<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>In Georgia, pecans are commercially grown in the Piedmont and Coastal Plain ecoregions which are characterized by sandy-loam, sandy, and/or clay soils. If well-drained, these soils are suitable for pecan production, but the soil characteristics differ enough between ecoregions in which the plant-parasitic nematode (PPN) communities could differ substantially. We studied PPN communities in pecan orchards to evaluate the potential for ecoregion differences. In total, 11 genera (<italic>Helicotylenchus</italic>, <italic>Hemicycliophora</italic>, <italic>Heterodera</italic>, <italic>Hoplolaimus</italic>, <italic>Meloidogyne</italic>, <italic>Mesocriconema</italic>, <italic>Pratylenchus</italic>, <italic>Paratylenchus</italic>, <italic>Paratrichodorus</italic>, <italic>Tylenchorhynchs</italic>, <italic>Xiphenema</italic>) were recovered from pecan orchards in the Piedmont and Coastal Plain ecoregions. However, Non-Metric Multi-Dimensional Scaling ordination, Multi-Rank Permutation Procedure, and Indicator Species Analyses indicated that the pecan PPN communities strongly differed between ecoregions and that different genera were strongly associated with different ecoregions. For 9 of the 11 PPN genera, the maximum counts occurred in Coastal Plain locations, suggesting that the well-drained sandy soils of the Coastal Plain and comparatively ill-drained red clay soils of the Piedmont may be conducive and unfavorable for movement/reproduction of PPNs, respectively.</p>
</abstract>

In Georgia, pecans are commercially grown in the Piedmont and Coastal Plain ecoregions which are characterized by sandy-loam, sandy, and/or clay soils. If well-drained, these soils are suitable for pecan production, but the soil characteristics differ enough between ecoregions in which the plant-parasitic nematode (PPN) communities could differ substantially. We studied PPN communities in pecan orchards to evaluate the potential for ecoregion differences. In total, 11 genera (Helicotylenchus, Hemicycliophora, Heterodera, Hoplolaimus, Meloidogyne, Mesocriconema, Pratylenchus, Paratylenchus, Paratrichodorus, Tylenchorhynchs, Xiphenema) were recovered from pecan orchards in the Piedmont and Coastal Plain ecoregions. However, Non-Metric Multi-Dimensional Scaling ordination, Multi-Rank Permutation Procedure, and Indicator Species Analyses indicated that the pecan PPN communities strongly differed between ecoregions and that different genera were strongly associated with different ecoregions. For 9 of the 11 PPN genera, the maximum counts occurred in Coastal Plain locations, suggesting that the well-drained sandy soils of the Coastal Plain and comparatively ill-drained red clay soils of the Piedmont may be conducive and unfavorable for movement/reproduction of PPNs, respectively.

<article-title xml:lang="en">Differences in distribution and community structure of plant-parasitic nematodes in pecan orchards between two ecoregions of Georgia

Journal of Nematology

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

Differences in distribution and community structure of plant-parasitic nematodes in pecan orchards between two ecoregions of Georgia

In Georgia, pecans are commercially grown in the Piedmont and Coastal Plain ecoregions which are characterized by sandy-loam, sandy, and/or clay soils. If...

Differences in distribution and community structure of plant-parasitic nematodes in pecan orchards between two ecoregions of Georgia

Publié en ligne: 07 sept. 2021

Pages: 1 - 14

DOI: https://doi.org/10.21307/jofnem-2021-075

Mots clés
Ecology, Host-parasite relationship, Multivariate analyses, Non-metric multi-dimensional analyses

© 2021 Ganpati B. Jagdale et al., published by Sciendo.

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

Differences in distribution and community structure of plant-parasitic nematodes in pecan orchards between two ecoregions of Georgia

Publié en ligne: 07 sept. 2021

Pages: 1 - 14

DOI: https://doi.org/10.21307/jofnem-2021-075

Mots clésEcology, Host-parasite relationship, Multivariate analyses, Non-metric multi-dimensional analyses

© 2021 Ganpati B. Jagdale et al., published by Sciendo.

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

Mots clés
Ecology, Host-parasite relationship, Multivariate analyses, Non-metric multi-dimensional analyses