DefinePK

Abstract

Ten genotypes of stored wheat (00183, 01180, 01196, 01197, 80055, 00057, SH-2002, AS-2002, V-98059, and V-99022) were screened for resistance/susceptibility against Rhyzopertha dominica Fb. Under three temperature levels (25°C, 28°C, 30°C with RH 75%) and room conditions with 23 to 30 °C and 60-75 percent RH. The data regarding emergence of male female, number of damaged grains, weight of damaged grains and grain weight loss were recorded in various genotypes after three months storage period i.e. March, April, and May,2004. The genotype SH-2002 showed maximum emergence of females (27.58) and males (6.58), maximum number of damaged grains (53.75/50g) with maximum weight (1.68/50g) and maximum weight loss (3.36%). V[1]98059 showed minimum emergence of males (3.33), females (9.33) and minimum number of damaged grains (16.75), whereas weight of damaged grains (0.37%) and loss in grains weight (0.75%) was the lowest on AS-2002. The genotypes AS-2002 and V- 98059 showed relatively resistance response to R. dominica, The emergence of female (r=0.820) and male(r=0.712), number of damaged grains (r=0,997) and weight of damaged grains showed positive and highly significant correlation with grains weight loss. The temperature of 28 “C was found to be the most favorable for the development of pest.