Ecological Distribution of Arbuscular mycorrhizal Fungi on Wild Plants in Different Vegetation Regions of Shandong

Abstract

Abstract: Resources and ecological distribution of Arbuscular mycorrhizal fungi(AMF) on wild plants in Shandong vegetation region were investigated during 1995-1997. Atotal of 182 rhizospheric soil samples were collected from 50 wild plants. Spores of AMF occurred in all samples. More than fourty species of AMF were isolated and 35 species in five genera were identified. Among the five genera,the frenquency of occurence was Glomus(51.7%)> Scutellospora(23.1)> Gigaspora(14.1%)>Acaulospora(9.5%)>Entrophospora (0.8%). Glomus mosseae, Gigaspora margarita are prominent species, G.versiforme, G.constrictum, S.gilmorei are common species to be isolated. The spore density of AMF was different: Gigaspora>Glomus>Scutellospora>Acaulospora>Entrophospora . The occurence and distribution of AMF are related to regional difference, soil factors(contents of N, P; organic matter and pH) and host plant.The prominent species in eastern part were Gi.margarita, G.mosseae and G.versiforme , while in middle and western part of Shandong province was G.mosseae . The occurence frequency of Glomus, Gigaspora and Scutellospora was much higher than that of other genera in eastern and middle part of Shandong province. While Glomus and Acaulospora were higher in the western part. The spore number of Gigaspora and Scutellospora were much more than that of other genera in the samples collected in the eastern and middle area, while Glomus and Acaulospora are more frequently encountered in the western part of Shandong provence.

Key words: rice, yield, yield component, meteorological factor.

Gai Jingping, Liu Runjin, Li Xiaolin. Ecological Distribution of Arbuscular mycorrhizal Fungi on Wild Plants in Different Vegetation Regions of Shandong[J]. cje, 2000, (4): 18-22.

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