Published in Scientific Papers. Series B, Horticulture, Volume LXII
Written by Maria BRÎNZĂ, Elena Liliana CHELARIU, Andreea AIORDĂCHIAEI Lucia DRAGHIA
The studies aimed at establishing the level of copper concentration in the soil, which Alyssum murale species can tolerate without significantly affecting the percentage of germination and plant sprouting. The experience was conducted in 4 variants with 3 replicates, each replicate having 100 seeds. The humidity of the substrate for sowing was performed with water for the control sample (C) and with CuSO4 solutions for the other variants (it was calculated the required amount of CuSO4 to obtain a contamination with Cu of 20 ppm, 100 ppm, 200 ppm and, respectively, 500 ppm). The influence of copper on seed germination was assessed by the percentage of plant sprouting, germination rate, seedling rate and velocity. The significant decrease in the percentage of normal sprouts and the increase of percentage of dead seeds in variants V3 and V4 suggest the level of supportability of these species. The increase of copper concentration in the germination substrate caused the decrease of the seedling rate and of the velocity of seedling.
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