Cereal Research Communications

, Volume 45, Issue 2, pp 346–354 | Cite as

Effect of Shading on Biomass and N Mass Partitioning in Paddy Rice Seedlings through Allometric Analysis

  • F. Zhang
  • J. Li
  • X. L. Wang
  • W. Mao
  • H. Zhang
  • J. Guo
  • J. W. LiEmail author
Open Access


An allometric analysis of biomass and N mass allocation of rice (Oryza sativa L.) seedlings under non-shaded (100% of full sunlight) and shaded (30% of full sunlight) treatments were conducted. The allometric slopes and the intercepts were estimated using standardized major axis regression. Results indicated that biomass was preferentially allocated to stems during plant ontogeny, and leaves and roots were isometric when rice seedlings were not shaded. Under shade, however, more biomass was allocated to leaves and stems. N mass allocation was also altered by shading in that more N mass was allocated to the aerial shoots, and plants accumulated less N mass when shaded. Our study revealed that both biomass and N mass were in accordance with the optimal partitioning theory.


optimal partitioning theory ontogeny paddy rice standardized major axis regression 


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© Akadémiai Kiadó, Budapest 2017

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • F. Zhang
    • 1
  • J. Li
    • 1
  • X. L. Wang
    • 1
  • W. Mao
    • 1
  • H. Zhang
    • 1
  • J. Guo
    • 2
  • J. W. Li
    • 3
    Email author
  1. 1.Xinjiang Vocation & Technology College of CommunicationsUrumuqiChina
  2. 2.Xinjiang Academy of ForestryUrumuqiChina
  3. 3.Shanghai Academy of Environmental SciencesShanghaiChina

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