| College of Life Sciences Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100, China |
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| DOI：10.7606/j.issn.1000-7601.2006.03.45 |
| Key Words: AM fungi Puerraria lobata spatial distribution shaanxi province |
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| Abstract: |
| Through analyzing soil samples collected in a field at Shaanxi Wugong,the response of AM fungi to plant breeds and its biotic environment were compared in this paper.Soil samples were collected from 0～10,10～20,20～30 and 30～40 cm depth soil layers in the rhizosphere of 3 breeds CaiGe,YaoGe and FenGe.The result indicated that different plant breeds and different soil layers significantly affected AM fungi colonization and spatial distribution.Different breeds of the plant had different colonization.Total colonization rate and vesicle,hypha colonization rate of CaiGe were 98.85%,82.79%,95.96%,separately,which was higher than that of YaoGe and FenGe.Arbuscule colonization of FenGe was significantly higher than that of YaoGe,spore density of YaoGe was 7.95 fungi/g soil,significantly higher than that of CaiGe and FenGe.The highest spore density,hypha colonization and arbuscule colonization occurred in 0～10 cm soil layer.The maximum value of the vesicle colonization appeared in 10～20 cm soil layer.Soil Organic matter had significantly positive effect on arbuscule colonization rate.Soil pH value had a significant negative correlation with total colonization rate and hypha colonization rate.Most of AM fungi in the soil sample belonged to Glomus,a few of species belonged to Acaulospora and Scutellospora.The concrete type need to be identified further. |
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