Moderate Drought Stress Affected Root Growth and Grain Yield in Old, Modern and Newly Released Cultivars of Winter Wheat
To determine root growth and grain yield of winter wheat (Triticum aestivum L) under moderate drought stress, a nursery experiment and a field trial were conducted with or without water stress using three representative cultivars released in different years: CW134 (old landrace), CH58 (modern cultiv...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2017-05-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fpls.2017.00672/full |
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| author | Yinglong Chen Yinglong Chen Yinglong Chen Yan Fang Yan Fang Yanlei Du Yanlei Du Yanlei Du Jun Wang Aijiao Wu Aijiao Wu Sheng Qiao Bingcheng Xu Bingcheng Xu Suiqi Zhang Suiqi Zhang Kadambot H. M. Siddique |
| author_facet | Yinglong Chen Yinglong Chen Yinglong Chen Yan Fang Yan Fang Yanlei Du Yanlei Du Yanlei Du Jun Wang Aijiao Wu Aijiao Wu Sheng Qiao Bingcheng Xu Bingcheng Xu Suiqi Zhang Suiqi Zhang Kadambot H. M. Siddique |
| author_sort | Yinglong Chen |
| collection | DOAJ |
| description | To determine root growth and grain yield of winter wheat (Triticum aestivum L) under moderate drought stress, a nursery experiment and a field trial were conducted with or without water stress using three representative cultivars released in different years: CW134 (old landrace), CH58 (modern cultivar) and CH1 (new release). In the nursery experiment, plants were grown in soil-filled rhizoboxes under moderate drought (MD, 55% of field capacity) or well-watered (WW, 85% of field capacity) conditions. In the field trial, plots were either rainfed (moderate drought stress) or irrigated with 30 mm of water at each of stem elongation, booting and anthesis stages (irrigated). Compared to drought stress, grain yields increased under sufficient water supply in all cultivars, particular the newly released cultivar CH1 with 70% increase in the nursery and 23% in the field. When well-watered (nursery) or irrigated (field), CH1 had the highest grain yields compared to the other two cultivars, but produced similar yield to the modern cultivar (CH58) under water-stressed (nursery) or rainfed (field) conditions. When exposed to drought stress, CW134 had the highest topsoil root dry mass in topsoil but lowest in subsoil among the cultivars at stem elongation, anthesis, and maturity, respectively; while CH1 had the lowest topsoil and highest subsoil root dry mass at respective sampling times. Topsoil root mass and root length density were negatively correlated with grain yield for the two water treatments in nursery experiment. When water was limited, subsoil root mass was positively correlated with thousand kernel weight (TKW). In the field trial, CH1 and CH58 used less water during vegetative growth than CW134, but after anthesis stage, CH1 used more water than the other two cultivars, especially in the soil profile below 100 cm, which was associated with the increased TKW. This study demonstrated that greater root mass and root length density in subsoil layers, with enhanced access to subsoil water after anthesis, contribute to high grain yield when soil water is scarce. |
| first_indexed | 2024-04-12T06:07:26Z |
| format | Article |
| id | doaj.art-a0e4298c2ab14cd89d1b82a97576448d |
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| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-12T06:07:26Z |
| publishDate | 2017-05-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Plant Science |
| spelling | doaj.art-a0e4298c2ab14cd89d1b82a97576448d2022-12-22T03:44:50ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2017-05-01810.3389/fpls.2017.00672262623Moderate Drought Stress Affected Root Growth and Grain Yield in Old, Modern and Newly Released Cultivars of Winter WheatYinglong Chen0Yinglong Chen1Yinglong Chen2Yan Fang3Yan Fang4Yanlei Du5Yanlei Du6Yanlei Du7Jun Wang8Aijiao Wu9Aijiao Wu10Sheng Qiao11Bingcheng Xu12Bingcheng Xu13Suiqi Zhang14Suiqi Zhang15Kadambot H. M. Siddique16State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F UniversityYangling, ChinaInstitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water ResourcesYangling, ChinaThe UWA Institute of Agriculture, and UWA School of Agriculture and Environment, The University of Western Australia, PerthWA, AustraliaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F UniversityYangling, ChinaInstitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water ResourcesYangling, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F UniversityYangling, ChinaInstitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water