报道了广东省车八岭国家级自然保护区苗圃中观光木（Ｔｓｏｏｎｇｉｏｄｅｎｄｒｏｎ ｏｄｏｒｕｍ）、伞花木（Ｅｕｒｙｃｏｒｍｂｕｓ ｃａｖａｌｅｒｉｅｉ）和伯乐树（Ｂｒｅｔｓｃｈｎｉｅｄｅｒａ ｓｉｎｅｎｓｉｓ）等３种国家二级保护苗木的菌根特点和根际土ＶＡ菌根孢子的主要类型。结果显示，３种植物均可与真全枝－泡囊型菌根（ｖｅｓｉｃｕｌａｒ－ａｒｂｕｓｃｕｌａｒ ｍｙｃｏｒｒｈｉｚａ），菌根感染率分别为８
Root morphology and mycorrhizas of the 3 year old saplings of Tsoongiodendron odorum, Bretschneidera sinensis, and Eurycormbus cavaleriei at the nursery of Chebaling National Nature Reserve were studied. Three species could form vesicular arbuscular mycorrhizas. Their infection rates were 84.4%, 81.1%,55.6%, respectively. These species are different in root morphology, but all of them do not have root hair, which may indicate their high dependence on mycorrhiza. The VAF spore density was low in the soil of the study site. One spore type was isolated from the soil of Eurycormbus cavaleriei and two types were from that of Bretschneidera sinensis . Further study on the ecology of the mycorrhizas of these protected species is of importance in conservation and development of these rare plants.