The Influence of Replant Stress on Hormone and Absorption of Root for Different Apple Rootstocks

Abstract:

The differences of growth and root absorption of three apple rootstock seedlings was compared and the absorption of hydrogen ions and endogenous hormone levels under the replant stress was discussed in this study. Experimental results showed that the dry matter of M. sieversii seedlings was significantly decreased under replant stress and the root-shoot ratio was increased. Root biomass of three rootstocks increased observably and the total root length was extended by 1.45 times, 2.22 times, 1.71 times, respectively compared to control. Root activity of three rootstocks all decreased, which one of M. hupehensis fell less than another two rootstocks. The flux direction of H⁺ had no change for M. Hupehensis and M. Hupehensis, which of M. prunifolia changed into outward from inward. The endogenous hormone level of three rootstocks in replant stress was affected. ABA content is higher than that of controls, IAA and ZR contents were lower than controls, GA in M. Hupehensis and M. prunifolia was higher than that of controls besides M. Sieversii. The root amount of three rootstocks increased significantly. The dry matter accumulation, absorption of H⁺ and endogenous hormone levels was affected and the sequence decreasingly was M. Hupehensis, M. prunifolia and M. Sieversii according to the degree of tolerance to replant stress.

• Periodical: Advanced Materials Research (Volumes 1120-1121)
• Pages: 926-931
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.926
• Online since: July 2015
• Authors: Xiao Jing Guo, Rong Wang, Zhen Zhang, Rui Ge, Zhi Quan Mao, Ling Guo, Xiang Shen*
• Keywords: Endogenous Hormone, Replant Stress, Rhizosphere Ion, Root Absorption

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