Investigation of Root-knot Nematodes in East China

The fauna of the root knot nematodes was investigated from 104 samples in six provinces of East China. The root knot nematodes on 65 species of host plants were identified as Meloidogyne incognita, M.arenaria and M.javanica by the perineal patterns and the esterase isozymes. The occurrence frequencies of them were 88%, 4% and 8%, respectively. M.incognita was the most common species. 26 of the 65 host plants were recorded for the first time in China. The results of investigation can be used as reference to work out a control scheme of the root knot nematodes in this region.