Resistance in Soybean Genotypes to Whitefly <i>Bemisia Tabaci</i>

Abstract

This study demonstrates the defensive responses of eight soybean genotypes based on plant metabolites to the whitefly Bemisia tabaci. At two sampling intervals (30 and 50 days after sowing) secondary metabolites viz., total phenols, o-dihydroxy phenols, flavonols and tannins and primary metabolites viz., total soluble sugars, reducing sugars and total soluble proteins have been estimated from uninfested and infested soybean plants (125 whitefly adults/plant). The genotypes revealed significant variation in secondary metabolites while primary metabolites decreased. The correlation between whitefly and metabolites showed that secondary metabolites were significantly negatively correlated incidence while primary metabolites were significantly positively correlated.