Published in Scientific Papers. Series B, Horticulture, Vol. LXVIV, Issue 1
Written by Andreea Adriana PETCOV, Florin SALA

This research analyzed the response induced by certain chemicals in Allium cepa seedlings under laboratory conditions, University of Life Sciences “King Mihai I” from Timișoara. Onion bulbs with roots were treated with water (V1), copper sulfate (CuSO₄ 300 mg L^-1 – V2), Faster insecticide (0.3 ml L^-1 – V3, 0.4 ml L^-1 – V4, 0.5 ml L^-1 – V5) and Karate zeon insecticide (0.15 mg L^-1 – V6; 0.20 mg L^-1 – V7; 0.25 mg L^-1 – V8). Morphological parameters (root length, RL; leaf number, LN; leaf length, LL) were determined. The results of the experimental trials presented statistical safety (p<0.001). For RL morphological parameter, significant differences from the mean ( RL = 4.62 cm) were shown by the variants V1 (∆RL = 4.09 cm; p<0.01), and variant V2 (∆RL = -3.32 cm; p<0.01). In the case of the LN parameter, significant differences compared to the mean ( LN = 0.99) were presented by variant V1 (∆LN = 0.91, p<0.001), and variants V2 and V3 (∆LN = -0.55, ∆LN = -0.50, p<0.05). For LL morphological parameter, compared to the mean ( LL = 4.41), significant differences were presented by variant V1 (∆LL = 6.07, p<0.001), and variants V2 and V3 (∆LL = -3.39, ∆LL = -2.77, p<0.05).

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