all seeds were planted in pots containing 1000 g heat-sterilized soil.
The experiment included two main treatments of cucumber
monoculture (labeled 1) and intercropping of cucumber and
resistant plants, which are numbered sequentially as 2: castor-oil
plant/cucumber; 3: hot pepper/cucumber; 4: maize/cucumber; 5:
sudangrass/cucumber; 6: leaf mustard/cucumber; 7: crown daisy/
cucumber; 8: vicia villosa/cucumber; 9: cowpea/cucumber; 10:
sweet pepper/cucumber; 11: bupleurum/cucumber; 12: zinnia/
cucumber and 13: scutellaria baicalensis/cucumber. The ratio of
cucumber plants:screened plants was 3:3 in the intercropping
treatment and there were three cucumber plants in the monoculture
treatment. When three leaves of cucumber plants appeared,
the plants were inoculated with about 3000 J2 of M. incognita.
There were four replicates of each treatment and the pot experiment
was performed under the greenhouse conditions. Plant
samples were grown for 35 days after nematode inoculation.