INFLUENCE OF PHOTOPERIOD AND TEMPERATURE ON MIGRATIONS OF MELOIDOGYNE JUVENILES

  • 1 January 1981
    • journal article
    • research article
    • Vol. 13  (2) , 217-220
Abstract
Photoperiod influences the migration of M. incognita juveniles toward tomato roots. Approximately 33% migrated vertically 20 cm in 7 days to roots when 12 h dark were alternated with 12 h light. Only 7% migrated when light was constant for 24 h. Vertical migration of M. incognita juveniles was studied at 14, 16, 18, 20 and 22 C. The migration of M. incognita juveniles begins at about 18 C and reaches its maximum of 22 C. The migration of M. hapla and M. incognita juveniles was compared at 14, 18 and 22 C. Juveniles of M. hapla migrated at a lower temperature than those of M. incognita. With M. hapla there was no significant difference in migration between 18 and 22 C.

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