9Williamson V M. Root-knot nematode resistance genes in tomato and their potential for future use. Ann Rev Phytopathol, 1998,36:277 - 293
10Sasser J N, Freekman D W. A world perspective on nematology. In:Veech J A,Dickson D W,eds. Vistas in nematology Hayetsville:Society of Nematologists, 1987.7 - 14