Author(s):
Gomes da Costa, Joao Pedro [UNESP] ; Martins Soares, Pedro Luiz [UNESP] ; Vidal, Roberta Luiza ; Nascimento, Daniel Dalvan do [UNESP] ; Ferreira, Rivanildo Junior [UNESP]
Date: 2019
Persistent ID: http://hdl.handle.net/11449/186064
Origin: Oasisbr
Subject(s): Phaseolus vulgaris; genetic resistance; root-knot nematode; integrated nematode management; Phaseolus vulgaris; Phaseolus vulgaris; genetic resistance; genetic resistance; root-knot nematode; root-knot nematode; integrated nematode management; integrated nematode management
Description
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The production of common bean (Phaseolus vulgaris L.) may be compromised by a variety of pests and diseases, with root-knot nematodes standing out among the soil-borne pathogens that cause significant losses. It was assessed the reaction of common bean genotypes to the reproduction of these nematodes, with emphasis on the two species most frequently found parasitizing the crop: Meloidogyne javanica and Meloidogne incognita. The experiments were conducted in a greenhouse, using a completely randomized design, with 26 treatments (genotypes), ten replications and plot consisting of a pot containing one plant. Each plot was inoculated with 1,000 eggs and second-stage juveniles and assessed at 62 days after the inoculation, when the final populations were estimated. The genotypic resistance was determined based on two criteria: reproduction factor and index. All the genotypes were susceptible to M. incognita according to both assessment criteria. The IAC Alvorada, IAC Imperador, BRS Esplendor and BRS Esteio cultivars, although may be classified as resistant to M. javanica by the reproduction factor, are classified only as moderately resistant if the assessment criterion is the reproduction index.
Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Fitossanidade, Lab Nematol, Jaboticabal, SP, Brazil
Univ Sao Paulo, Dept Genet, Escola Super Agr Luiz de Queiroz, Piracicaba, SP, Brazil
Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Fitossanidade, Lab Nematol, Jaboticabal, SP, Brazil
