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Turkish Journal of Biology

DOI

-

Abstract

The effect of heavy metals, namely mercury (Hg^{+2}), zinc (Zn^{+2}), nickel (Ni^{+2}) and cobalt (Co^{+2}), which were applied in the form of chloride salt, and that of lead (Pb^{+2}) and cadmium (Cd^{+2}) applied in the form of nitrate salt, on the pollen germination and tube growth were investigated on apples ( Malus sylvestris cv. Golden). According to the results obtained, these heavy metals led to a significant decrease in the pollen germination and tube growth. It was found that there was a parallelism between the concentration of heavy metal salt, and pollen germination and tube growth. Among the heavy metals applied in the form of chloride salt, mercury (Hg^{+2}) showed the highest toxic effect, followed by zinc (Zn^{+2}), nickel (Ni^{+2}) and cobalt (Co^{+2}) respectively. It was observed that among the heavy metals applied in the form of nitrate salt lead (Pb^{+2}) in higher concentrations was more effective than cadmium (Cd^{+2}). It was concluded that heavy metals affect pollen germination and tube growth at different rates.

Keywords

Heavy Metal, Malus sylvestris cv. Golden, pollen germination, pollen tube growth.

First Page

677

Last Page

684

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