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Nitrogen Addition Mitigates Drought by Promoting Soybean (Glycine Max (Linn.) Merr) Flowering and Podding and Affecting Related Enzyme Activities

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  • Mengjiao Li

    (College of Agriculture, Shihezi University, Shihezi 832003, China
    The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi 832003, China)

  • Kangxu Zhang

    (College of Agriculture, Shihezi University, Shihezi 832003, China
    The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi 832003, China)

  • Jianguo Liu

    (College of Agriculture, Shihezi University, Shihezi 832003, China
    The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi 832003, China)

  • Ghulam Nizam ul Din

    (College of Agriculture, Shihezi University, Shihezi 832003, China
    The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi 832003, China)

Abstract

Drought at the flower and pod stage, which is the most moisture-sensitive stage of soybean development, is the main cause of yield loss in soybean. Nitrogen is a vital nutrient for soybeans. The objective of this study was to assess the potential of post-drought nitrogen fertilization at the soybean (Heihe 45) pod stage to (1) reduce pod shedding and increase yield, and (2) elucidate the mechanisms by which nitrogen fertilization regulates soybean growth under drought stress. The pot experiment was designed with two moisture levels and three nitrogen levels, resulting in a total of six treatments. The results show that nitrogen reduces cellular oxidation by regulating key enzymes of sucrose metabolism, such as sucrose synthase and sucrose phosphate synthase; and regulates cellulase to reduce shedding and mitigate drought. Comparison of low and high nitrogen conditions under drought conditions showed that the number of flowers and pods in soybean increased by 30% and 32.94%, respectively, malondialdehyde content decreased by 24%, cellulase activity in flowers and pods decreased by 15.07% and 12.31%, respectively, and yields increased by 29.98% under high nitrogen conditions. The high nitrogen treatment performed optimally and the differences between treatments reached the significant level.

Suggested Citation

  • Mengjiao Li & Kangxu Zhang & Jianguo Liu & Ghulam Nizam ul Din, 2024. "Nitrogen Addition Mitigates Drought by Promoting Soybean (Glycine Max (Linn.) Merr) Flowering and Podding and Affecting Related Enzyme Activities," Agriculture, MDPI, vol. 14(6), pages 1-13, May.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:6:p:852-:d:1404466
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    References listed on IDEAS

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    1. Temesgen Assefa Gelaw & Kavita Goswami & Neeti Sanan-Mishra, 2023. "Individual and Interactive Effects of Nitrogen and Phosphorus on Drought Stress Response and Recovery in Maize Seedlings," Agriculture, MDPI, vol. 13(3), pages 1-33, March.
    2. Agami, Ramadan A. & Alamri, Saad A.M. & Abd El-Mageed, T.A. & Abousekken, M.S.M. & Hashem, Mohamed, 2018. "Role of exogenous nitrogen supply in alleviating the deficit irrigation stress in wheat plants," Agricultural Water Management, Elsevier, vol. 210(C), pages 261-270.
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