Characterization, pathogenicity and anastomosis groups of Rhizoctonia solani from watermelon

Galvão, Kecia Mayara de Araújo; Cunha, Fábio Sanchez da; Ishikawa, Francine Hiromi; Costa, Antonio Elton da Silva; Capucho, Alexandre Sandri

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dc.creator	Galvão, Kecia Mayara de Araújo
dc.creator	Cunha, Fábio Sanchez da
dc.creator	Ishikawa, Francine Hiromi
dc.creator	Costa, Antonio Elton da Silva
dc.creator	Capucho, Alexandre Sandri
dc.date	2019-01-04
dc.date.accessioned	2023-03-30T19:35:13Z
dc.date.available	2023-03-30T19:35:13Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/2963
dc.identifier	10.14295/cs.v9i4.2963
dc.identifier.uri	https://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/246825
dc.description	The objective of this study was to characterize the morphological and pathogenic variation of Rhizoctonia solani isolates as well as to determine mycelial compatibility and hyphal fusion. The R. solani isolates CMM1053, CMM2967, CMM1052, CMM2983, CMM2971 and CMM3890 from watermelon were used. The determination of aggressiveness was evaluated using the six isolates inoculated in the Crimson Sweet susceptible cultivar in a completely randomized design (CRD) with five replicates, the sample unit consisting of one plant. The experiment of mycelial growth rate was installed in the factorial scheme, 6 isolates x 3 culture media, using the following culture media Nutrient Agar, PDA and PSA, and a total of 5 replicates. The color characterization and sclerotia formation was performed 15 days after the fungal inoculation in each culture medium. For the characterization of vegetative compatibility and occurrence of hyphal fusion, the experiments were performed in CDR with three and two replicates, respectively. CMM1053 and CMM1052 isolates were the most aggressive; however, they were statistically different only from CMM2967 isolate. The PSA medium was the most promising for the mycelial growth. It was possible to observe that there was variability in the colonies color, being higher in the Nutrient Agar medium. Based on evaluations of vegetative compatibility and hyphal fusion, the six isolates belong to the same anastomosis group.	en-US
dc.description	The objective of this study was to characterize the morphological and pathogenic variation of Rhizoctonia solani isolates as well as to determine mycelial compatibility and hyphal fusion. The R. solani isolates CMM1053, CMM2967, CMM1052, CMM2983, CMM2971 and CMM3890 from watermelon were used. The determination of aggressiveness was evaluated using the six isolates inoculated in the Crimson Sweet susceptible cultivar in a completely randomized design (CRD) with five replicates, the sample unit consisting of one plant. The experiment of mycelial growth rate was installed in the factorial scheme, 6 isolates x 3 culture media, using the following culture media Nutrient Agar, PDA and PSA, and a total of 5 replicates. The color characterization and sclerotia formation was performed 15 days after the fungal inoculation in each culture medium. For the characterization of vegetative compatibility and occurrence of hyphal fusion, the experiments were performed in CDR with three and two replicates, respectively. CMM1053 and CMM1052 isolates were the most aggressive; however, they were statistically different only from CMM2967 isolate. The PSA medium was the most promising for the mycelial growth. It was possible to observe that there was variability in the colonies color, being higher in the Nutrient Agar medium. Based on evaluations of vegetative compatibility and hyphal fusion, the six isolates belong to the same anastomosis group.	pt-BR
dc.format	application/pdf
dc.format	application/pdf
dc.language	eng
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/2963/609
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/2963/780
dc.rights	Copyright (c) 2019 Antonio Elton da Silva Costa, Kecia Mayara de Araújo Galvão, Francine Hiromi Ishikawa, Fábio Sanchez da Cunha, Alexandre Sandri Capucho	en-US
dc.source	Comunicata Scientiae; Vol. 9 No. 4 (2018); 710-717	en-US
dc.source	Comunicata Scientiae; v. 9 n. 4 (2018); 710-717	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.title	Characterization, pathogenicity and anastomosis groups of Rhizoctonia solani from watermelon	en-US
dc.title	Characterization, pathogenicity and anastomosis groups of Rhizoctonia solani from watermelon	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion