Fig. 2From: Exposure to trace amounts of sulfonylurea herbicide tribenuron-methyl causes male sterility in 17 species or subspecies of cruciferous plantsMale sterile flowers in Brassica species induced by 0.2 mg/L of tribenuron-methyl. The control is on the left side, and the tribenuron-methyl treatment is on the right side in each part. a B. capitata, b B. carinata, c B. acephala, d B. juncea, e B. chinensis, and f B. nigra Back to article page