摘要
研究表明，樟子松枯梢病病原菌分生孢子的萌发与通气和光照条件关系不大，无需外界供给养料。孢子的萌发主要取决于温度和湿度条件。在水中， 孢子萌发的温度范围为１５ ～３５ ℃，最佳温度为２５ ℃。在２５ ℃条件下，孢子在４ ｈ 以内即可萌发。在相对湿度达９０ ％ 以上时，孢子萌发率随湿度增大而升高。６ ～８ 月是辽宁章古台地区病菌萌发侵染的适宜时期，化学防治应在此期间进行。
Studies showed that germination of Sphaeropsis sapinea on Pinus sylvestris var.mongolica was not related to light or aeration conditions.Spores needed no external nutrient to germinate.Germination of spores was primarily dependent on temperature and humidity.Spores germinated in water at temperatures ranging from 15℃ to 35℃,and percent germination was highest at 25℃.Spores started to germinate within 4h at 25℃.Spores could not germinate when air relative humidity was 75% or lower.Germination rate was in positive correlation to air humidity while the latter ranging from 90% to 100%.In Zhanggutai,Liaoning,PRC,the period from June to August was suitable for infection,in which chemical control could be effective.
出处
《辽宁林业科技》
1999年第4期25-28,共4页
Liaoning Forestry Science and Technology
关键词
松
枯梢病
病原菌
孢子萌发
生物学特性
樟子松
Sphaeropsis sapinea,Pathogenic fungus,germination of spores,biology
