Scientia Agricultura Sinica ›› 2007, Vol. 40 ›› Issue (3): 492-498 .

• TILLAGE & CULTIVATION·PHYSIOLOGY & ECOLOGY • Previous Articles     Next Articles

Effect of phloridzin on physiology of M hupehensis seedlings

Jianghong Zhang   

  1. 河北农业大学园艺学院
  • Received:2005-11-28 Revised:2006-09-12 Online:2007-03-10 Published:2007-03-10

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Abstract: Abstract: M hupehensis seedlings growing in sand were treated with 0.001, 0.1, 1, 10 mmol L-1 of Phloridzin every fourth day for three times. Effect on plant morphology and physiology characteristic was investigated. The results showed that phloridzin improved seedlings growth at 0.001mmol L-1 and inhibited the growth of seedlings at 1mmol L-1.Inhibition rate of phloridzin on seedlings enhanced with higher concentration. At 1mmol L-1 , deformation of the ultrastructures of chloroplast，mitochondrion in leaf and root was observed accompanying with increased MDA content and SOD activity. Activities of POD and CAT increased firstly, then decreased, and then increased again. Photosynthesis rate and respiratory rate of M hupehensis seedlings were reduced at higher concentration of phloridzin.

Key words: Phloridzin, M hupehensis, Ultrastructures, Protective enzyme, MDA, Photosynthesis

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