COMPARATIVE STUDY ABOUT THE EFFECTS INDUCED BY TREATMENTS WITH COPPER MICROELEMENT IN COMBINATION WITH ZINC AND LEAD
ON GERMINATION IN MAIZE (KISKUN 4255 HYBRID)
Tomulescu Ioana Mihaela, Merca Vasilica,
Gavriş Georgeta, Pusta Claudia Teodora
The majority of researchers include the next elements in the group of microelements: B, Zn, Mn, Cu, Na, Co, Mo, I, Sn, Cl, Al, V, F, Cr, Hg, Cs, Li, Cd, As, Th, Rb, Cr, W, Ti, Sn, Se, Ba, Br. Sporadically are mentioned as microelements the next elements: Au, Ra, Hg and Pb.
To establish the effects induced by copper microelements treatments in combination with zinc and lead on germination in maize and barley, we used solutions with different concentrations. So, we treated maize caryopsis (Kiskun 4255) with copper and zinc mixed solutions (CuSO4 + ZnSO4) with following concentrations: 0,03%, 0,003% and 0,0003%. With these solutions we treated the maize caryopsis for 12 and 24 hours.
We determined the energy and capacity of germination. Also, we utilised CuSO4 and Pb(NO3)2 mixture solutions with different concentrations: 0,0005%+0,003%, 0,005%+0,03% and 0,05%+0,3%. It were determined the energy and capacity of germination. Control group was treated with water. In all cases, we observed a strong inhibitive effect in both of microelements combinations comparatively with control group.
The results are significantly because they show the inhibitive effect of copper microelement. It seems that only copper has not a very strong effect on germination. In combination with zinc, the effect of copper isn׳t so harmful, but in combination with lead, germination is significantly inhibited comparatively with control group.