枣园林果树木腐烂病是近年来新疆红枣主产区枣树及其防护林上新的毁灭性病害，并已成为该地区红枣产业可持续发展最大的潜在威胁。本项目以枣园林果树木腐烂病群为研究对象，在对新疆主产区特别是阿克苏地区典型绿洲栽培模式枣园系统调查基础上，获得不同林分结构、不同地理来源、不同生态条件、不同品种、不同树龄的枣树及其防护林腐烂病菌株。对不同来源菌株进行形态特征观察和ITS序列分析，明确枣园树木腐烂病菌种类和菌群结构；通过致病性测定和ISSR的分子标记方法，揭示该病原菌的遗传分化背景、遗传演化过程、菌株的地理生态、不同寄主上分离菌株是否有遗传分化和致病力分化、不同林分结构是否影响树木腐烂病的遗传分化和致病力分化等问题。为抗病育种、栽培品种的引进、品种的布局、多种林木混栽模式抗病和病害防控等相关研究提供理论依据。

Jujube and shelterbelt trees canker break out seriously and this devastating diseases has become the region's biggest potential threats for sustainable jujube industry development in recent years in Xinjiang. The study objection is Fruit Trees Valsa mali in Jujube Orchard planting and its shelterbelt growing areas especially in aksu region, a typical oasis in Xinjiang. By means of morphological combines of rDNA-ITS Sequence Analysis, we can analysis the population structure and identification pathogens of Valsa mali based on the investigation, the different stand structure and geographical source, under different ecological conditions, different varieties, different age of Chinese jujube. By methods of pathogenic detection and Inter-simple sequence repeat (ISSR), we can find out pathogenicity relationship between differentiation and genetic diversity.The question that the genetic differentiation of the ecological background, genetic evolution process, the strain of geography, the different host isolates whether have genetic differentiation and disease differentiation, and different stand structure whether affect the genetic trees rot disease differentiation and disease differentiation can be answered. All those lay basis for disease resistance breeding, varieties of the introduction, the layout of the varieties, a variety of trees mixed mode resistance and provide theoretical basis for disease control and prevention and other related research.