Studies were undertaken in Department of Pomology and Floriculture, College of Horticulture, Vellanikkara to evaluate Air Pollution Tolerance Index of all the selected species/varieties of Philodendron. The Air Pollution Tolerance Index (APTI) of philodendron species/varieties under the study was computed. Based on this, they were categorized into sensitive, intermediately tolerant, moderately tolerant and tolerant. It was observed that Philodendron ‘Majesty’ and Philodendron serratum had the highest APTI values and were tolerant to air pollution. Philodendron sagittifolium, Philodendron karstenianum, Philodendron x Magnificum, Philodendron wendlandii, Philodendron bipinnatifidum, Philodendron ‘Ceylon Gold’, Philodendron superbum and Philodendron ‘Smithi’ were found to be the most susceptible and they could be recommended as pollution indicator plants.
Philodendron, Air Pollution Tolerance Index (APTI)
