Susceptibility of Wheat Varieties to Soil-Borne <i>Rhizoctonia</i>Infection

作     者：Gyula Oros Zoltán Naár Donát Magyar 

作者机构：Department of Microbiology and Food Technology Eszterházy Károly College Eger Hungary National Institute of Environmental Health Budapest Hungary Plant Protection Institute Hungarian Academy of Sciences Bu-dapest Hungary 

出 版 物：《American Journal of Plant Sciences》 (美国植物学期刊（英文）)

年 卷 期：2013年第4卷第11期

页      面：2240-2258页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主　　题：Wheat Rhizoctonia Tolerance Brown Patch Soil-Borne Virulence 

摘      要：Response of 19 wheat varieties cultivated in Hungary varied within large limits to soil borne Rhizoctonia infection. The most frequent symptom, usually leading to damping off was the root neck necrosis. Four significant factors influencing the susceptibility of wheat comprised 71% of total variation but none of them was dominant. The inhibition of development of survivors in Rhizoctonia infested soil correlated with overall susceptibility of variety concerned. The varieties Emese, Kikelet and Palotás are proved to be less susceptible, but none of the varieties could be certified as tolerant. No relationships were revealed between pathogenicity of 26 Rhizoctonia strains studied and their taxonomic position or origin. The anamorph strains of Athelia, Ceratobasidium, Ceratorhiza and Waitea similar to Thanatephorus anamorphs selectively infected the wheat varieties, but the syndromatic pictures were undistinguishable with unarmed eye. R. solani was proved to be more aggressive against germinating wheat than R. cerealis. Nine significant factors influencing the virulence of Rhizoctonia strains comprised 82% of total variation, and six of them influenced exclusively Thanatephorus anamorphs.