不同温度下云南松对纵坑切梢小蠹伴生菌的抗性变化  

Effect of temperature on resistance of Pinus yunnanenensis to inoculation with Leptographium yunnanense, a pathogenic fungus associated with Tomicus piniperda.

作　　者：廖周瑜[1] 叶辉[1] 吕军[1] 夏元铃[1] 

机构地区：[1]云南大学生物系,昆明650091

出　　处：《应用生态学报》2003年第10期1747-1750,共4页Chinese Journal of Applied Ecology

基　　金：云南省应用基础研究基金资助项目(1999C0012M)

摘　　要：温度对云南松的抗性以及纵坑切梢小蠹伴生菌的生长和致病力有着重要的影响.温度变化将导致二者之间的对抗力量的变化:在温度低于10℃和高于30℃条件下,云南松的生理代谢、抗性以及伴生菌的生长都将受到抑制,但伴生菌受到的抑制作用更大,云南松的抗性相对增强;在15～30℃温度范围内,纵坑切梢小蠹伴生菌生长较快,云南松的抗性相对减弱.结果表明,在温度相对适中的条件下,纵坑切梢小蠹伴生菌的生长侵染力相对增强,而云南松的抗性相对减弱.The study showed that temperature had an important effect both on the resistance of Pinus yunnanensis and on the growth and virulence of Leptographium yunnanense, a pathogenic fungus associated with Tomicus piniper-da attacking Pinus vunnanensis. which would result in the competence variation between them: at lower (< 10 ℃ ) and higher temperature( >30 ℃ ), the growth and virulence of L. yunnanmse were inhibited, while at 15 ℃ ~ 30 ℃, the resistance of Pinus yunnanensis was relatively weaker, indicating that in warmer climates, the growth and virulence of L. yunnanense were relatively strengthened, but the resistance of Pinus yunnanensis was relatively weakened.

关 键 词：云南松 纵坑切梢小蠢 伴生菌 温度 抗性 

分 类 号：S763.1[农业科学—森林保护学]