RT Journal T1 ACCUMULATION AND DISTRIBUTION OF OXYTETRACYCLINE AND CHLORTETRACYCLINE IN TOBACCO SEEDLINGS AND THEIR EFFECTS ON GROWTH A1 X. J. Wang A1 Y.J. Wang A1 J.W. Nian A1 S.W. Liu A1 Y.H. Zhang A1 Y.S. Xia A1 F. Wang A1 L.F. Wang A1 R.R. Liu A1 X.L. Liao A1 L.F. Zhao A1 C. Xia A1 F.Z. Nian JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 32 IS 3 SP 746 OP 752 YR 2022 FD 2022/05/30 DO DOI http://doi.org/10.36899/JAPS.2022.3.0476 AB

The accumulation and distribution of oxytetracycline (OTC) and chlortetracycline (CTC) in tobacco seedlings, and their effects on tobacco seedling growth, were studied using the floating seedling method in greenhouse conditions. Results showed that both OTC and CTC could inhibit the growth of tobacco seedlings, and inhibition effects were greater at higher concentrations. Compared with controlling tobacco seedlings treated with the highest concentration T4 (100 mg/L), the root length and root fresh weight in OTC treatment group decreased by 39% and 53%. The length and fresh weight of stem decreased by 34% and 39%. The maximum leaf area and fresh leaf weight decreased by 34% and 46%. The root length and fresh weight in CTC treatment group decreased by 37% and 54%. The length and fresh weight of stem decreased by 53% and 62%. The maximum leaf area and fresh leaf weight were reduced by 59% and 70%. The higher the concentration of antibiotics in the nutrient solution, the higher the accumulation of antibiotics in each tissue of the tobacco seedlings, and accumulation increased significantly from 2 to 80 μg/g over time (7-20 days). And accumulation in leaves (5 to 60, 5 to 80 μg/g respectively) was greater than that in roots (3 to 30, 3 to 15 μg/g respectively) and stems (2 to 25, 2 to 25 μg/g respectively), and CTC inhibited tobacco seedlings more than OTC. The above mentioned two kinds of antibiotic have an effect on tobacco seedling.

K1 accumulation, chlortetracycline, growth, oxytetracycline, seedling, tobacco PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=AG-20-0339