Effects of manganese toxicity on the growth of soybean (Glycine max L.) at the seedling stage

Authors

  • Ying Liu South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center Zhanjiang, Guangdong, 524088, China
  • Jing Ye Chen South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center Zhanjiang, Guangdong, 524088, China
  • Xiao Hao Li South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center Zhanjiang, Guangdong, 524088, China
  • Shao Xia Yang Department of Biotechnology, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
  • Han Qiao Hu South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center Zhanjiang, Guangdong, 524088, China
  • Ying Bin Xue South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center Zhanjiang, Guangdong, 524088, China

DOI:

https://doi.org/10.3329/bjb.v50i5.56431

Keywords:

Soybean, Manganese toxicity, Iron, Magnesium

Abstract

Effects of manganese (Mn) toxicity stress on the growth of soybean, the number of Mn spots on leaves and the absorption of iron and magnesium were studied by nutrient solution hydroponics. The results showed that the presence of Mn spots on leaves was the main symptom of Mn toxicity in soybean. When the concentration of exogenous Mn was 25 μmol/l, the leaf generated obvious Mn oxidation spots; when the concentration of exogenous Mn exceeded 50 μmol/l, the growth of soybean was inhibited, and the number of Mn spots increased significantly. With the increase in exogenous Mn concentration, the Mn concentration in the roots, young leaves and old leaves of soybean increased significantly. When the concentration of exogenous Mn reached 200 μmol/l, the number of Mn spots on primary leaves, old leaves and young leaves increased significantly. Although the iron concentration in the roots remained the same, the iron content in the old and young leaves decreased significantly. On the other hand, although Mn toxicity significantly reduced the concentration of magnesium in soybean roots, it increased the concentration of magnesium in old and young leaves.

Bangladesh J. Bot. 50(3): 803-811, 2021 (September) Special

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Published

2021-11-18

How to Cite

Liu, Y. ., Chen, J. Y. ., Li, X. H. ., Yang, S. X. ., Hu, H. Q., & Xue, Y. B. . (2021). Effects of manganese toxicity on the growth of soybean (Glycine max L.) at the seedling stage. Bangladesh Journal of Botany, 50(5), 803–811. https://doi.org/10.3329/bjb.v50i5.56431

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