Effects of Cd2+ Stress on Growth, Antioxidant Enzyme Activity and Cadmium Enrichment of Cucumber Seedings
Cao Yaru
Sun Kaining
Wang Kean
Li Xuhua
Yang Ning
Cao Qiwei
Abstract：Using 5 cucumber varieties (North China Ⅰ,North China Ⅱ,Southern China,Europe and the United States in greenhouse,Europe and the United States processing) as materials,the effects of different concentrations of cadmium (0,5,10,50,100,300 μmol/L) stress on growth,antioxidant enzyme activity and cadmium enrichment of cucumber seedings were studied under hydroponic condition.The results showed that the cucumber plant height decreased with the increase of cadmium concentration,and the Southern China were all higher than the other four types in the same concentration of cadmium.The root volume showed a gradual increasing trend in the cadmium concentration range of 0 ～50 μmol/L,and the root growth was inhibited in the 100 μmol/L and 300 μmoL/L cadmium concentration.The SOD,POD,CAT activity of cucumber seedings increased at first and then decreased with the increase of Cd concentration.The whole Cd enrichment of aboveground plant was higher than the root when the cadmium concentration was below 50 μmol/L,while it showed a reverse trend in 100,300 μmol/L.The Cd enrichment of aboveground part of Europe and the United States processing and North China Ⅰ were significantly lower than other treatments under the high cadmium concentration (300 μmol/L) condition and showed better low-Cd accumulation ability.The study provided data supports for screening out cucumber varieties with low concentration of cadmium.
Keywords：Cadmium stressCucumber seedingAntioxidant enzyme activityCadmium enrichment
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 107-113 )