摘要:
通过对不同甲醛浓度处理的密闭容器中甲醛含量、虎尾兰植株体内甲醛含量及其保护酶活性的测定,探讨虎尾兰吸收空气中甲醛的效果,并分析不同甲醛浓度处理后植株体内甲醛含量与保护酶活性的差异性。结果表明:虎尾兰吸收甲醛量随着甲醛处理浓度的提高而增加,当甲醛处理浓度为0.347mgm-3、0.431 mgm-3、0.543mgm-3、0.672mgm-3、0.884mgm-3,虎尾兰吸收甲醛量分别占容器中甲醛总量的14.98%、20.64%、30.76%、39.43%、45.14%;不同处理虎尾兰植株体内甲醛含量差异不显著,且其含量随着处理时间呈波动性变化态势;各处理的虎尾兰植株体内保护酶(POD、SOD和CAT)活性差异不显著。由此
推断,虎尾兰吸收的甲醛没有在植株体内积累,甲醛处理对虎尾兰植株影响不显著。
Abstract:
Reaction of Sansevieria trifasciata plant to formaldehyde pollution in a closed container was studied.Various formaldehyde concentrations were applied and the corresponding protective enzyme activities in the S.trifasciata plant determined.The results showed that at formaldehyde concentration of 0.347 mgm-3,0.431 mgm-3,0.543 mgm-3,0.672 mgm-3 and 0.884 mgm-3,the absorption rates of formaldehyde by the plant was 14.98%,20.64%,30.76%,39.43% and 45.14%,respectively.No significant correlation between the formaldehyde concentration in the container and that in the plant were found.On the other hand,the formaldehyde content in the plant varied with treatment time.The protective enzyme(i.e.,POD,SOD and CAT) activities in the plant showed no significant difference,when the formaldehyde concentration was varied.The results suggested that the formaldehyde absorbed by S.trifasciata did not accumulate in the plant,leaving no significant residual effects on it.
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