Effect of some biotic and abiotic factors on the stabllity of esterase of Meloidogyne incognita and Meloidogyne javanica

The stability of isozymes of b-esterase from single female of Meloidogyne incognita and Meloidogyne javanica under direrent environmental conditions were studied. Polyacrylamide gel electrophoresis analysis reveal that the isozyme pattern of these two root-knot nematode species remain constant irrespective of host nutrition, age of female, seasonal temperature, though there were some variations in the appearance of minor bands. The isozyme pattern of b-esterase found to be one in the case of M. incognita and three for M. javanica.