title: Impact of air pollution on floral morphology of Cassia siamea Lamk.
abstract: Cassia siamea plants growing at two different sites (polluted and non-polluted) on two important roads of Agra city exhibited significant differences in their flowering phenology and floral morphology. The flowering in plants growing at polluted site is delayed and there was a marked reduction in flowering density, flowering period, size of floral parts, pollen fertility, fruit and seed-set. SEM observations revealed the presence of well developed glandular structures and reduction in the number and size of large stomata on the anther surface at polluted site. These changes were found to be closely associated with the extent of air pollution caused mainly by significant in the number of automobiles.
authors.affiliation: Department of Botany, School of Life Sciences, Dr BR Ambedkar University, Agra-282 002, India. svsc@sancharnet.in
authors.forename: S V S
authors.initials: SV
authors.lastname: Chauhan
authors.forename: Bharati
authors.initials: B
authors.lastname: Chaurasia
authors.forename: Anita
authors.initials: A
authors.lastname: Rana
mesh_terms: D000393:Air Pollutants / Q000633:toxicity*; D001824:Body Constitution / Q000187:drug effects / Q000502:physiology; D002366:Cassia; D005298:Fertility / Q000187:drug effects / Q000502:physiology; D035264:Flowers / Q000033:anatomy & histology / Q000187:drug effects*; D005638:Fruit / Q000187:drug effects / Q000254:growth & development; D011058:Pollen / Q000187:drug effects / Q000254:growth & development; D012639:Seeds / Q000187:drug effects / Q000254:growth & development; D001335:Vehicle Emissions / Q000633:toxicity
chemical_list: D000393:Air Pollutants; D001335:Vehicle Emissions