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Reproduction of Meloidogyne enterolobii on selected root-knot nematode resistant sweetpotato (Ipomoea batatas) cultivars

Journal of Nematology
Volume 52 (2020): Issue 1 (January 2020)
By:
Open Access
|Jul 2020

Figures & Tables

Figure 1:

Sweetpotato cv. Hernandez infected with Meloidogyne enterolobii. (A) Symptoms induced in the storage roots 90 days after nematode inoculation; (B) Necrosis and cracks of storage roots, induced by M. enterolobii; also, noticeable galls and egg masses on fibrous roots; (C) A close up of the galls and large egg masses on both fibrous and storage roots; and (D) Close up of necrosis and cracks in storage roots.
Sweetpotato cv. Hernandez infected with Meloidogyne enterolobii. (A) Symptoms induced in the storage roots 90 days after nematode inoculation; (B) Necrosis and cracks of storage roots, induced by M. enterolobii; also, noticeable galls and egg masses on fibrous roots; (C) A close up of the galls and large egg masses on both fibrous and storage roots; and (D) Close up of necrosis and cracks in storage roots.

Response of five sweetpotato (Ipomaea batatas) cultivars to inoculation with Meloidogyne enterolobii in this study_

FactorFibrous fresh root weightu (g)Gall indexv Egg mass indexv Eggs per egg massEggs per fibrous fresh root weightEggs per gram fresh rootx RFw
Sweetpotato cultivar t
Beauregard15.21 bc4.65 a3.65 b475 a30,975 c2,668 c6.20 c
Covington14.99 bc4.25 a4.45 ab490 a84,585 b5,683 ab16.92 b
Evangeline22.70 a4.65 a4.80 a503 a150,070 a7,161 a30.01 a
Hernandez16.35 b4.70 a4.90 a462 a113,235 b6,979 a22.65 b
Orleans11.65 c1.95 b2.30 c475 a42,022 c3,678 bc8.41 c
Test
Test 115.424.244.2250481,3255,44416.27
Test 216.943.843.8245987,0305,02417.41
F probability cv< 0.001< 0.001< 0.001> 0.50< 0.001< 0.001< 0.001
F probability test0.120.060.10> 0.500.460.500.46
Tomato37.755n/ax 176,3404,80135.27
DOI: https://doi.org/10.21307/jofnem-2020-063 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
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Language: English
Page range: 1 - 6
Submitted on: Apr 20, 2020
Published on: Jul 21, 2020
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
Guava root-knot nematode,
Pacara earpod tree root-knot nematode,
Reproduction,
Root-knot nematode,
Susceptibility,
Sweetpotato
Related subjects:
Life sciences,
Life sciences, other

© 2020 Janete A. Brito, Johan Desaeger, D.W. Dickson, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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