ASSESSMENT OF SOD AND CORRELATION WITH AUDPC,YIELD AND TEST WEIGHT IN RESISTANT AND SUSCEPTIBLE GENOTYPES OF WHEAT DURING INFECTION

Abstract

The 32 resistant and 2 susceptible lines are inoculated by pathogen viz. Bipolaris sorokianiana at the concentration of 104 spores per ml of solution in the evening time and materials are assess to quantify superoxide dismutase (SODs) and found that the SODs are increases in both resistant and susceptible lines over a time period but in resistant lines (ranges 0.738 – 0.955 EU/g fresh weight) it increases rapidly and overwhelmed the toxic effects of ROS and causes less damage as compare to susceptible lines viz. Sonalika (0.509 EU/g fresh weight) and CianoT79 (0.5139 EU/g fresh weight) and are negative correlated with AUDPC (r= -0.513), and positively correlated with yields (r= 0.424), test weight (r= 0.487). SODs are high heritability character (69.82%) and good for selection to next generation. SODs increase with the time it shows highest at the time interval of 48 hrs (0.876 EU/g fresh weight) and least at the time interval of 12 hrs (0.707EU/g fresh weight) after the infection. So in this result found that genotypes have high SODs shows high resistance towards the pathogens attack and leads to less damage from the ROS effects which are the causes of biotic stresses in the plants (B.sorokiniana)