In different parts of the world, it is verified that green areas provide an improvement in the quality and well-being of the population in the environmental and psychological aspects. In this study, the micronucleus test is performed in Tradescantia pallida (Rose) D.R. Hunt var. purpurea (TRAD-MCN) to detect the mutagenic potential of atmospheric gases in different situations of vehicular flow and urban green areas. Following the protocols for TRAD-MCN, the results obtained confirm the positive correlation between the intensity of vehicle traffic and the frequency of micronuclei. However, in regions with green areas, the results obtained with TRAD-MCN are inferior even with intense vehicular flow. The period of high temperatures and low relative humidity can potentiate the action of stressors on plant species used as a bioindicator. Because of the results found in this study, we can infer that green areas reduce the effects of polluting gases. We emphasize here the importance of preserving or creating parks and reserves in an urban environment to improve air quality and consequently the health of the population.

在世界的不同地方，已证实绿色区域在环境和心理方面改善了人口的质量和福祉。在这项研究中，微核试验是在紫翅花中进行的。（罗斯）DR·亨特 purpurea（TRAD-MCN）可以检测在不同的车辆流量和城市绿地情况下大气气体的诱变潜力。遵循TRAD-MCN的协议，获得的结果证实了车辆通行强度与微核频率之间的正相关。但是，在绿化区域，即使车辆流量很大，使用TRAD-MCN的结果也较差。高温和低相对湿度的时期可以增强应激源对用作生物指示剂的植物物种的作用。由于这项研究的结果，我们可以推断出绿色区域可以减少污染气体的影响。