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Effect of VA-mycorrhizal Fungi on Endogenous Hormone Contents in Vitro Apple Plantlets

Qi Guohui; Xi Rongting(Hebei Agricaltural University, Baoding 071001)  
Pot cultured experiment was conducted to investigate the effect of VA mycorrhizal fungi on endogenous hormone contents in apple shoots and roots. The result showed that in every growing stage, the GA_3 content in shoots and roots of mycorrhizal apple plants was higher than that in non - mycorrhizal plants, ZR and IAA contents in mycorrhizal apple plants sometimes were higher but sometimes were lower than that in the controlled plants.But the content of ABA was always higher in mycorrhizal plants.
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