作　　者： ; ; ; ; ; ;

机构地区： 北京农学院

出　　处： 《果树学报》 2008年第3期362-366,共5页

摘　　要： 对诱导剂苯并噻二唑(Benzothiadiazole,BTH)在不同质量浓度下对苹果抗斑点落叶病的诱导作用,以及诱导抗性与木质素和富含羟脯氨酸糖蛋白(HRGP)含量的关系进行了研究。BTH诱导苹果主枝顶梢,整株接菌后,采用病情指数统计发病程度。培养基测定抑菌活性;比色法测定苹果受诱导后木质素和HRGP含量。结果表明,BTH能诱导苹果产生系统获得性抗性,当诱导质量浓度为150mg/L时,可使病情指数由对照的26.34下降到16.87,抗病持效期可达15d,而BTH本身对苹果斑点落叶病菌分生孢子萌发及菌丝生长无明显影响。生理指标测定表明,木质素和富含羟脯氨酸糖蛋白(HRGP)含量增加,可能是抗病性增强的生理原因。 Effects of resistance induced by Benzothiadiazole（BTH ） at different concentrations against Alternaira alternata f. mali （AAM） in apple were investigated. Upper branches of apple trees were inoculated with spores of AAM after applying BTH as a foliar spray and disease index was investigated. The inhibitory effects of BTH against AAM on potato dextrose agar were studied. The contents of Hydroxyproline-rieh glyeoprotein （HRGP） and lignin were measured with eolorimetrie method after BTH treated. The resuhs showed that application of BTH at different concentrations on apple leaves had significant effect to restrain AAM. The effect of 150 mg/L was distinctly better than others, and it could reduce the disease index from 26,34 to 16.87. In addition, the induced resistance would last more than 15 d after treated with 150 mg/L BTH ; while eonidiophores germination and myeelia growth weren＇t restricted by BTH itself. The accumulation of HRGP and the deposition of lignin were measured after BTH treatment.

关 键 词： 苹果斑点落叶病 苯并噻二唑 诱导抗病性 木质素 富含羟脯氨酸糖蛋白

领　　域： [农业科学] [农业科学]