India, Dec. 13 -- A Delhi University (DU) study has found that the Capital's toxic air could be detrimental to plant life, reducing chlorophyll levels that are directly proportional to the amount of oxygen produced by a tree.

Researchers at DU's Acharya Narendra Dev College examined ten species of trees that are widely found in the city. These include 'Bael' (Aegle marmelos), 'Saptparni' (Alstonia scholaris), 'Neem' (Azadirachta indica), 'Amaltas' (Cassia fistula), 'Bargad' (Ficus benghalensis), 'Pipal' (Ficus religiosa), 'Pilkhan' (Ficus virens), 'Mango' (Mangifera indica), 'Champa' (Plumeria alba) and 'Jamun' (Syzygium cumini).

The study, titled 'Seasonal variation of biochemical and morphological traits of selected tree species in po...