%K Pigeonpea, Screening, Resistance, Pod borers, Biochemical traits
%A S Chakravarty
%A T Bera
%A M Agnihotri
%A J Jaba
%I Journal of Pure and Applied Microbiology
%V 10
%L icrisat9923
%J Journal of Pure and Applied Microbiology
%N 4
%P 3009-3016
%R 10.22207/JPAM.10.4.71
%D 2016
%X Ten promising short duration genotypes of pigeonpea were screened under field
conditions for two years (2013-15) to identify sources of resistance against pod borers. On
the basis of per cent pod damage and Pest Susceptibility Rating (PSR) index, genotypes
PUSA-2012-1, PA 409, PA 406, AL1747 were found to be least susceptible (PSR= 4 to 5)
while two genotypes, AL 1790 and AL 1770 were ascertained highly susceptible against
pod borers having damage rating of 8 over the susceptible check cultivar (Manak). Phenol
and flavonoid content present in the pod wall of all the test genotypes/cultivars were also
estimated. Highest phenol and flavonoid content was recorded from PUSA-2012-1 while
the lowest content was obtained from the genotype AL 1790. Correlation studies made
with these biochemical constituents revealed a significant and negative association of
pod damage (%) with phenol (r = -0.896**) and flavonoid (r = -0.872**) content in pod
walls. Thus the genotypes having higher content of phenols and flavonoids in their pod
walls offered resistance against pod borer complex.
%T Screening of Short Duration Pigeonpea [Cajanus cajan (L.) Millsp.] Genotypes against Major Insect Pests