雷山杜鹃菌根的显微结构与菌根真菌的侵染率  

Microstructure and Fungus Infection Rate of Rhododendron leishanicum Mycorrhiza

作　　者：刘仁阳[1] 欧静[1] 

机构地区：[1]贵州大学林学院,贵州贵阳550025

出　　处：《贵州农业科学》2014年第9期109-111,共3页Guizhou Agricultural Sciences

基　　金：贵州省农业科技攻关项目"高山常绿杜鹃菌根技术研究"[黔科合NY字(2011)3076]

摘　　要：为探明雷山杜鹃菌根的形态结构特征及在自然生境中菌根真菌的侵染率,以野生雷山杜鹃根系为试验材料,采用酸性品红染色压片法,对其春季和秋季的菌根形态及侵染情况进行初步研究。结果表明:雷山杜鹃根系表面被念珠状菌丝和有隔菌丝覆盖,未发现外生菌丝侵入根系细胞;根系细胞内存在典型杜鹃花类菌根(ERM)结构——菌丝结;菌丝只在沿根系细胞壁分布的特殊细胞内贯穿分布。雷山杜鹃菌根真菌侵染率春季(75%)高于秋季(54%)。The mycorrhiza morphology and fungus infection rate of wild R.leishanicum root system were studied in Spring and Autumn by the acid fuchsin method to explore the morphological structure characteristics and fungus infected rate in the natural habitat.The results showed that the surface of R.leishanicum root system is covered with monilioid hyphae and septate hypha without exogenous-hyphae;there is a typical ERM structure-hyphal knot in cells of the root system, and hyphae are distributed in the special cells along cell wall of the root system. The fungus infection rate of R.leishanicum mycorrhiza in Spring and Autumn is 75% and 54% separately.

关 键 词：雷山杜鹃 菌根 显微结构 菌根真菌 侵染率 

分 类 号：S154.3[农业科学—土壤学]