title: [Effects of saline-alkali stress on electrical impedance spectroscopy parameters and ion contents in shoots of Ping'ou hybrid hazelnut].
abstract: To study the adaptability to salt-alkaline stress of Ping'ou hybrid hazelnut, 'Liaozhen 3' shoots which were treated with three types of stress neutral NaCl, alkaline Na2CO3, and mixed salt-alkali, and the changes in electrical impedance spectroscopy (EIS) parameters and mineral ion contents were subsequently determined. The correlations between the EIS parameters and mineral ion contents were analyzed. The results showed that with the increasing level of NaCl, specific high- frequency resistance (r), specific low-frequency resistance ( r(l)), specific intracellular resistance (r(i)) and specific extracellular resistance (r(e)) of shoots decreased firstly, then increased, and finally decreased again. However, these parameters increased gradually with the increasing level of Na2CO3, while r(l) and r(e) decreased slowly in the mixed salt-alkali treatments. The Na+ contents of shoots increased significantly under the three salt-alkali stresses with the order of NaCl stress > mixed salt-alkali stress > Na2CO3 stress. Furthermore, Na2CO3 stress resulted in the decreases in the contents of three elements Zn, B and Ca. The significant negative correlation was found between the sum of five cations and four EIS parameters r(l), r(e), relaxation time (τ) , and distribution coefficient of relaxation time (ψ). The shoots of 'Liaozhen 3' might be tolerant of Na2CO3 stress of 200 mmol · L(-1), while they could be resistant to NaCl stress of 100-150 mmol · L(-1).
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Zhi-Guo
authors.initials: ZG
authors.lastname: Jia
authors.forename: Qing-Hua
authors.initials: QH
authors.lastname: Ma
authors.forename: Gang
authors.initials: G
authors.lastname: Zhang
authors.forename: Gui-Xi
authors.initials: GX
authors.lastname: Wang
mesh_terms: D000468:Alkalies; D031211:Corylus / Q000502:physiology*; D058266:Dielectric Spectroscopy; D006863:Hydrogen-Ion Concentration; D018520:Plant Shoots / Q000737:chemistry*; D054712:Salinity; D012964:Sodium / Q000737:chemistry*; D012965:Sodium Chloride; D013312:Stress, Physiological
chemical_list: D000468:Alkalies; D012965:Sodium Chloride; D012964:Sodium