46 KB198 KB24 KB200020242010Bytyqi, ArsimSherifi, Enverletnik:44številka:5str. 277-282ISSN:1580-2949COBISSID:829354URN:URN:NBN:SI:doc-AENZ0LJPenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijekadmijlucernaMedicago sativa L.svinectežke kovineCadmium and lead accumulation in alfalfa (Medicago sativa L.) and their influence on the number of stomata| Akumulacija kadmija in svinca v rastlini lucerna (Medicago sativa L.) in njun vpliv na število listnih por|Accurate measurements of the heavy-metal contents in polluted areas are required to assess the potential ecological risks in these areas. Chemical and biological indicators are of interest when they provide information about the concentration and accumulation of heavy metals in the environment. This study was conducted in order to investigate heavy-metal accumulation and the effect on alfalfa (Medicago sativa L.) at different distances from the road. The total content of heavy metals was determined using atomic absorption spectrophotometry. The present results showed a variation that indicated that Pb and Cd had the highest concentration in all the sampling areas near the road. According to the results of the present study, the concentration of heavy metals has an influence on the number of stomata in both the adaxial and abaxial surfaces of the leaves, particularly in locations where the concentrations of Pb and Cd were higher. The results showed that the plant demonstrated a physiological response to the heavy-metal pollution, which suggests that roadside plants are indicators of heavy-metal accumulation and the effect on the environmentZa oceno ekološke obremenjenosti na območjih, ki so onesnažena s težkimi kovinami, moramo izvajati natančne in drage meritve, če hočemo najti kemične in biološke pokazatelje, ki kažejo na kopičenje težkih kovin v okolju - organizmih. Naredili smo raziskavo kopičenja težkih kovin in njihovih posledic na rastlino lucerna (Medicago sativa L.) na različnih oddaljenostih od ceste. Skupna vsebnost težkih kovin je bila določena z atomsko absorpcijsko spektrofotometrijo. Najvišje koncentracije težkih kovin Pb in Cd so bile dosežene v bližini ceste. Prav tako smo ugotovili korelacijo med koncentracijo težkih kovin v rastlini in številom por na obeh straneh listov. Višja koncentracija težkih kovin v rastlini je povezana z večjim številom listnih por. Rezultati so pokazali, da se rastline fiziološko odzovejo na prisotnost težkih kovin, zato je stanje teh rastlin v okolju lahko pokazatelj onesnaženja okolja s težkimi kovinamiTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije