Título:	Initial inoculum density, evaluation time, and reproduction of Meloidogyne enterolobiiin Paluma guava plants.
Autoria:	OLIVEIRA, P. G. de QUEIROZ, M. A. de LIMA NETO, I. da S. CASTRO, J. M. da C. e OLIVEIRA, R. S. de
Afiliação:	PATRÍCIA GOMES DE OLIVEIRA, UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA; MANOEL ABÍLIO DE QUEIROZ, UNIVERSIDADE DO ESTADO DA BAHIA; IZAÍAS DA SILVA LIMA NETO, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO; JOSE MAURO DA CUNHA E CASTRO, CNPSO; RONALDO SIMÃO DE OLIVEIRA, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO.
Ano de publicação:	2024
Referência:	Revista Caatinga, v. 37, e11440, 2024.
Páginas:	6 p.
Conteúdo:	Guava decline is a complex disease caused by the interaction between Meloidogyne enterolobii and Neocosmospora falciformis (Syn.: Fusarium solani). Thus, selecting M. enterolobii-resistant genotypes within the genus Psidiumis essential for controlling this disease, and developing a resistant cultivar of Psidium guajava could significantly impact this issue. Thus, the objective of this study was to assess the response of the guava plants of the cultivar Paluma to different densities of M. enterolobii inoculum. Guava seedlings were inoculated with 500, 1,000, 5,000, 10,000, and 20,000 eggs + second-stage juveniles (J2) of M. enterolobii per plant. Root and shoot fresh weights, shoot dry weight, root length, plant height, and stem base diameter were evaluated at 70 and 135 days after inoculation (DAI). Total number of M. enterolobii eggs + J2 in the root system and nematode reproduction factor nematode were assessed. Nematode multiplication in roots was not proportional to increases in initial inoculum density; thus, the best plant responses to nematode multiplication in the evaluated cultivar were found for the lowest tested densities. The reproduction factor decreased as the inoculum density was increased, at both evaluations (70 and 135 DAI).
Thesagro:	Goiaba Psidium Guajava Nematóide Doença de Planta
NAL Thesaurus:	Root-knot nematodes Guavas Plant diseases and disorders
Palavras-chave:	Nematoide-das-galhas Fator de reprodução Declínio-da-goiabeira Meloidogyne enterolobii Variedade Paluma
Digital Object Identifier:	10.1590/1983-21252024v3711440rc
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPSO)