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Study On Selecting Salt-resistant Plants And Their Physiological Responses And Salt-tolerance Under Different Salt Stress

Posted on:2016-06-28Degree:MasterType:Thesis
Country:ChinaCandidate:S Y LiFull Text:PDF
GTID:2180330461460156Subject:Agricultural Biological Environmental and Energy Engineering
Abstract/Summary:PDF Full Text Request
In this paper,11 salt tolerant plants which are regularly used as landscape greening plants in Tianjin China-Singapore Ecological City were taken as the study object. We studied the change on growth of plants under different salt stress, recording their survival rate and biomass and detected the relative conductivity, the MDA content and the soluble sugar content of the plants. By using range method, we evaluated the experimental plants and the screening result is Amorpha fruticosa had the strongest salt tolerance, followed by Acorus calamus and Albizzia julibrissin, the next are Hibiscus、 Lonicera maackii、Lycium barbarum、Liriope、Iris、Festuca arundinacea. and Boston ivy, which salt resistance were decreased, the Bermuda grass is the worst among the plants. The biomass and the survival of the 11 plants in treatment groups were lower than that of the control group, and with the increasing of concentration,the water content of plants was also decreased, showing that the salt had significantly damaged the plants and made them absorbing water more difficult. The change on the relative conductivity, the MDA content and the soluble sugar content in plant leaves showed that plants using self-regulatory mechanism to resist the stress of slat. Through analysis, the optimum salt-tolerance plants selected by this study could be effectively applied for greening in Tianjin coastal area, and can be reasonably formed as ecological-greening combination, which can save the greening cost and obtain the perfect effect of greening landscape, making high comprehensive benefits.
Keywords/Search Tags:salt-resistance plants, salt stress, salt tolerance
PDF Full Text Request
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