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    Effects of Root Cutting on Morphological Characteristics and Endogenous Hormone Levels of Quercus variabilis Seedlings

    Ruoyi Ni#, Hao Dou#, Shuwen Bi, Tiantian Wang, Jin’e Quan*, Xitian Yang*

    Phyton-International Journal of Experimental Botany, Vol.92, No.10, pp. 2907-2920, 2023, DOI:10.32604/phyton.2023.030689

    Abstract The objective of this study was to investigate the effects of root cutting stress on the dynamic changes of endogenous hormone content and growth characteristics of Quercus variabilis roots, and to explore the physiological role of endogenous hormones in regulating root-crown interactions in the short term. The morphological characteristics and endogenous hormone contents of normal roots (no root cutting, CK) and cut roots (cut by 1/3 of the length of the main root, RP) were determined by liquid chromatography, which was combined with mass spectrometry at different levels of different developmental stages. The results showed that the root growth indexes… More >

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