Fig. 6From: Exposure to trace amounts of sulfonylurea herbicide tribenuron-methyl causes male sterility in 17 species or subspecies of cruciferous plantsPollen grains in M. incana and C. bursa-pastoris stained with acetocarmine. The pollen grains of the control are stained deeply; meanwhile, the aborted pollen grains cannot be stained, and the content disappearedBack to article page