POST-INFECTIONAL DEVELOPMENT OF MELOIDOGYNE-INCOGNITA ON SUSCEPTIBLE AND RESISTANT SOYBEAN GENOTYPES

Post-infectional development, reproduction, and fecundity of Meloidogy ne incognita on three soybean genotypes were examined under greenhouse conditions. The genotypes Bossier, Forrest, and PI 96354 were suscept ible, partially resistant, and highly resistant, respectively, to M. i ncognita. Most second-stage juveniles in roots of Forrest and PI 96354 had emigrated from roots of these genotypes by 10 days after inoculat ion. Nematodes parasitizing PI 96354 had the slowest developmental rat e and produced 99% fewer eggs per egg mass than females on the other t wo genotypes. Total eggs produced on Forrest was intermediate between egg production on Bossier and PI 96354.