摘要
枣疯病是我国枣树上一种严重的传染性病害。多年试验表明:土壤、花粉、种子均不传病,病叶汁液接种以及病健树根系在地下的自然接触也不传病;人工嫁接虽可传病,但枣树繁殖一般不通过嫁接,因而不是自然传病的途径。经过对在枣树上活动害虫的系统调查,1980年于河北玉田选常见的11种叶蝉进行了传病实验,证明橙带拟菱纹叶蝉(Hishimonides aurifacialis Kuoh)、凹缘菱纹叶蝉(Hishimonus sellatus Ulhler)和红闪小叶蝉(Typhlocyba sp.)均能传播枣疯病。从接种发病的实生枣苗维管束和媒介叶蝉的唾液腺的超薄切片中,都检查到枣疯病原类菌原体。鉴于这三种叶蝉普遍存在于北方枣区。因此,认为是枣疯病在北方枣区自然传病的主要媒介。
Jujube(Zizyphus jujuba Mill)witches′broom is a severe infectiousdisease prevailing in many growing regions of jujube in China.The re-sults of studying on this disease for several years demonstrated that it can not be transmitted by soil,seed,pollen,sap inoculation or natural con-tact between the roots of diseased and healthy trees under ground.Graf-ting is one of the easy ways of transmission of the disease.As it hasnever been used in practice for jujube propagation,it can not be a naturalway of infection in orchards.Investigation on the possibility of insect vectors usually feeding on or visiting to jujube trees revealed that species of leafhoppers such as Hishimonoides aurifaeiales Kuoh.,Hishimonus sellatus Uhler and Typhlocyba sp.are able to transmit the jujube witches′broom disease.A mycoplasma-like organism associated with jujube witches′broom was found both in vascular boundles of the diseased jujube seedlings in-oculated with leafhoppers and in salivary glands of the vector insectshaving been fed on diseased plants.It was,therefore,considered thatthe leafhoppers mentioned above are insect vectors of jujube witches′broom caused by MLO in natural conditions.
出处
《植物病理学报》
CAS
1984年第3期141-146,共6页
Acta Phytopathologica Sinica
