The electrical conductivity of different Eucalyptus dunnii plus trees was determined at normal temperature and under different low temperature stress, to discuss the relation between the change of electrical conductivity and the individual cold-resistance in different treatments. The results indicated that the electrical conductivity of different individuals existed diurnal fluctuation at normal temperature, which did not contact directly with the individual cold-resistance. The electrical conductivity of different plus trees varied with the differences of cold-resistance under different low temperature stress, the cold-resistance stronger, the low-temperature interval that the electrical conductivity changed gradually more hysteretic, and the range of variation smaller. According to the electrical conductivity in different treatments, the logistic equations and self-lethal temperature of different individuals were respectively gained by regression analysis, to quantitatively assess the cold-resistances of different individual, which would provide the scientific basis for selecting plus trees of the rapid-growth and cold-resistance.
GUO Xiang-quan
,
WU Qi-zhi
,
HONG Wei
,
GUO Xiang-dui
. Study on Cold-resistance of Different Eucalyptus dunnii Plus Trees Using Electrical Conductivity[J]. Subtropical Plant Science, 2012
, 41(01)
: 41
-44
.
DOI: 10.3969/j.issn.1009-7791.2012.01.010
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