Author(s): COSTA FILHO, J. H. da; QUEIROZ, M. A. de; CASTRO, J. M. da C. e; FONTES, L. de O.; PRESTON, H. A. F; SANTOS, T. S.; CARVALHO, N. F. de O.; SILVA, S. C. de A.; SANTOS, M. F. dos; CANDIDO, D.

Summary: Identification of resistant germplasmsis crucial for crop breeding. The aim of this study was to determine the reaction of accessions of watermelon plants to Meloidogine enterolobii using two experiments . In the first experiment, 20 accessions were evaluated, and in the second, the four most promising accessions were selected in the first experiment and two controls. Both experiments were implemented under a completely randomized design with ten replications. Each parcel consisted of a plastic pot containing autoclaved soil inoculated with 2,200 eggs of M. enterolobii. Among the variables studied, the egg number and reproduction factor showed a high positive correlation. The subsamples indicated a wide variation among and within each accession (p < 0.01). At the end, variation in the response among and within the accessions was observed regarding the reproduction factor. Of the accessions evaluated, accessions 9 and 10 exhibited potential for the implement ation of breeding programs.

Publication year: 2018

Types of publication: Journal article

Unit: Embrapa Semi-arid Region

Keywords: Acesso, Citrullus, Melancia, Melhoramento Genético Vegetal, Meloidogine enterolobii, Nematóide, Watermelons