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中文摘要：
【目的】为分析苹果实生树对苹果腐烂病抗病性的遗传规律，【方法】2010-2011年连续2a用2个苹果腐烂病菌株对‘紫塞明珠’ב富士’的杂种实生树1150株进行离体接种鉴定，采用次数分布分析法研究了苹果腐烂病抗病性遗传。【结果】结果表明，连续2a接种2菌株主基因遗传率均在78．5％-85．5％。该实生群体对菌株03-8的感病性的变异由5个主基因位点分离所致，而对菌株xc56的感病性分离与4个主基因位点有关，且年份间表现稳定。【结论】离体枝条接种病原后，发病／不发病表现为质量性状遗传，发病对不发病为显性。感病的实生树接种后发病的病斑长度表现为多基因数量性状遗传。
英文摘要：
[ seedlings Objective]To study the inheritance of Valsa canker resistance. [Method] 1 150 apple hybrid asiatica ‘Zisai Pear＇ ×M. domestica ＇Fuji＇） were inoculated with the germinated conidia suspension of two pathogenic strains [Valsa mall Miyabe et Yamada] on excised twigs for two years （2010 and 2011）. Inoculation results were analyzed using frequency distribution analysis. [Result]The joined heritability of these major genes was estimated to be 78.5% to 85.5% in this hybrid group when inoculated by the two strains in the year of 2010 and 2011 respectively. The variation in susceptibility to the strain 03-8 of this hybrid seedlings group was attributed to the segregation of 5 major alleles genes, whereas the susceptibility variation to the strain xc56 within this population was attributed to the segregation of 4 major alleles genes. The regularity of resistance within the adopted population to both of the two strains was respectively stable during two years. [Conclusion]The incidence and non-incidence were qualitatively segregated, and incidence was dominant to non-incidence. The lesion length of diseased seedlings was a quantitative trait.
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