Effect of Radopholus similis, Pratylenchus araucensis, Meloidogyne spp. and their interaction on Musa AAB ‘Dominico Hartón’ seedlings

Author:

Guzmán-Piedrahita O. A.1,Zamorano-Montañez C.1,Leguizamon-Caycedo J.2,Castro-Caicedo B. L.3,Lopez-Nicora H. D.4

Affiliation:

1. Programa de Doctorado en Ciencias Agrarias , Universidad de Caldas , Manizales , Caldas , Colombia

2. Principal researcher in Plant Pathology at Cenicafe , Chinchiná , Colombia , retired

3. Scientific researcher II in Plant Pathology at Cenicafe , Chinchiná , Colombia , retired

4. Department of Plant Pathology , The Ohio State University , Columbus , OH , USA

Abstract

Abstract The effect of Radopholus similis, Pratylenchus araucensis, Meloidogyne spp., and their interaction was evaluated in seedlings of Musa AAB ‘Dominico Hartón’. The study was conducted in a nursery in Palestina, Caldas department, Colombia. Forty-day-old plantain seedlings were infected separately with 750, 1,500, 2,250 and 3,000 of each species of nematodes/plant. Two experiments were conducted to evaluate the damage of R. similis, P. araucensis, Meloidogyne spp. and the mixture of 750 R. similis + 750 P. araucensis + 750 Meloidogyne spp. compared with the mixture of different proportions (1,500, 2,250 and 3,000 of each species of nematodes). Noninfected plants were included as a control treatment, for a total of 17 treatments in a randomized complete block design with ten replications. Twelve weeks after inoculation, all nematodes, both alone and in combination, reduced (p < 0.05) plantain dry root and shoot weight. In two experiments, R. similis, P. araucensis, and Meloidogyne spp. alone, each with a population density of 3,000, reduced (p < 0.05) root dry weight by 32.5%, 9.5% and 49%, respectively, and decreased (p < 0.05) shoot dry weight by 21.5%, 23%, and 31.5%, respectively, compared to the control. The interaction of nematodes with the lowest population decreased root (33%) and shoot (21%) weight. We conclude that the growth of ‘Dominico Hartón’ seedlings was affected by plant-parasitic nematodes, but the greatest damage occurred with concomitant nematode infection.

Publisher

Walter de Gruyter GmbH

Reference38 articles.

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