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Impact of Combined Drought and Heat Stress and Nitrogen on Winter Wheat Productivity and End-Use Quality

Statkeviciute, Grazina and Liatukas, Žilvinas and Ceseviciene, Jurgita and Jaskune, Kristina and Armoniené, Rita and Kuktaite, Ramune and Brazauskas, Gintaras (2022). Impact of Combined Drought and Heat Stress and Nitrogen on Winter Wheat Productivity and End-Use Quality. Agronomy. 12 :6 , 1452
[Research article]

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Abstract

Water deficit and heat stress are the main abiotic stresses affecting the yield and quality of winter wheat. The increasing frequency of the simultaneous occurrence of these two stresses might threaten global food security and drives the need to breed resilient high-quality cultivars. The aim of this study was to evaluate the grain yield, quality and gluten protein characteristics in 50 winter wheat cultivars and breeding lines during the harvest years of 2018 and 2019. The yield and grain quality components were affected more severely by the combined heat and drought in 2019 than the drought in 2018. Two nitrogen (N) fertilization regimes were studied, sustainable (S, 15/100/30 kg N ha(-1)) and high-input (HI, 15/100/100 kg N ha(-1)). The yield was higher in HI trials compared to S trials by 2.2 t ha(-1) in 2018 and by 2.4 t ha(-1) in 2019. Higher protein content and sedimentation volume and lower yield, test weight and starch content were observed under combined heat and drought stress in 2019 compared to 2018. Genotypes containing the Glu-D1 x5-y10 allele exhibited the higher amounts of unextractable polymeric proteins (%UPP = 58.5%) in gluten studied by size exclusion liquid chromatography (SE-HPLC) as compared to Glu-D1 x2-y12 allele (%UPP = 54.3%). Genotype was the main determinant of gluten protein characteristics regardless of the nitrogen application and the abiotic stress conditions. The results suggest that the relatively mild drought and heat events in Lithuania might not threaten gluten quality in the future; however, breeding efforts should be directed towards improved drought and heat stress resistance to ensure stable wheat productivity in the region.

Authors/Creators:Statkeviciute, Grazina and Liatukas, Žilvinas and Ceseviciene, Jurgita and Jaskune, Kristina and Armoniené, Rita and Kuktaite, Ramune and Brazauskas, Gintaras
Title:Impact of Combined Drought and Heat Stress and Nitrogen on Winter Wheat Productivity and End-Use Quality
Series Name/Journal:Agronomy
Year of publishing :2022
Volume:12
Number:6
Article number:1452
Number of Pages:14
Publisher:MDPI
ISSN:2073-4395
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:drought stress, gluten protein composition, heat stress, polymeric protein
URN:NBN:urn:nbn:se:slu:epsilon-p-118290
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118290
Additional ID:
Type of IDID
DOI10.3390/agronomy12061452
Web of Science (WoS)000816000600001
ID Code:28695
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:01 Sep 2022 07:28
Metadata Last Modified:01 Sep 2022 07:31

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