The Alleviative effects of isolated bacteria on growth of coriander under lead stress

To study the effect of biofertilizers on the growth and physiology of coriander (Coriandrum sativum) under lead stress conditions to a factorial experiment based on completely randomized design was conducted in four replications in research greenhouse of Mohaghegh Ardabili University at 2015-2016. Experimental factors included soil contamination by lead (0, 500, 1000, 1500 mg/kg soil) and inoculation with isolated bacteria (AHG1, AHG2 & AHG3). During this experiment traits such as plant height, plant dry and fresh weight, leaf number, diameter stem, and root dry weight were measured. Results showed that the interaction between stress and the use of lead and bacteria has been significant traits.The highest Pb treatment (1500 ppm) had decreased 57, 50, 20, 41, 15, 42, 25 % shoot weight, stem diameter, root diameter, root length, Plant height, leaf area and root dry weight and control was highest in all factors compare other treatments. The Pb concentration had not effect on root weight and stem dry weight. In this study strain AHG3 is better than other strain in morphological characteristic under lead stress.

Keywords:

Bacteria , Coriander , Morphology