Abstract:

To investigate the possibility of using arbuscular mycorrhizal fungi on tuber crops culture, experiments were conducted with cassava as test crop to screen the advantageous fungi and to study the effects of AM fungi on the infection rate and the growth of cassava. The effects of AM fungi, including Glomus intraradices (Gi), G. manihotis (Gm) and Acaulospora tuberculata (At), on the growth of cassava by the pot culture method with single inoculum treatments and mixed inocula treatments were studied. The results showed that there was higher infective frequency and the growth of plant and the absorption of phosphorus in stem were improved by inoculating Gm in single inoculum treatments. The effects on the growth of cassava by inoculating Gi and At were not obvious. In general, the effects of mixed inoculua treatments of Gi and Gm (2G) or 2G+At were better than single inoculum, treatments, especially in biomass accumulation by inoculating 2G and infection intensity by inoculating 2G+At. The experimental results revealed that incoculation with AM fungi made positive contributions to improve the yield of cassava.