INTERAÇÕES ENTRE Fusarium solani f. sp. phaseoli E Rhizoctonia solani NA SEVERIDADE DA PODRIDÃO RADICULAR DO FEIJOEIRO
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Universidade Federal de Goiás
2009
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| author | Eliane Divina de Tolêdo-Souza |
| author_facet | Eliane Divina de Tolêdo-Souza |
| contents | INTERAÇÕES ENTRE Fusarium solani f. sp. phaseoli E Rhizoctonia solani NA SEVERIDADE DA PODRIDÃO RADICULAR DO FEIJOEIRO Eliane Divina de Tolêdo-Souza Murillo Lobo Júnior Pedro Marques da Silveira Adalberto Corrêa Café Filho Agrociencias bean diseases Soilborne fungus soil infestation The present work aimed to evaluate the effect of inoculum densities of Fusarium solani f. sp. phaseoli (Fsp) and Rhizoctonia solani (Rs) and their interactions on the severity of root rot and on the dry mass of bean plants. Soil was infested by the addition of Rs or Fsp-colonized sorghum seeds, in the amounts of 0.00 g; 0.06 g; 0.12 g; 0.25 g; 0.50 g; and 1.00 g for Rs, and 0 g; 1g; 2 g; 4 g; 8 g; and 16 g for Fsp per pot (1.4 kg of soil). The densities used for the joint soil infestations with both pathogens were the same used in the separate pathogen infestations. A progressive rise in the severity of root rots was observed with the increase of inoculum density for both pathogens. Maximum disease severities for Rs were 67% and 22%, in separate or combined infections with Fsp, respectively. Maximum disease severities with Fusarium were 14% and 38%, in separate or combined infections with Rs, respectively. The results suggest that Rhizoctonia solani stimulated the expression of symptoms of Fusarium solani f. sp. phaseoli, while Fsp inhibited the expression of symptoms caused by Rs. Negative correlations between the inoculum density and bean dry weight were generally observed, except for the single infestation with Fsp. 2009 artículo científico 1517-6398 https://www.redalyc.org/articulo.oa?id=253020183003 pt http://www.redalyc.org/revista.oa?id=2530 Pesquisa Agropecuária Tropical application/pdf Universidade Federal de Goiás Pesquisa Agropecuária Tropical (Brasil) Num.1 Vol.39 |
| format | Artículo científico |
| id | redalyc_253020183003 |
| institution | Redalyc |
| language | pt |
| publishDate | 2009 |
| publisher | Universidade Federal de Goiás |
| spellingShingle | INTERAÇÕES ENTRE Fusarium solani f. sp. phaseoli E Rhizoctonia solani NA SEVERIDADE DA PODRIDÃO RADICULAR DO FEIJOEIRO Eliane Divina de Tolêdo-Souza Agrociencias bean diseases Soilborne fungus soil infestation INTERAÇÕES ENTRE Fusarium solani f. sp. phaseoli E Rhizoctonia solani NA SEVERIDADE DA PODRIDÃO RADICULAR DO FEIJOEIRO Eliane Divina de Tolêdo-Souza Murillo Lobo Júnior Pedro Marques da Silveira Adalberto Corrêa Café Filho Agrociencias bean diseases Soilborne fungus soil infestation The present work aimed to evaluate the effect of inoculum densities of Fusarium solani f. sp. phaseoli (Fsp) and Rhizoctonia solani (Rs) and their interactions on the severity of root rot and on the dry mass of bean plants. Soil was infested by the addition of Rs or Fsp-colonized sorghum seeds, in the amounts of 0.00 g; 0.06 g; 0.12 g; 0.25 g; 0.50 g; and 1.00 g for Rs, and 0 g; 1g; 2 g; 4 g; 8 g; and 16 g for Fsp per pot (1.4 kg of soil). The densities used for the joint soil infestations with both pathogens were the same used in the separate pathogen infestations. A progressive rise in the severity of root rots was observed with the increase of inoculum density for both pathogens. Maximum disease severities for Rs were 67% and 22%, in separate or combined infections with Fsp, respectively. Maximum disease severities with Fusarium were 14% and 38%, in separate or combined infections with Rs, respectively. The results suggest that Rhizoctonia solani stimulated the expression of symptoms of Fusarium solani f. sp. phaseoli, while Fsp inhibited the expression of symptoms caused by Rs. Negative correlations between the inoculum density and bean dry weight were generally observed, except for the single infestation with Fsp. 2009 artículo científico 1517-6398 https://www.redalyc.org/articulo.oa?id=253020183003 pt http://www.redalyc.org/revista.oa?id=2530 Pesquisa Agropecuária Tropical application/pdf Universidade Federal de Goiás Pesquisa Agropecuária Tropical (Brasil) Num.1 Vol.39 |
| title | INTERAÇÕES ENTRE Fusarium solani f. sp. phaseoli E Rhizoctonia solani NA SEVERIDADE DA PODRIDÃO RADICULAR DO FEIJOEIRO |
| topic | Agrociencias bean diseases Soilborne fungus soil infestation |
| url | https://www.redalyc.org/articulo.oa?id=253020183003 |