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Meloidogyne floridensis has a unique virulence profile against root-knot nematode resistant and susceptible pepper (Capsicum annuum) lines Cover

Meloidogyne floridensis has a unique virulence profile against root-knot nematode resistant and susceptible pepper (Capsicum annuum) lines

Journal of Nematology
Volume 57 (2025): Issue 1 (February 2025)
By:
Open Access
|Mar 2025

Figures & Tables

Figure 1:

Reproduction of Meloidogyne floridensis on pepper genotypes in the growth chamber experiment conducted at Clemson University. Data represent the distribution of four replications. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data.
Reproduction of Meloidogyne floridensis on pepper genotypes in the growth chamber experiment conducted at Clemson University. Data represent the distribution of four replications. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data.

Figure 2:

Reproduction of Meloidogyne floridensis on pepper genotypes in the first greenhouse experiment conducted at Clemson University. Data represent the distribution of four replications. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’.
Reproduction of Meloidogyne floridensis on pepper genotypes in the first greenhouse experiment conducted at Clemson University. Data represent the distribution of four replications. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’.

Figure 3:

Reproduction of Meloidogyne floridensis on pepper genotypes in the first greenhouse experiment conducted at the USDA. Data represent the distribution of ten replications unless otherwise noted*. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’. *Due to low seed germination two lines had less than ten replicates PA 136 had four replicates and CW had six replicates.
Reproduction of Meloidogyne floridensis on pepper genotypes in the first greenhouse experiment conducted at the USDA. Data represent the distribution of ten replications unless otherwise noted*. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’. *Due to low seed germination two lines had less than ten replicates PA 136 had four replicates and CW had six replicates.

Figure 4:

Root galling caused by Meloidogyne floridensis on pepper genotypes in the growth chamber experiment. Data represent the distribution of four replications. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’.
Root galling caused by Meloidogyne floridensis on pepper genotypes in the growth chamber experiment. Data represent the distribution of four replications. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’.

Figure 5:

Root galling caused by Meloidogyne floridensis on pepper genotypes in the first greenhouse experiment conducted at Clemson University. Data represent the distribution of four replications. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’.
Root galling caused by Meloidogyne floridensis on pepper genotypes in the first greenhouse experiment conducted at Clemson University. Data represent the distribution of four replications. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’.

Figure 6:

Root galling caused by Meloidogyne floridensis on pepper genotypes in the first greenhouse experiment conducted at the USDA. Data represent the distribution of ten replications unless otherwise noted*. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’. *Due to low seed germination two lines had less than ten replicates PA 136 had four replicates and CW had six replicates.
Root galling caused by Meloidogyne floridensis on pepper genotypes in the first greenhouse experiment conducted at the USDA. Data represent the distribution of ten replications unless otherwise noted*. Tukey style box and whisker plots are presented with individual dot points representing scores from individual plants. Treatments sharing a common letter are not significantly different according to Student's t-test (P ≤ 0.05). The middle crossbar represents the median, the outer crossbars represent the 25th and 75th quartiles and the whiskers represent 3/2 times the interquartile range of the data. CW refers to cultivar ‘Carolina Wonder’. *Due to low seed germination two lines had less than ten replicates PA 136 had four replicates and CW had six replicates.

Pepper genotypes and their corresponding gene(s) for resistance employed in the current study_

Pepper genotypeKnown RKN resistance gene(s)Reference
‘Charleston Belle’NFery et al., 1998
HDA 149Me3Djian-Caporalino et al., 2007
HDA 330Me1Djian-Caporalino et al, 2007
PM 217Me1, Me2Djian-Caporalino et al., 2007; Berthou et al., 2003
PM 687Me3, Me4Djian-Caporalino et al., 2007
PA 136NoneDukes et al., 1992
‘Carolina Wonder’ (CW)NFery et al., 1998
CW X PA136, F1 HybridNThis study
DOI: https://doi.org/10.2478/jofnem-2025-0007 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
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Language: English
Submitted on: Dec 23, 2024
Published on: Mar 14, 2025
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 times per year
Keywords:
host resistance,
root-knot nematode,
pepper
Related subjects:
Life sciences,
Life sciences, other

© 2025 C Khanal, W Rutter, M. S Alam, I. Alarcon-Mendoza, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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