土壤Cd污染对甘蓝光学显微成像特征的影响

在不同浓度CdNO_3的土壤中栽培甘蓝,应用光学相干层析成像系统(OCT)对甘蓝不同生长时期的叶片进行检测。结果显示:土壤中Cd含量较低时OCT值有降低的趋势,表明Cd对甘蓝植物的种子萌友与生长有一定的促进作用;而Cd浓度高于100mg/kg时,OCT值持续升高,表明Cd对甘蓝植物的种子萌发与生长均起到强烈的抑制作用,并且后期的累积作用对甘蓝叶片组织造成一定的损害。

Effects of Cd pollution in soils on the characteristics of optical microscopic imaging of cabbage

Cabbage was cultivated in soils with different concentrations of cadmium nitrate.The leaves of the cabbage in different growth periods were tested by optical coherence tomography (OCT).The results show that:when the Cd concentration in soils is low the OCT values tend to decrease,indicating that Cd can promote the sprouting and growth of seeds of cabbage to some extent;by contrast,when the Cd concentration is higher than 100 mg/kg,the OCT values rise steadily,indicating that Cd exerts a strong in- hibiting effect on the sprouting and growth of seeds of cabbage,and in the late stage Cd causes certain damage to the tissue of cabbage leaves because of its accumulation.