Root knot nematode resistance is characterized by rating the knotting on a visual scale. A greenhouse evaluation and employ numerous varieties and populations which are artificially inoculated by a chosen number of root knot nematodes. After growing the plants the washed off root systems can be rated using a visual scale that assessed the concentration of root swellings.
In a field setting susceptible varieties can be planted to created sick plots and the varietal assay can be done under field conditions.
The resistance or susceptibility can be assessed by the rate of reproduction of the nematode on different cultivars. More is the reproductive rate, more susceptible is the cultivar and vice versa.
The resistance or susceptibility can also be assessed by following scale devised by Taylor and Sasser (1978).
For detail study please read the following article
Response of selected cucumber cultivars to Meloidogyne incognita. Crop Protection 44: 13-17, 2013
Dear Muhammed.
Parameters related to plant resistance to root knot Nematode can be the Number of gall(NG), the Number of egg mass(NEG) and the NEM/NG ratio.
Best regard
- Badges
- Science topic
- Similar topics
- Entomology
- Resistance