Fig. 1

Damage on plants due to tribenuron-methyl exposure. a Chlorotic lesions at the site of contact within the first few days after treatment b Anthocyanidins accumulation in a young branch. c Malformed and male-sterile flowers after exposure to 1.2 mg/L of tribenuron-methyl. Note the lack of anthers and petals. d Magnified malformed and male-sterile flowers with the lack of anthers and petals. e Flowers of Orychophragmus violaceus treated with 0.0, 0.4, 0.8, and 1.2 mg/L of tribenuron-methyl. Higher doses had obvious toxicity to the size of the flower bud