Studies on correlation of physical factors and grain losses due to Trogoderma granarium on wheat varieties

The correlation studies were made on physical character (hardness, moisture & damaged grain) with fecundity, F₁ progeny and index susceptibility while loss in weight and damaged grain correlated with hardness and moisture. The hardness of the grain showing significant negative correlation with F₁ progeny (−0.806) and index susceptibility (−0.866). It means the increased hardness, decrease the growth and development and vice-versa. The moisture content of the grain having significant positive correlation with fecundity (0.524) and index susceptibility (0.665). The loss in weight and damaged grain showing significant positive correlation with F₁ progeny and index susceptibility that increased fecundity, F₁ progeny and index susceptibility.