SCREENING OF SOME VARIETIES OF WHEAT FOR INFESTATION BY THE SEED GALL NEMATODE Anguina tritici

This study was conducted to screen nine varieties of wheat represented by (Erbil 2, Erbil 4, IPA 99, Baraka, Rasheed, Abu Ghreeb, Faris, Buhooth 10, Saber-beg) during the agricultural season (2019-2020) for infection with Seed gall nematode Anguina tritici in the College of Agriculture and Forestry / University of Mosul, the results of the statistical analysis showed that the highest percentage and severity of disease via seed gall nematode was with the Buhooth 10 cultivar, followed by the cultivar Abu Ghreeb, with the percentage and severity of infection for both (50.65%, 19.14% and 0.53, 0.33) respectively. While there were no symptoms of the disease on the two cultivars Erbil 2 and Saber-beg, and the percentage and severity of their infection were 0.00. Erbil 2 is a new registration is prepared for a cultivar resistant to A. tritici, as well as for the cultivar Saber-beg, known previously for its resistance to disease. And the possibility of early detection of A. tritici nematode infection in the stage of formation primer spikes of the nine varieties studied in the experiment and its relationship with disease incidence , this is one of the new and effective methods used for the first time in Iraq to predict infection with seed gall nematode in the early stages of the plant life. The highest occurrence of juveniles nematode with the Buhooth 10 cultivar and the cultivar Abu Ghreeb was (78.16 and 22.83), respectively, which are directly proportional with percentage of the disease (50.65% and 19.41), respectively.