes showed different tolerance to individual and combined stress

KW - climate change

KW - drought

KW - heat stress

KW - image-based phenotyping

KW - RGB imaging

KW - chlorophyll fluorescence imaging

KW - therman infrared imaging

KW - climate change

KW - drought

KW - heat stress

KW - image-based phenotyping

KW - RGB imaging

KW - chlorophyll fluorescence imaging

KW - thermal infrared imaging

U2 - 10.3390/agronomy11020364

DO - 10.3390/agronomy11020364

M3 - Journal article

VL - 11

JO - Agronomy

JF - Agronomy

SN - 2073-4395

IS - 2

M1 - 364

ER -