%0 Journal Article
%T THE DEFENSE ACTIVATOR FROM YEAST FOR RAPID INDUCTION OF RESISTANCE IN SUSCEPTIBLE PEARL MILLET HYBRID AGAINST DOWNY MILDEW DISEASE
%A Hindumathy C.K.
%J International Journal of Agriculture Sciences
%D 2012
%I Bioinfo Publications
%X Elicitors derived from yeast are shown to be active in eliciting resistance against disease in plants for wide range of pathogens. In the present study elicitor derived from yeast used in the form of seed treatment in pearl millet crop against an oomycetous downy mildew pathogen Sclerospora graminicola. The suspension at various concentrations of 0.25, 0.5, 1.0, 1.5 and 2.0mg mL-1 for different time intervals of 3, 6, 9 and 12 h were tested. Among the concentrations tested 0.5mg mL-1 for a period of 6 h soaking offered 98% seed germination and seedling vigor index 1652. The seed germination and the seedling vigor were significantly greater than the untreated check. The optimum time interval required by the concentration of 0.5mg mL-1 was 3 days to offer 78% protection against downy mildew disease. Biochemical studies carried out showed that treated seedlings showed increased level of tyrosine ammonia lysase and poly phenol oxidase and reached a peak at 12 h after inoculation (h.a.i). which was 45% more than their respective uninoculated control. In non-denaturing gel stained for poly phenol oxidase revealed the presence of 3 isoform in elicitor treated seedlings .
%K Downy mildew
%K elicitor
%K induced resistance and pearl millet.
%U http://bioinfopublication.org/viewhtml.php?artid=BIA0000014