文冠果(Xanthoceras Sorbifolia Bunge)是我国北方重要的木本油料树种之一,深受群众欢迎。近年来,在辽宁、吉林和内蒙古文冠果主要栽培区都先后发现了一种新的病害,受害植株轻者新梢细弱、叶片缩小皱裂、黄化、树势衰弱,重者全株萎缩枯死,初步判定是类菌质体。该病害对文冠果的结实和生长影响很大,且用农药防治一般均无效。本文根据两年来对文冠果萎缩病(类菌质体)的田间调查和电镜观察,将其部分研究成果报道如下。一、材料和方法 1.材料 Xanthoceras Sorbifolia Bunge is one of the most important woody oilseeds in northern China, and is well received by the public. In recent years, Liaoning, Jilin and Inner Mongolia, the main cultivated areas have found a new disease, the victim plants young shoots thin, folds shrink wrinkles, yellowing, shicheng weak, heavy whole plant atrophy Withered, the initial determination is a type of plastid. The disease has a great effect on the fruiting and growth of Xanthoceras sorbifolia, and is generally ineffective with pesticide control. Based on the field investigation and electron microscopic observation of the fruit atrophy in the past two years, the results of some of its researches are reported as follows. First, materials and methods 1. Materials