SCREENING OF SPRING WHEAT VARIETIES RESISTANT TO SOIL EFFLUENCE WITH HEAVY METALS TO CREATE ECOLOGICALLY PURE PRODUCTION

Author (s) : Dr.C. Marimuthu & Dr.M.Rajasekar

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Abstract :
The aim of this research work is to identify germplasm of the wheat that is resistant to heavy metals (zinc, cadmium) and which is priority in the East Kazakhstan, for identification of donors for selection on metal resistance and promising forms for production. Experiments were performed on 10-days-old sprouts of different wheat genotypes, which were grown on nutrient mixtures containing Cd ions in concentration 40 mg/l( CdSO4) or Zn in concentration 400 mg/l (ZnSO4).The measurement of biometric parameters carried out by conventional methods. Atomic absorption spectrophotometry has been used in order to determine the concentration of heavy metals (cadmium and zinc). In addition, growth parameters and tolerance index has been defined. Based on the results received in 2015 the following conclusion was drawn: throughout the experiment “Lyazzat” and “Samal” spring wheat varieties could be considered as the tolerance genotypes to zinc translocation to the over ground organs. In case of cadmium translocation most steady wheat cultivars were “Lyazzat”, “Omskaya18” and “Altai”, while the most sensitive was “Eritrospermum” wheat variety. Permeability of the membranes for electrolytes of steadier cultivars such as “Altai” has been changed to a lesser extent compare to more sensitive one like “Eritrospermum”. The result has showed that this fact in both cases due to effect of cadmium as well as zinc. This fact testifies that stability of plants in general can be caused by resistance of their cellular membranes to the action of stressor. Research has revealed tolerance and sensitive genotypes.

Keywords : heavy metals, wheat, growth parameters, accumulation of metals, membrane permeability, sensitive and tolerance genotypes.

Conference Date : 30/08/2019

Pages : 265

Paper ID : 19256