The Physiological and Biochemical Mechanisms of Ivy (Hederanepalensis var. sinensis) Respond Under Drought Stress

doi:10.11924/j.issn.1000-6850.2012-3791

Abstract

Abstract: Taking different ivy (Hederanepalensis var. sinensis) as test material, the study had been conducted to test physiological and biochemical parameters responding to different degrees of drought stress. The variation of ivy physiological and biochemical parameters under stress conditions were displayed, which would provide a basis theory for germplans resources modification. With the aggravation of drought stress, chlorophyll a, chlorophyll b and carotenoids content of ivy leaves showed an upward trend; REC and MDA showed an upward trend; as far as pore size, it became narrows first and then widen gradually; RWC and WSD went upward and downward, respectively. POD increased under the condition of 10% PEG, however, under the condition of 30% PEG, it showed both increasing and decreasing trend. Among 10 ivy varieties,‘hudieye’and‘baijianciye’showed strong drought resistance than others.

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