Studies on Correlation of Physical Characters and Grain Loss Due to Sitophilus oryzae on Wheat Varieties

Correlational of studies were made between physical characters (hardness, moisture and damaged grains) fecundity F₁ progeny and index of susceptibility while loss in weight and damaged grain correlated with hardness and moisture. Hardness of grain showed significant negative correlation with fecundity (−0.9515), F₁ progeny (−0.9458) and index of susceptibility (−0.9846). It means increased hardness, decrease ingrowth and development and vice-versa. The moisture content of the grain showed significant positive correlation with fecundity (0.9614), F₁ progeny (0.9594) and index susceptibility (0.9821). The loss in weight and damages grain showed significant positive correlation with F₁ progeny and index of susceptibility that increased fecundity, F₁ progeny and index of susceptibility.