2011•Xi'nan nongye xuebaoRequires access

Effects of NaCl Stress and Iso-Osmotic PEG Treatment on Osmoticum Accumulation of Buckwheat Seedlings

Hong‐Bing Yang

Abstract

NaCl stress and iso-osmotic PEG treatment all caused the increase of free proline and soluble sugar in buckwheat seedlings with different salt-tolerance,and that of the increase under NaCl stress was obviously more than that under iso-osmotic PEG treatment.It indicated that ion effect played the main role in it.Free proline and soluble sugar content of roots and leaves in salt-tolerant Chuanqiao No.1 increased less and had a low variety rate.Salt-tolerance of buckwheat showed negative correlation with osmoticum accumulation.Abundant osmoticum accumulation in salt-sensitive TQ-0808 might be caused by metabolism disorder under high concentration salt stress and should be a representation of salt damage.

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Key concepts: Proline, PEG ratio, Sugar, Chemistry, Salt (chemistry), Osmoregulation, Osmotic shock, Osmotic pressure