Host suitability and response of asparagus cultivars to meloidogyne species and races
Related Experiment Video
Updated: Jun 24, 2026
A Contrast of Three Inoculation Techniques used to Determine the Race of Unknown Fusarium oxysporum f.sp. niveum Isolates
Published on: October 28, 2021
Abstract:
The host-parasite relationships of asparagus and Meloidogyne spp. were examined under greenhouse and microplot conditions. Meloidogyne species and races differed greatly in their ability to reproduce on asparagus seedlings. Meloidogyne hapla generally failed to reproduce, and M. javanica, M. arenaria race 1, and M. incognita race 3 reproduced poorly, with a reproduction factor (Rf = final population/initial population) usually < 1.0. Only M. arenaria race 2 and M. incognita races 1 and 4 reproduced consistently on all asparagus cultivars tested (Rf typically 1-11). No effect of M. incognita race 4 on host growth was detected. Meloidogyne arenaria race 2 and M. incognita race 1 had slight negative effects (5-10%) on plant and root growth.
Insights
Certain Meloidogyne (root-knot nematode) species and races reproduce on asparagus, impacting plant growth. Understanding these host-parasite dynamics is crucial for asparagus cultivation and nematode management.
Area of Science:
- Plant Pathology
- Nematology
- Horticultural Science
Background:
- Asparagus (Asparagus officinalis) is susceptible to various plant-parasitic nematodes.
- Root-knot nematodes (Meloidogyne spp.) are significant pests causing substantial crop losses worldwide.
- Understanding specific host-parasite interactions is vital for effective crop management.
Purpose of the Study:
- To investigate the reproductive compatibility and pathogenicity of different Meloidogyne species and races on asparagus cultivars.
- To identify which Meloidogyne populations pose the greatest threat to asparagus production.
Main Methods:
- Greenhouse and microplot experiments were conducted to assess nematode reproduction.
- Various Meloidogyne species and races were inoculated onto asparagus seedlings.
- Nematode reproduction factor (Rf) and effects on plant and root growth were quantified.
Main Results:
- Meloidogyne hapla, M. javanica, M. arenaria race 1, and M. incognita race 3 showed poor reproduction on asparagus (Rf < 1.0).
- M. arenaria race 2 and M. incognita races 1 and 4 demonstrated consistent reproduction across all tested asparagus cultivars (Rf typically 1-11).
- M. arenaria race 2 and M. incognita race 1 caused slight negative effects (5-10%) on plant and root growth, while M. incognita race 4 showed no significant growth impact.
Conclusions:
- Asparagus exhibits differential susceptibility to various Meloidogyne species and races.
- M. arenaria race 2 and M. incognita races 1 and 4 are identified as potentially damaging pests for asparagus.
- These findings inform strategies for managing root-knot nematodes in asparagus cultivation.
