Influence of low temperature on development of Meloidogyne incognita and M. hapla eggs in egg masses.
Egg masses of Meloidogyne incognita and M. hapla were placed in soil at 10, 12, 16, and 20 C. At regular intervals, eggs from samples of egg masses were released from the gelatinous matrices and their developmental stages recorded. The number of days necessary to complete each stage from gastrulation to hatch is given for each temperature. The minimal temperature threshold for the development of eggs was computed by linear regression to be 8.26 C for M. incognita and 6.74 C for M. hapla.
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North Carolina Agricultural Experiment Station, Raleigh, NC 27607, USA.
Barker
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