红托竹荪不同温湿度涂抹烂皮病菌感染分析

为探明红托竹荪菌蛋烂皮病菌侵染性、传播性及产生条件,从病害棚采集烂皮菌蛋为材料,以烂皮菌蛋部位为感染病菌,用于对正常红托竹荪菌蛋进行伤和无伤涂抹病菌感染试验,以不涂抹病菌为对照,在不同温度湿度梯度下试验观察。结果表明:在温度25℃相对湿度85%条件下,病菌对正常红托竹荪菌蛋伤和无伤都不发生感染,在温度35℃相对湿度75%条件下进行48h的培养,红托竹荪菌蛋伤或无伤、涂抹和不涂抹病菌都发生菌蛋烂皮现象。说明高温高湿是诱发红托竹荪菌蛋发病的关键,病菌是因菌蛋受高温损伤,导致菌蛋免疫功能低下,病菌侵染。

Analysis of Bark -rot Disease Infection of Dictyophora Rubrovalvata Bacteria Egg under Different Temperature and Moisture

In order to explore the infectivity,transmissibility and production conditions of dictyophora rubrovalvata bacteria bark -rot disease,collecting bark -rot disease egg as material from the disease shed,using bark -rot disease egg as the couses of infection site, to condust the normal dictyophora rubrovalvata bacteria egg infection test of the injury and without injury daubing disease,using without daubing disease as contral,having experimental observation in different temperature and moisture gradient.The results showed that the normal dictyophora rubrovalvata bacteria egg of the injury and without injury do not occur infection at the temperature 25℃ and mois-ture 85%;the dictyophora rubrovalvata bacteria egg of the injury and without injury,and daubing and without daubing disease occur infection at the temperature 35℃and moisture 75% in 48 h.This shows hot and humid environment is the key induced factor of the dic-tyophora rubrovalvata bacteria egg infection.When the bacteria egg is injury by hot,disease leads to low immune function,and infection.