On the identification of physiological specialization in Anguina tritici populations

Existence of physiological variations in geographical populations of Anguina tritici was fully established. Two distinct physiological populations, one represented by Bihar and the other by Haryana, U.P., Rajasthan and Delhi were identified. Nematode galls from Bihar were much more aggressive than the galls collected from Delhi, Haryana, Rajasthiul and U.P.