Morpho-anatomical and physiological characteristics responses of a paried near-isogenic lines of waxy corn to waterlogging

  • Ji Wang
  • Xiangling Lv
  • Hongwei Wang
  • Xuemei Zhong
  • Zhensheng Shi
  • Min Zhu
  • Fenghai Li Department of Agronomy, Specialty Corn Institute, Shenyang Agricultural University, 110866 Shenyang, Liaoning Province, China

Abstract

Waterlogging stress is one of the most natural stress, which due to excessive rainfall or low-lying terrain, and limits crop growth and yield. Our objective was to study the morpho-anatomical and physiological characteristics of a paired near-isogenic lines of waxy corn under waterlogging stress. This experiment was implemented in pots with a paired of near-isogenic lines differing in waterlogging tolerance: Zz-R (waterlogging-resistant) and Zz-S (waterlogging-sensitive). Root morphology features, anaerobic respiratory enzyme activity, and tissue anatomical characteristics were measured at 0, 2, 4, 6 and 8d in the control and waterlogging conditions. The result indicated that waterlogging induced a decrease in the root length, volume and surface areas of the two waxy corn inbred lines, the total root length, root volume, and root surface area of the Zz-R showed less reduction than the Zz-S. Waterlogging stress influenced significantly by the parenchyma cells in cortex of root between Zz-R and Zz-S. Zz-R can also maintain a higher level of anaerobic respiratory enzyme activity under waterlogging stress. The different reaction between the paired near-isogenic lines may be responsible for higher tolerance of Zz-R than Zz-S. These results can provide a certain theoretical basis of the resistance evaluation and breeding to the resistant varieties.

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How to Cite
Wang, J., X. Lv, H. Wang, X. Zhong, Z. Shi, M. Zhu, and F. Li. “Morpho-Anatomical and Physiological Characteristics Responses of a Paried Near-Isogenic Lines of Waxy Corn to Waterlogging”. Emirates Journal of Food and Agriculture, Vol. 31, no. 12, Jan. 2020, pp. 951-7, doi:https://doi.org/10.9755/ejfa.2019.v31.i12.2045. Accessed 7 Apr. 2020.
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Research Article