ResourcesYangling, ChinaState Key Laboratory of Grassland Agro-ecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou UniversityLanzhou, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F UniversityYangling, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F UniversityYangling, ChinaInstitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water ResourcesYangling, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F UniversityYangling, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F UniversityYangling, ChinaInstitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water ResourcesYangling, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F UniversityYangling, ChinaInstitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water ResourcesYangling, ChinaThe UWA Institute of Agriculture, and UWA School of Agriculture and Environment, The University of Western Australia, PerthWA, AustraliaTo determine root growth and grain yield of winter wheat (Triticum aestivum L) under moderate drought stress, a nursery experiment and a field trial were conducted with or without water stress using three representative cultivars released in different years: CW134 (old landrace), CH58 (modern cultivar) and CH1 (new release). In the nursery experiment, plants were grown in soil-filled rhizoboxes under moderate drought (MD, 55% of field capacity) or well-watered (WW, 85% of field capacity) conditions. In the field trial, plots were either rainfed (moderate drought stress) or irrigated with 30 mm of water at each of stem elongation, booting and anthesis stages (irrigated). Compared to drought stress, grain yields increased under sufficient water supply in all cultivars, particular the newly released cultivar CH1 with 70% increase in the nursery and 23% in the field. When well-watered (nursery) or irrigated (field), CH1 had the highest grain yields compared to the other two cultivars, but produced similar yield to the modern cultivar (CH58) under water-stressed (nursery) or rainfed (field) conditions. When exposed to drought stress, CW134 had the highest topsoil root dry mass in topsoil but lowest in subsoil among the cultivars at stem elongation, anthesis, and maturity, respectively; while CH1 had the lowest topsoil and highest subsoil root dry mass at respective sampling times. Topsoil root mass and root length density were negatively correlated with grain yield for the two water treatments in nursery experiment. When water was limited, subsoil root mass was positively correlated with thousand kernel weight (TKW). In the field trial, CH1 and CH58 used less water during vegetative growth than CW134, but after anthesis stage, CH1 used more water than the other two cultivars, especially in the soil profile below 100 cm, which was associated with the increased TKW. This study demonstrated that greater root mass and root length density in subsoil layers, with enhanced access to subsoil water after anthesis, contribute to high grain yield when soil water is scarce.http://journal.frontiersin.org/article/10.3389/fpls.2017.00672/fulldrought stressroot massroot length densitysemi-arid Loess PlateauTriticum aestivum |
| spellingShingle | Yinglong Chen Yinglong Chen Yinglong Chen Yan Fang Yan Fang Yanlei Du Yanlei Du Yanlei Du Jun Wang Aijiao Wu Aijiao Wu Sheng Qiao Bingcheng Xu Bingcheng Xu Suiqi Zhang Suiqi Zhang Kadambot H. M. Siddique Moderate Drought Stress Affected Root Growth and Grain Yield in Old, Modern and Newly Released Cultivars of Winter Wheat Frontiers in Plant Science drought stress root mass root length density semi-arid Loess Plateau Triticum aestivum |
| title | Moderate Drought Stress Affected Root Growth and Grain Yield in Old, Modern and Newly Released Cultivars of Winter Wheat |
| title_full | Moderate Drought Stress Affected Root Growth and Grain Yield in Old, Modern and Newly Released Cultivars of Winter Wheat |
| title_fullStr | Moderate Drought Stress Affected Root Growth and Grain Yield in Old, Modern and Newly Released Cultivars of Winter Wheat |
| title_full_unstemmed | Moderate Drought Stress Affected Root Growth and Grain Yield in Old, Modern and Newly Released Cultivars of Winter Wheat |
| title_short | Moderate Drought Stress Affected Root Growth and Grain Yield in Old, Modern and Newly Released Cultivars of Winter Wheat |
| title_sort | moderate drought stress affected root growth and grain yield in old modern and newly released cultivars of winter wheat |
| topic | drought stress root mass root length density semi-arid Loess Plateau Triticum aestivum |
| url | http://journal.frontiersin.org/article/10.3389/fpls.2017.00672/full |
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