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Ammonium enhances the tolerance of rice seedlings (Oryza sativa L.) to drought condition

Author

Listed:
  • Li, Yong
  • Gao, Yingxu
  • Ding, Lei
  • Shen, Qirong
  • Guo, Shiwei

Abstract

In order to study the effects of different nitrogen (N) forms on drought tolerance of rice seedlings, both hydroponic and pot experiments were conducted in green house. In hydroponic experiments, water stress was simulated by treatment with polyethylene glycol (PEG, 10% in w/v, MW6000); in pot experiments, rice seedlings were cultivated under non-flooded conditions. The results showed that: (1) under water stress conditions, the decrease in plant growth and photosynthesis under ammonium supply was less than under nitrate supply; (2) under non-flooded cultivation, the biomass and photosynthesis in rice plants supplied with ammonium and ammonium+dicyandiamide (DCD, a nitrification inhibitor) were higher than those in nitrate fertilization; (3) in hydroponic experiments, water uptake of rice seedlings under ammonium nutrition was higher than under nitrate nutrition. It is concluded that, ammonium nutrition can enhance the tolerance of rice plants to water stress.

Suggested Citation

  • Li, Yong & Gao, Yingxu & Ding, Lei & Shen, Qirong & Guo, Shiwei, 2009. "Ammonium enhances the tolerance of rice seedlings (Oryza sativa L.) to drought condition," Agricultural Water Management, Elsevier, vol. 96(12), pages 1746-1750, December.
    • Handle: RePEc:eee:agiwat:v:96:y:2009:i:12:p:1746-1750
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    Cited by:

    1. Shenghai Cheng & Aibin He & Xiayu Guo & Rongyi Li & Jianbo Wang & Yucheng Qi & Pengfei Zhang & Weixu Tao & Junchao Ji & Tingcheng Zhao & Yusheng Li & Zhiyong Ai, 2024. "Rational Utilization of Sediment Resources Improves Rice Yield and Nitrogen Use Efficiency under Salt Stress," Agriculture, MDPI, vol. 14(2), pages 1-15, February.
    2. A. Nasraoui-Hajaji & H. Gouia, 2014. "Photosynthesis sensitivity to NH4+-N change with nitrogen fertilizer type," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 60(6), pages 274-279.

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