Evaluation of resistance of malus germplasms to apple canker（Valsa ceratosperma）
To evaluate the total resistance of the apple germplasm resources and to find out the resistants of apple germplasm to the apple canker;204 Malus germplasm accessions were inoculated with the suspension of germinated conidia of two pathogenic strains [Valsa ceratosperma（Tode et Fr.） Maire] on the excised twigs for two years.Differences in disease incidence and severity were found among germplasm accessions.The proportion of cultivars and genotypes of Malus domestica with low or moderately low incidence was higher（16.6%）while the number of accessions with moderately light and very light severity was larger（30.8%） in wild genotypes（Malus sp.）.The pathogenicity variation of the two isolates was significant.According to the comprehensive evaluation Kelegou Baccata LF,Aomori Early and Calville Rouge were resistant.While,Italian Early,James Grieve,Mengpaisi,M.sieversii 25,France 8,Qiuxing Crab,S7-5 and Whithey were medium-resistance.
MalusResistantValsa ceratosperma（Tode et Fr.） Maire
国家科技期刊平台
NSTL
万方数据
维普
