Effects of 3,4-benzopyrene on the growth and development of the sunflower (Airelle variety) in experimental culture. II) Seed production

Plants of sunflower cultivated in soil enriched in 3,4 benzopyrene produces seeds which are smaller than those obtained from untreated plants. The same effect has been observed if the leaves are sprinkled with BP. The smallest seeds are produced from plants submitted to soil and leaves treatment.