2007
DOI: 10.1590/s0100-41582007000500009
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Reação de cultivares de feijão-caupi à mela (Rhizoctonia solani) em Roraima

Abstract: Em Roraima, uma das principais doenças que incidem na cultura do feijão-caupi (Vigna unguiculata) é a mela causada pelo fungo Thanatephorus cucumeris (anamorfo Rhizoctonia solani). Este trabalho teve como objetivo avaliar a reação a esta doença de dez cultivares de feijão-caupi em área de cerrado em Roraima, em dois anos consecutivos. As cultivares de porte ereto utilizadas foram BRS-Mazagão, IT86D-719, Vita-7 (Epace-1), BR02-Bragança, Pitiúba, e as de porte prostrado, BRS-Amapá, BR03-Tracuateua, BR17-Gurguéia… Show more

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Cited by 13 publications
(9 citation statements)
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“…The precipitation in the first 30 days after planting (DAP) was 127 mm, with 173 mm at 30 to 60 DAP, 74 mm at 60 to 90 DAP and 219 mm at 90 to 120 DAP (193 mm at 10 days before harvest). According to Nechet and Halfeld-Vieira (2007), these combinations of environmental factors favor the Rhizoctonia solani development, causing grain yield losses of up to 50% (POLTRONIERI; TRINDADE; SILVA, 1994). Table 3.…”
Section: Resultsmentioning
confidence: 99%
“…The precipitation in the first 30 days after planting (DAP) was 127 mm, with 173 mm at 30 to 60 DAP, 74 mm at 60 to 90 DAP and 219 mm at 90 to 120 DAP (193 mm at 10 days before harvest). According to Nechet and Halfeld-Vieira (2007), these combinations of environmental factors favor the Rhizoctonia solani development, causing grain yield losses of up to 50% (POLTRONIERI; TRINDADE; SILVA, 1994). Table 3.…”
Section: Resultsmentioning
confidence: 99%
“…La mustia hilachosa se presenta en terrenos infectados con períodos prolongados de lluvia, temperatura y humedad relativa promedio de 24º C y 80% (Rodríguez et al, 1999;Nechet & Halfeld-Vieira, 2007). Ambas condiciones se presentaron durante los años de investigación, por lo que este comportamiento se debió posiblemente a la precipitación de 21,80 mm Tabla 5.…”
Section: Variables Sanitariasunclassified
“…Studies of reaction of cowpea genotypes for resistance to pathogens M. phaseolina performed by Athayde Sobrinho (2004), Noronha et al (2009Noronha et al ( , 2010, Lima et al (2012a,b) and for T. cucumeris developed by Nechet et al (2006) and Nechet and Halfeld-Vieira (2007), emphasizes the necessity of recombination of resistant materials and potential promising sources for study and obtaining progenies with good level of resistance to these pathogens.…”
Section: Discussionmentioning
confidence: 99%
“…From results obtained in studies conducted by Noronha et al (2009), Lima et al (2012a and Nechet and Halfeld-Vieira (2007), nineteen cowpea genotypes were selected as parents, being divided into two groups. Group A was composed of fourteen genitors of cowpea chosen by presenting resistance to the fungus T. cucumeris, and group B contained five parents who showed reactions of resistance and moderate resistance to the fungus M. phaseolina (Table 1).…”
Section: Genetic Materialsmentioning
confidence: 99%