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Alleviating Effects of 1-Naphthalene Acid and Indole-3-Butyric Acid Potassium Salt on Low Temperature Stress at Soybean Seedling Stage
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Hao Yang1, 2, Wenwen Gu1, 2, Shumei Fang2, 3, Haipeng Jiang1, 2, Xilong Liang1, 2, Qingyan Wang1, 2
Crops | 2026, 42(2) : 180 - 187
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Crops | 2026, 42(2): 180-187
Alleviating Effects of 1-Naphthalene Acid and Indole-3-Butyric Acid Potassium Salt on Low Temperature Stress at Soybean Seedling Stage
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Hao Yang1, 2, Wenwen Gu1, 2, Shumei Fang2, 3, Haipeng Jiang1, 2, Xilong Liang1, 2, Qingyan Wang1, 2
Affiliations
  • 1College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
  • 2Engineering Research Center of Plant Growth Regulator of Heilongjiang Province, Daqing 163319, Heilongjiang, China
  • 3College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
Published: 2026-04-15 doi: 10.16035/j.issn.1001-7283.2026.02.022
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To clarify the alleviating effect of auxin regulators on low-temperature stress at seedlings stage of soybean, the variety Kennong 18 was used as the test material, and seed coating with sodium naphthaleneacetic acid (NAA-Na), potassium indolebutyrate (IBA-K), and their mixture were adopted as the treatment. From the perspectives of morphological phenotype, antioxidant defense and osmotic regulation, the alleviating effect of NAA-Na and IBA-K on the growth and yield of soybean under low temperature stress was investigated. The results showed that the coating treatment with NAA-Na and IBA-K could reduce the accumulation of reactive oxygen species and the production rate of superoxide anion (O2-. ), and significantly decrease the accumulation of hydrogen peroxide (H2O2) and malondialdehyde. The osmotic regulation ability of soybean seedlings was enhanced, and the contents of soluble sugar, soluble protein, and proline increased. The activities of antioxidant enzymes such as superoxide dismutase, peroxidase, and catalase were enhanced, and the ascorbic acid-glutathione (AsA-GSH) cycle was promoted, thereby alleviating the damage of low-temperature stress to soybean seedlings. The dry matter accumulation in the aboveground and root parts of soybean seedlings increased. The adverse effects of low temperature stress on soybean yield were mitigated, and the number of pods per plant, the number of seeds per plant, 100-seed weight, and the seed weight per plant were significantly increased.

Soybean  /  Cold stress  /  Auxin regulators  /  Active oxygen  /  Chemical control technology
Hao Yang, Wenwen Gu, Shumei Fang, Haipeng Jiang, Xilong Liang, Qingyan Wang. Alleviating Effects of 1-Naphthalene Acid and Indole-3-Butyric Acid Potassium Salt on Low Temperature Stress at Soybean Seedling Stage[J]. Crops, 2026 , 42 (2) : 180 -187 . DOI: 10.16035/j.issn.1001-7283.2026.02.022
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Year 2026 volume 42 Issue 2
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Article Info
doi: 10.16035/j.issn.1001-7283.2026.02.022
  • Receive Date：2025-01-16
  • Online Date：2026-04-30
  • Published：2026-04-15
Article Data
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  • Received：2025-01-16
  • Revised：2025-04-18
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Affiliations
    1College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
    2Engineering Research Center of Plant Growth Regulator of Heilongjiang Province, Daqing 163319, Heilongjiang, China
    3College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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