<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Root-knot nematodes in the genus <italic>Meloidogyne</italic> are an important group of plant-parasitic nematodes causing severe damage on agricultural crops worldwide. A study was conducted to identify the species of root-knot nematodes causing damage on honeybush monocultures and to assess the seasonal variations in the nematode population. Soil samples were collected from six experimental sites in Genadendal, Western Cape province of South Africa from 2016 to 2017. DNA was extracted from single-second stage juveniles and species identifi cation was done using species-specifi c sequence-characterised amplifi ed regions (SCAR) primers. <italic>Meloidogyne hapla</italic> and <italic>M. javanica</italic> were identifi ed from the sites. Mean population density of the nematodes varied significantly (p &lt; 0.05) in the six sites, with the peak population being recorded in summer of 2017. The study suggests that seasonal variation in temperature and moisture could contribute to changes in the population density of root-knot nematodes in the soil.</p></abstract>

Root-knot nematodes in the genus Meloidogyne are an important group of plant-parasitic nematodes causing severe damage on agricultural crops worldwide. A study was conducted to identify the species of root-knot nematodes causing damage on honeybush monocultures and to assess the seasonal variations in the nematode population. Soil samples were collected from six experimental sites in Genadendal, Western Cape province of South Africa from 2016 to 2017. DNA was extracted from single-second stage juveniles and species identifi cation was done using species-specifi c sequence-characterised amplifi ed regions (SCAR) primers. Meloidogyne hapla and M. javanica were identifi ed from the sites. Mean population density of the nematodes varied significantly (p < 0.05) in the six sites, with the peak population being recorded in summer of 2017. The study suggests that seasonal variation in temperature and moisture could contribute to changes in the population density of root-knot nematodes in the soil.

Occurrence and seasonal changes in the population of root-knot nematodes on honeybush (<italic>Cyclopia</italic> sp.)

Helminthologia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Occurrence and seasonal changes in the population of root-knot nematodes on honeybush ( sp.)

Root-knot nematodes in the genus Meloidogyne are an important group of plant-parasitic nematodes causing severe damage on agricultural crops worldwide. A study...

Occurrence and seasonal changes in the population of root-knot nematodes on honeybush (Cyclopia sp.)

Publié en ligne: 08 juin 2021

Pages: 202 - 212

Reçu: 07 juil. 2020

Accepté: 24 févr. 2021

DOI: https://doi.org/10.2478/helm-2021-0018

Mots clés
population density, root-knot nematodes, seasonal fluctuation

© 2021 F. Y. Daramola, R. Malgas, A. P. Malan, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Occurrence and seasonal changes in the population of root-knot nematodes on honeybush (Cyclopia sp.)

Publié en ligne: 08 juin 2021

Pages: 202 - 212

Reçu: 07 juil. 2020

Accepté: 24 févr. 2021

DOI: https://doi.org/10.2478/helm-2021-0018

Mots cléspopulation density, root-knot nematodes, seasonal fluctuation

© 2021 F. Y. Daramola, R. Malgas, A. P. Malan, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
population density, root-knot nematodes, seasonal fluctuation