Eskişehir ili hububat ekim alanlarında hububat kök ve kökboğazı çürüklüğü hastalık etmenlerinin saptanması, buğday ve arpada Drechslera sorokiniana (Sacc.) Subram. and Jain'ya karşı genitör çeşit ve hatların belirlenmesi.

Abstract

218 wheat and barley fields of Eskisehir province for the root and crownrots were examined and 194 of them were found to be infested. 24 fungi species of 8 genus among the samples collected from the infested fields were determined. 14 out of these 24 species were Fusarium spp . , 3 were Drechslera spp ., 2 were Alternaria spp . , 1 from each of Ophiobolus graminis , Ulocladium atrum, Nigrospora oryzae, Phoma spp. and sterile fungus. 199 barley varieties and races chosen from the cross-bred field of Anatolia Agricultural Research Institute in 1997 and 1998 were used in barley seed pathology, together with 99 wheat varieties and races. Alternaria alternata Keissler, Septonema spp., Penicillium spp., Rhizopus stolonifer Lind, A.triticina Prasada and Prabhu, Cladosporium herbarum Link ex Gray, Ulocladium atrum Preuss, Alternaria spp., Fusarium moniliforme Sheld., Stemphylium herbarum Rabenh., Phoma spp., Drechslera teres Shoem., Aspergillus niger van Tieghem, A.parasiticus Speare, Curvularia inaequalis Boedijn., D.tetramera Subram. and Jain, Mucor spp ., A.candidus Link , D.sorokiniana Subram. And Jain, Lacellina spp., Trichoderma viride Pers ex Gray. Ustilago hordei Lager and sterile fungi as a ratio of 0.88 % were isolated from the barley seeds. Reaction of 99 wheat and 199 barley varieties and races were tested against D. sorokiniana . A wheat variety and 36 barley varieties and races were found to be Resistant (R), 10 wheat and 39 barley varieties and races were found to be Mid Resistant (MR) against D.sorokiniana .