Drought priming during the vegetative stage can enhance post-anthesis drought tolerance by improving photosynthetic capacity in winter wheat
| Autor: | Zhongwei Tian, Ruixiang Liu, Yuhang Shao, Dong Jiang, Jianhua Yuan, Yakun Cui, Tingbo Dai, Jinling Hu |
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| Rok vydání: | 2019 |
| Předmět: |
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fungi Drought tolerance Winter wheat food and beverages Soil Science 04 agricultural and veterinary sciences Priming (agriculture) 010501 environmental sciences Biology Photosynthesis 01 natural sciences Photosynthetic capacity Adaptability Field capacity Anthesis Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries 0105 earth and related environmental sciences media_common |
| Zdroj: | Arid Land Research and Management. 33:183-199 |
| ISSN: | 1532-4990 1532-4982 |
| Popis: | Drought stress during the reproductive period of cereal crops leads to significant yield reductions, therefore, exploring effective methods to improve tolerance to post-anthesis drought is necessary. Pot experiment was carried out to investigate the effects of pre-drought priming on physiological characteristics and grain yield with drought stress at post-anthesis. Moderate water deficits (60–65% of the field capacity) were imposed to prime wheat plants during either the tillering or jointing stages, while severe drought stress (40–45% of the field capacity) was applied during the grain filling stage. The priming treatments significantly improved grain yield resulting in higher biomass. Compared to the control, the grain yield and biomass of the non-priming, tillering priming, and jointing priming treatments were reduced by 15.7, 9.1, and 9.3% and by 11.1, 6.1, and 10.5%, respectively. The primed plants exhibited higher adaptability to subsequent severe drought stress during grain filling, showing... |
| Databáze: | OpenAIRE |
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