Effects of Propagation Condition on Growth and Development of Arbuscular Mycorrhizal Fungi in the Rhizosphere of Caragana korshinskii

The effects of different host plants(Zea mays L.and Trifolium repens L.)and culture substrates(the mass ratio of sand to soil was 1∶1,2∶1 and 3∶1,respectively)on growth and development of arbuscular mycorrhizal(AM)fungi in the rhizosphere of Caragana korshinskii were studied using pot experiment.The results showed that mycorrhizal colonization,spore density,succinate dehydrogenase activity of intraradical hypha and mycorrhizal length were the highest when the host plant was Zea mays under the substrate(mass ratio of sand to soil was 3∶1).Therefore,Zea mays as host plant and culture substrate(mass ratio of sand to soil was 3∶1)were the best for the growth and development of indigenous AM fungi in the rhizosphere of C.korshinskii.