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

<p>Weeds can be hosting and alternative multipliers of root-knot nematodes (<italic>Meloidogyne</italic> spp.). Among the main weeds, species of the genus <italic>Ipomoea</italic> stands out for their cosmopolitan presence and the negative impact on crops. In addition, they can behave as hosts and promote the reproduction of pests, diseases, and nematodes. However, the ability of Meloidogyne nematodes to infect morning-glory (<italic>Ipomoea</italic> spp.) is little understood. In this context, the objective was to evaluate the reproduction of <italic>M. arenaria</italic>, <italic>M. enterolobii</italic>, <italic>M. ethiopica</italic>, <italic>M. hapla</italic>, <italic>M. incognita</italic>, <italic>M. javanica</italic>, <italic>M. luci</italic>, and <italic>M. morocciensis</italic> in <italic>I. grandifolia</italic>, <italic>I. hederifolia</italic>, <italic>I. nil</italic>, <italic>I. purpurea</italic>, and <italic>I. quamoclit.</italic> Plants were individually inoculated with 5,000 eggs and second-stage juveniles and kept in a greenhouse for 60 days. The design was completely randomized with six repetitions. After this period, the root system of each plant was evaluated to gall index (IG) and reproduction factor (RF). It was verified that the eight species of <italic>Melodoigyne</italic> have the capacity to parasitize <italic>I. grandifolia</italic>, <italic>I. hederifolia</italic>, <italic>I. nil</italic>, <italic>I. purpurea</italic>, and <italic>I. quamoclit</italic>, showing the susceptibility of these weeds to the plant-parasitic nematodes. The highest RF were observed for <italic>M. enterolobii</italic> with values of 12.5 and 12.9 for <italic>I. quamoclit</italic> and <italic>I. hederifolia</italic>, respectively. While <italic>M. arenaria</italic> obtained the lowest values, with RF ≤ 4.0 for all species of <italic>Ipomoea</italic>. Thus, weed species of the <italic>Ipomoea</italic> genus are potential hosts and multipliers of root-knot nematodes, making it important to be considered in integrated management strategies for these plant-parasitic nematodes.</p>
</abstract>

Weeds can be hosting and alternative multipliers of root-knot nematodes (Meloidogyne spp.). Among the main weeds, species of the genus Ipomoea stands out for their cosmopolitan presence and the negative impact on crops. In addition, they can behave as hosts and promote the reproduction of pests, diseases, and nematodes. However, the ability of Meloidogyne nematodes to infect morning-glory (Ipomoea spp.) is little understood. In this context, the objective was to evaluate the reproduction of M. arenaria, M. enterolobii, M. ethiopica, M. hapla, M. incognita, M. javanica, M. luci, and M. morocciensis in I. grandifolia, I. hederifolia, I. nil, I. purpurea, and I. quamoclit. Plants were individually inoculated with 5,000 eggs and second-stage juveniles and kept in a greenhouse for 60 days. The design was completely randomized with six repetitions. After this period, the root system of each plant was evaluated to gall index (IG) and reproduction factor (RF). It was verified that the eight species of Melodoigyne have the capacity to parasitize I. grandifolia, I. hederifolia, I. nil, I. purpurea, and I. quamoclit, showing the susceptibility of these weeds to the plant-parasitic nematodes. The highest RF were observed for M. enterolobii with values of 12.5 and 12.9 for I. quamoclit and I. hederifolia, respectively. While M. arenaria obtained the lowest values, with RF ≤ 4.0 for all species of Ipomoea. Thus, weed species of the Ipomoea genus are potential hosts and multipliers of root-knot nematodes, making it important to be considered in integrated management strategies for these plant-parasitic nematodes.

<article-title xml:lang="en">Host status of morning-glory (<italic>Ipomoea</italic> spp.) to <italic>Meloidogyne</italic> species

Journal of Nematology

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

Host status of morning-glory ( spp.) to  species

Weeds can be hosting and alternative multipliers of root-knot nematodes (Meloidogyne spp.). Among the main weeds, species of the genus Ipomoea stands out for...

Species	M. arenaria	M. enterolobii	M. ethiopica	M. hapla	M. incognita	M. javanica	M. luci	M. morocciensis
Galls index ^a
I. grandifolia	5.0 ns	5.0 ns	5.0 ns	5.0 ns	5.0 ns	5.0 ns	5.0 ns	5.0 ns
I. hederifolia	5.0	5.0	5.0	4.5	5.0	5.0	5.0	5.0
I. nil	4.5	5.0	5.0	5.0	5.0	5.0	5.0	5.0
I. purpurea	4.5	5.0	5.0	5.0	5.0	5.0	5.0	5.0
I. quamoclit	5.0	5.0	5.0	5.0	5.0	5.0	4.5	5.0
S. licopersycum	5.0	5.0	5.0	5.0	5.0	5.0	5.0	5.0
Reproduction factor ^c
I. grandifolia	2.7 B c	10.4 B a	8.6 A a	5.5 A c	6.8 B b	9.7 A a^c	8.5 A a	6.1 A b
I. hederifolia	3.4 A c	12.5 A a	10.1 A a	3.0 B c	9.0 A a	6.1 B b	9.1 A a	6.5 A b
I. nil	3.3 B c	9.8 B a	7.1 B b	5.2 A b	5.7 B b	7.8 B b	9.3 A a	4.9 B b
I. purpurea	3.8 A c	11.0 B a	7.6 B b	4.7 A c	7.8 A b	8.9 A b	6.7 B b	5.5 A c
I. quamoclit	4.0 A c	12.9 A a	9.7 A b	3.2 B c	8.9 A b	6.7 B b	3.6 C c	4.5 B c
S. licopersycum	28.8	35.68	25.57	19.4	21.6	24.5	36.7	45.5
CV (%)	25.56

Host status of morning-glory (Ipomoea spp.) to Meloidogyne species

Pubblicato online: 01 gen 2021

Pagine: 1 - 6

DOI: https://doi.org/10.21307/jofnem-2021-018

Parole chiave
Weeds, Root-knot nematode, spp., Reproduction, Susceptibility

© 2021 Authors, published by Sciendo.

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

Figure 1:

Galls index (GI), and factor of reproduction (RF) of M. arenaria, M. enterolobii, M. ethiopica, M. hapla, M. incognita, M. javanica, M. luci, and M. morocciensis in I. grandifolia, I. hederifolia, I. nil, I. purpurea, and I. quamoclit.

Host status of morning-glory (Ipomoea spp.) to Meloidogyne species

Pubblicato online: 01 gen 2021

Pagine: 1 - 6

DOI: https://doi.org/10.21307/jofnem-2021-018

Parole chiaveWeeds, Root-knot nematode, spp., Reproduction, Susceptibility

© 2021 Authors, published by Sciendo.

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

Figure 1:

Galls index (GI), and factor of reproduction (RF) of M. arenaria, M. enterolobii, M. ethiopica, M. hapla, M. incognita, M. javanica, M. luci, and M. morocciensis in I. grandifolia, I. hederifolia, I. nil, I. purpurea, and I. quamoclit.

Parole chiave
Weeds, Root-knot nematode, spp., Reproduction, Susceptibility