Abstract
Recently, Brassica compestris (B. compestris) L is commonly known as sarson, has become a very important crop for plant oil production. The effect of polycyclic aromatic hydrocarbons (PAHs) under ultraviolet radiations (UVR) on the germination of male gametophyte of B. compestris was studied at different concentrations. The pollen samples were collected from flowering twig of Brassica compestris. Flavonols, an uncolored flavonoid subclass, have a high anti-oxidative effect and are known to have anti-proliferative, antiangiogenic, and neuropharmacological properties. However, no studies on the effects of pollen grain germination of polycyclic aromatic hydrocarbons (PAHs) under UVR. In this study, we found that the higher concentration of PAHs under UVR inhibit or delayed the growth of pollen grain. In vitro shoots correlated with slightly higher ROS scavenging activities. Although the treatment delayed germination, it did not increase the concentration of cellular reactive oxygen species. Thus, our results indicate that inhibition of B. compestris pollen grains germination under exposure of PAHs with UVR is due to oxidative stress.