The Relationship Between Parameters of Electrical Impedance Spectroscopyand Some Physiological Parameters in Pinus bungeana Zucc. Needles DuringDehardening

ACTA HORTICULTURAE SINICA ›› 2009, Vol. 36 ›› Issue (6): 891-897.

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The Relationship Between Parameters of Electrical Impedance Spectroscopyand Some Physiological Parameters in Pinus bungeana Zucc. Needles DuringDehardening

DONG Sheng-hao¹, ZHANG Gang¹*, QUE Shu-peng², ZHU Liang², and JIN Xiu-mei²

(¹College of Horticulture, AgriculturalUniversity of Hebei, Baoding, Hebei 071001, China;²The Nursery in Beijing Ming Tombs Forestry Center, Beijing 102200, China)

Received:2008-10-08 Revised:2009-05-18 Online:2009-06-25 Published:2009-06-25
Contact: ZHANG Gang

Abstract

Abstract: From March to May 2007, the electrical impedance spectroscopy ( EIS) was analyzed on one-year-old needles of Pinus bungeana Zucc. in a 9-year provenance field trial at the Nursery in Beijing MingTombs Forestry Center with provenances of Mangshan in Beijing, Xiaoyi in Shanxi and Liangdang in Gansu.
The activities of superoxide dismutase ( SOD ) and peroxidase ( POD ) , the contents of malondialdehyde(MDA) , soluble proteins and proline, and dry weight percentage in needleswere tested with different provenances. The relations between parameters of the EIS and tested physiological parameters were analyzed. The results indicated that (1) during dehardening, EIS parameters β and specific extracellular resistance r_ein nonfrost-exposed needles correlated negatively with the content of proline; and there was a positive relation between the membrane time constant τ_mand the content of soluble protein; (2) Similar changing patterns were found between the specific intracellular resistance r_iand the content of MDA; Between the τ_mand the percentage of dry weight, and between r_e , β and soluble proteins in the early stage of dehardening; (3) The frost hardiness assessed by r_e and τ_m after artificial freezing treatment correlated to the content of proline.

Key words: Pinus bungeana Zucc., dehardening, physiological parameter, electrical impedance spectroscopy

CLC Number:

DONG Sheng-hao;ZHANG Gang;QUE Shu-peng;ZHU Liang;and JIN Xiu-mei. The Relationship Between Parameters of Electrical Impedance Spectroscopyand Some Physiological Parameters in Pinus bungeana Zucc. Needles DuringDehardening[J]. ACTA HORTICULTURAE SINICA, 2009, 36(6): 891-897.

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The Relationship Between Parameters of Electrical Impedance Spectroscopyand Some Physiological Parameters in Pinus bungeana Zucc. Needles DuringDehardening

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