TY - JOUR T1 - Study of Responses of Barley Landraces to Barley Leaf Stripe, Pyrenophora graminea TT - ارزیابی‌ واکنش‌ توده‌های‌ بومی‌ جو به‌ بیماری‌ لکه‌نواری‌ جو Pyrenophora graminea JF - JCPP JO - JCPP VL - 9 IS - 1 UR - http://jcpp.iut.ac.ir/article-1-293-en.html Y1 - 2005 SP - 215 EP - 224 KW - Degree of resistance KW - Horizontal resistance KW - Isolate KW - Vertical resistance N2 - The reaction of forty two barely landraces, mostly from Azarbijan Province and a susceptible cultivar, Zarjo, was studied under greenhouse conditions in the presence of four highly virulent isolates of Pyrenophora graminea, i.e. Marand 3, Ajabshir 2, Khasseban-Tireh, and Bostanabad. The experimental design was a split-plot based on randomized complete blocks with three replications. Landraces were considered as sub-plots and the isolates as whole plots. The seeds were inoculated by the sandwich method and responses of the landraces were evaluated by the method of Mathur and Bhatnagar. The resistance of landrace #1 to the isolates of Marand 3 and Ajabshir 2 and that of landrace # 27 to the isolate of Ajabshir 2 was observed. These landraces could be used as a source of vertical resistance in barley. Landraces 6, 8, 11, 12, 13, 15, 17, 25, 27, 28, 29, 31, 33, 34, 36, 37 and 41 were classified within the range of partial resistance to partial susceptibility, which may be utilized as the sources of horizontal resistance. M3 ER -