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Bulletin of Botanical Research ›› 2017, Vol. 37 ›› Issue (5): 658-663.doi: 10.7525/j.issn.1673-5102.2017.05.004

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Phenotypic Plasticity and Respond of Juglans mandshurica Seedling under Different Light Environments

ZHANG Dong-Lai1, ZHANG Ling2, GE Wen-Zhi2   

  1. 1. Heilongjiang Academy of Forestry, Harbin 150081;
    2. Forestry Research Institute of Heilongjiang Province, Harbin 150081
  • Received:2017-05-12 Online:2017-09-15 Published:2017-09-15
  • Supported by:
    This study was fully supported by the National Natural Science Foundation of Helongjiang Province(C201318)

Abstract: We studied the growth of the seedling, morphological characteristics, biomass allocation and water feature of Juglans mandshurica seedling under different light environments(100%, 60%, 30% light). The architectural model was modified plastically in response to different light conditions, the biomass allocation and water feature has some differences. Under low light conditions, J.mandshurica seedling growth fast, plant height, ground diameter were 1.14 times and 1.18 times. The canopy was big, which were 1.4 times. Leaf is broad, leaf length and leaf width were 1.25 and 1.36 times and branch number less than total light. The biomass of above ground uner three kinds of light environment was with significant differences, but underground part of the difference is not significant. Leaf relative water content was increased with the decrease of light gradually trend, which were under the condition of blade was bigger than the saturated water capacity and leaf dry fresh under shade conditions. There was significant difference in chlorophyll content under three light conditions. J.mandshurica adapted to different light environment in morphology and physiology, and the appropriate shade treatment was beneficial to the growth of J.mandshurica seedling.

Key words: Juglans mandshurica, light environment, phenotypic plasticity, respond

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