Niblack T L, Bernard E C
J Nematol. 1985 Apr;17(2):132-9.
Nursery blocks (48 dogwood, 27 red maple, and 17 peach) distributed among 20 Tennessee nurseries were sampled for nematodes in March, July, and October 1981. Plant-parasitic nematodes were extracted from soil, counted by genera, and identified to species after fixation. A total of 57 species in 24 genera were found, with 1-16 species occurring in a site. The species most commonly detected were Paratylenchus projectus and Xiphinema americanum, which were found in 88% and 78% of the sites, respectively. Relationships existed between distribution and densities of some species present in more than 10% of the sites and certain soil factors (pH, bulk density, texture, and organic matter content). Plant-parasitic nematode community diversity was related to tree age, percentage of weed ground cover, and number of weed species. Site similarities in community ordinations were dependent on the individual nurseries sampled, tree age, and soil type, but clusters of sites of similar tree ages and soil types were not exclusive.
1981年3月、7月和10月，对田纳西州20家苗圃中分发的苗木块（48株山茱萸、27株红枫和17株桃树）进行了线虫采样。从土壤中提取植物寄生线虫，按属计数，并在固定后鉴定到种。共发现24个属的57个种，一个地点出现1至16个种。最常检测到的种是突出拟盘旋线虫和美洲剑线虫，分别在88%和78%的地点发现。在超过10%的地点出现的一些种的分布和密度与某些土壤因素（pH值、容重、质地和有机质含量）之间存在关联。植物寄生线虫群落多样性与树龄、杂草地面覆盖百分比和杂草种类数量有关。群落排序中的地点相似性取决于所采样的各个苗圃、树龄和土壤类型，但相似树龄和土壤类型的地点集群并非相互排斥。
