|Table of Contents|

Evaluation of Heat Resistance and Cold Resistance of Grandiflora Roses by Bioelectrical Impedance Technology(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年22
Page:
75-81
Research Field:
Publishing date:

Info

Title:
Evaluation of Heat Resistance and Cold Resistance of Grandiflora Roses by Bioelectrical Impedance Technology
Author(s):
CUI Ruihang; FAN Shaoran; JIAO Meiling; ZHANG Gang
(College of Horticulture，Agricultural University of Hebei，Baoding，Hebei 071000)
Keywords:
grandiflora roses; temperature stress; electrical impedance; semi-lethal temperature
PACS:
-
DOI:
10.11937/bfyy.201622020
Abstract:
The one-year-old shoots in two-year-old grandiflora roses ‘Magia Nera’ ‘Gold Medal’‘Maria Callas’ were used as materials.The heat resistance of stems from April to August and the cold resistance of stems from September to the next January were measured by the method of electrical impedance spectroscopy (EIS).And the changes of EIS parameters in high temperature and low temperature stresses were studied in detail.The aims of the present study were to determine the response of EIS parameters to temperature stress，and to obtain the best EIS parameters for estimating the semi-lethal temperatures without temperature test.The results showed that under high temperature stress test，the changes of extracellular resistance re and relaxation time τ could be well fitted by Logistic equation；and under low temperature stress test，re could be well fitted by Logistic equation.For the samples without temperature test，the best EIS parameters to estimate the semi-lethal of high temperature stress were intracellular resistance ri (r=0.795)，ri (r=0.809) and τ (r=-0.858) for ‘Magia Nera’‘Gold Medal’ and ‘Maria Callas’ respectively.The best EIS parameters to estimate the semi-lethal of low temperature stress were relaxation time distribution coefficient of ψ (r=0.967)，re (r=-0.873) and ψ (r=0.922) for ‘Magia Nera’‘Gold Medal’ and ‘Maria Callas’ respectively.

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Last Update: 2017-01-06