EFFECT OF AIR-POLLUTION ON SOME BUND TREES OF THE AGRICULTURAL LANDS

Streblus asper, Capparis spinosa and Zizyphus jujuba, were more preval ent on the agricultural lands that were exposed to mixed air pollutant s from the Gujarat state fertilizer corporation (GSFC). Dimorphic leav es were common in S. asper. The leaves facing the emission source were smaller than those on the opposite side. The leaves also absorbed mor e sulphur, synthesizing more glutathione and amino acid, and maintaini ng a higher levels of sugars, phenols and ascorbic acid. Probably thes e characteristics along with the production of dimorphic leaves made t he survival of this species possible under chronic low levels of air p ollutants.