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Does cyclic water stress damage wheat yield more than a single stress?

The occurrence of water stress during wheat growth is more frequent due to climate change. Three experiments (cyclic drought, cyclic waterlogging, and cyclic drought plus waterlogging) were conducted to investigate the effects of mild and severe cyclic/single water stress at elongation and heading s... Full description

Journal Title: PloS one 2018, Vol.13(4), p.e0195535
Main Author: Ding, Jinfeng
Other Authors: Huang, Zhengjin , Zhu, Min , Li, Chunyan , Zhu, Xinkai , Guo, Wenshan
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1932-6203 ; DOI: 10.1371/journal.pone.0195535
Link: http://search.proquest.com/docview/2023734827/?pq-origsite=primo
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recordid: proquest2023734827
title: Does cyclic water stress damage wheat yield more than a single stress?
format: Article
creator:
  • Ding, Jinfeng
  • Huang, Zhengjin
  • Zhu, Min
  • Li, Chunyan
  • Zhu, Xinkai
  • Guo, Wenshan
subjects:
  • Biomass–Growth & Development
  • China–Physiology
  • Climate Change–Growth & Development
  • Dehydration–Physiology
  • Droughts–Metabolism
  • Edible Grain–Metabolism
  • Rain–Metabolism
  • Seasons–Metabolism
  • Triticum–Metabolism
  • Water–Metabolism
  • Water
ispartof: PloS one, 2018, Vol.13(4), p.e0195535
description: The occurrence of water stress during wheat growth is more frequent due to climate change. Three experiments (cyclic drought, cyclic waterlogging, and cyclic drought plus waterlogging) were conducted to investigate the effects of mild and severe cyclic/single water stress at elongation and heading stages on winter wheat (Triticum aestivum L.) yield. The effect of either mild drought at elongation or mild waterlogging at heading on wheat yield was not significant; however, significance did occur under other single water stresses. As the stress becomes more severe, the yield loss significantly increases. Extreme drought/waterlogging treatment at elongation caused a greater yield penalty than stress at heading stage. Except the combination of mild drought and mild waterlogging treatment, cyclic water stress significantly decreased wheat yields. The decrease in wheat yield under cyclic severe drought and waterlogging was significantly higher than any other treatment, with percentage decreases of 71.52 and 73.51%, respectively. In general, a yield reduction from mild cyclic water stress did not indicate more severe damage than single treatments; in contrast, grain yield suffered more when water stress occurred again after severe drought and waterlogging. Drought during elongation significantly decreased kernel number, whereas drought at heading/waterlogging during elongation and heading decreased the spike weight, which might be the main reason for the yield penalty. Furthermore, water stress caused variation in the decrease of total biomass and/or harvest index. The present study indicates comprehensive understanding of the types, degree, and stages of water stress are essential for assessing the impact of multiple water stresses on wheat yield.
language: eng
source:
identifier: E-ISSN: 1932-6203 ; DOI: 10.1371/journal.pone.0195535
fulltext: fulltext
issn:
  • 19326203
  • 1932-6203
url: Link


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titleDoes cyclic water stress damage wheat yield more than a single stress?
creatorDing, Jinfeng ; Huang, Zhengjin ; Zhu, Min ; Li, Chunyan ; Zhu, Xinkai ; Guo, Wenshan
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subjectBiomass–Growth & Development ; China–Physiology ; Climate Change–Growth & Development ; Dehydration–Physiology ; Droughts–Metabolism ; Edible Grain–Metabolism ; Rain–Metabolism ; Seasons–Metabolism ; Triticum–Metabolism ; Water–Metabolism ; Water
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descriptionThe occurrence of water stress during wheat growth is more frequent due to climate change. Three experiments (cyclic drought, cyclic waterlogging, and cyclic drought plus waterlogging) were conducted to investigate the effects of mild and severe cyclic/single water stress at elongation and heading stages on winter wheat (Triticum aestivum L.) yield. The effect of either mild drought at elongation or mild waterlogging at heading on wheat yield was not significant; however, significance did occur under other single water stresses. As the stress becomes more severe, the yield loss significantly increases. Extreme drought/waterlogging treatment at elongation caused a greater yield penalty than stress at heading stage. Except the combination of mild drought and mild waterlogging treatment, cyclic water stress significantly decreased wheat yields. The decrease in wheat yield under cyclic severe drought and waterlogging was significantly higher than any other treatment, with percentage decreases of 71.52 and 73.51%, respectively. In general, a yield reduction from mild cyclic water stress did not indicate more severe damage than single treatments; in contrast, grain yield suffered more when water stress occurred again after severe drought and waterlogging. Drought during elongation significantly decreased kernel number, whereas drought at heading/waterlogging during elongation and heading decreased the spike weight, which might be the main reason for the yield penalty. Furthermore, water stress caused variation in the decrease of total biomass and/or harvest index. The present study indicates comprehensive understanding of the types, degree, and stages of water stress are essential for assessing the impact of multiple water stresses on wheat yield.
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