Record Details

Title:
Variability in reproduction of four races of Meloidogyne incognita on two cultivars of soybean
Publication date:
1984
Summary:
Variability in the reproduction of the four races of Meloidogyne incognita on the soybean cultivars Pickett 71 and Centennial was studied. Analysis of variance in the number of eggs produced by the races 6 weeks after the plants had been inoculated with 5,000 eggs of each race revealed that the nematode race by soybean cultivar interaction was highly significant (P = 0.001). Races 1, 3 and 4 produced from about 5,000 to 15,000 eggs per root system on Pickett 71 and only from about 300 to 600 eggs per root system on Centennial. In contrast, race 2 produced about 8,000 eggs per root system on Centennial and about 1,200 eggs per root system on Pickett 71. In a second experiment, in which the plants were inoculated with 2,000 second-stage juveniles, races 1 and 2 produced about 13,000 and 3,000 eggs per root system, respectively, on Pickett 71 and about 600 and 10,000 eggs per root system, respectively, on Centennial. The results suggest that M. incognita resistance in soybean is race-specific. [AS/SS]
Call number:
A:PS
Journal citation:
Contact information:
harvest@worldveg.org

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 Record created 1985-06-03, last modified 2019-03-04


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