Author(s):
1. Tanja Maksimović, Prirodno-matematički fakultet Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Nina Janjić, Prirodno-matematički fakultet Banja Luka, Republic of Srpska, Bosnia and Herzegovina

Abstract:
Air pollution is one of anthropogenically induced stress factors with bad impact on plants. There are a different reactions of plants on environmental conditions and the most common changes are related to functioning of stoma and photosyinthetic apparatus. In this paper it was researched an impact of some pollutants on content of photosynthetic pigments and the number and size of stoma cells at Tilia cordata and Tilia platyphyllos on four localities in Banja Luka city (Borik, Obilićevo, Lazarevo and Paprikovac). Obtained results showed that number and size of stoma cells were higher on average at Tilia platyphyllos compared to Tilia cordata, on leaves sampled from the outer part of the crown compared to the inner part. Differences in the concentration of pollutants influenced differently to content of photosynthetic pigments during the season. On average the higher content of total chlorophyll was found in samples taken in September at the locality of Borik, and the total chlorophyll content was on average higher in Tillia cordata compared to Tilia platyphyllos. The results show that changes in the number and size of stoma cells and in content of an photosynthetic pigments may be used as indicator of resistance of selected plants species to the air pollution.

Key words:
stoma, photosyinthetic pigments, Tilia cordata, Tilia platyphyllos, air pollution

Thematic field:
Forest ecology and conservation of natural resources

Date of abstract submission:
22.06.2017.

Conference:
Šumarska nauka u funkciji održivog razvoja šumarstva
25 godina šumarstva Republike Srpske