Notice of RetractionScreening of Tolerant Rice Genotypes to 1,2,4-Trichlorobenzene Stress at Seedling Stag

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

1,2,4-trichlorobenzene (1,2,4-TCB) has pervaded in natural environment and industrial production. It would cause a series of problems due to its longevity and amassment. The EPA has added it into the environmental pollutant list. In order to evaluate the tolerance of the fifty rice genotypes to 1,2,4-TCB stress and identify proper screening indices and concentration, the effects of 1,2,4-TCB on the rice seed germination and seedling were studied. At first, the concentrations of 1,2,4-TCB treated 20 genotypes were 0 mmol/Kg sand, 0.35 mmol/Kg sand and 3 mmol/Kg sand, and 1,2,4-TCB dissolved in 0.3 ml acetone were added into sands. The result of this experiment showed that 0.35 mmol/Kg sand was the better screening concentration. So 0 mmol/Kg sand and 0.35 mmol/Kg sand were adopted to treat 50 genotypes in the latter study. Germination potential, germination rate, the longest root length, root number, plant height, the dry weight of shoot and roots of different rice varieties at seedling stage were measured. Character relative values were got from measure values of treated groups and control groups. They were used as tolerance indices (TI) of early seedlings. Cluster analysis of different wheat varieties based on TI was adopted. The results showed that the fifty rice varieties could be grouped into four types, .i.e. TCB sensitive varieties, relatively sensitive varieties, tolerant varieties and relatively tolerant varieties.