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| Maketon,Monchan; Apisitsantikul,Jirasak; Siriraweekul,Chatchai. |
| Two biological control agents, Bacillus subtilis AP-01 (LarminarTM) and Trichoderma harzianum AP-001 (TrisanTM) alone or/in combination were investigated in controlling three tobacco diseases, including bacterial wilt (Ralstonia solanacearum), damping-off (Pythium aphanidermatum), and frogeye leaf spot (Cercospora nicotiana). Tests were performed in greenhouse by soil sterilization prior to inoculation of the pathogens. Bacterial-wilt and damping off pathogens were drenched first and followed with the biological control agents and for comparison purposes, two chemical fungicides. But for frogeye leaf spot, which is an airborne fungus, a spraying procedure for every treatment including a chemical fungicide was applied instead of drenching. Results showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Tobacco diseases; Bacterial wilt; Damping off; Frogeye leaf spot. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200018 |
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| Gravina,Geraldo de Amaral; Sediyama,Carlos Sigueyuki; Martins Filho,Sebastião; Moreira,Maurílio Alves; Barros,Everaldo Gonçalves de; Cruz,Cosme Damião. |
| Seven soybean cultivars (Bossier, Cristalina, Davis, Kent, Lincoln, Paraná and Uberaba), with different levels of resistance to Cercospora sojina, race 04, were crossed according to a diallel design, with no reciprocals, to determine the general and the specific combining abilities for the resistance. The evaluations of the reaction to the disease were performed 20 days after the inoculation of the fungus on the most infected leaflet of the plant, in the parents and in the F1 hybrids. To quantify the resistance, the following characteristics were evaluated: infection degree (ID); number of lesions per leaflet (NLL); lesion mean diameter (LMD); lesioned leaf area (LLA); percentage of lesioned leaf area (PLLA); number of lesions per square centimeter (NLC)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Diallel; Canonical variables; Frogeye leaf spot. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000300015 |
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| Martins Filho,Sebastião; Sediyama,Carlos Sigueyuki; Moreira,Maurilio Alves; Barros,Everaldo Gonçalves de. |
| The soybean (Glycine max (L.) Merrill) frogeye leaf spot is caused by the fungus Cercospora sojina Hara and is a widespread disease in Brazil and other countries, causing severe losses in grain yield and also affecting seed quality. The availability of DNA markers linked to genes for resistance to this disease would accelerate breeding programs, particularly when other traits are also being evaluated. Bulked segregant analysis was applied to 3 F2 populations derived from crosses between the resistant cultivars Parana, Cristalina and Uberaba, and the susceptible cultivar Bossier. In the cross 'Parana' x 'Bossier', 2 RAPD markers were identified, CSOPA1(800C) and CSOPA2(1,250C), located at 4.4 ± 1.8 centiMorgans (cM) and 3.4 ± 1.7 cM respectively from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Molecular markers; RAPD; SCAR; Soybean; Cercospora sojina; Frogeye leaf spot. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000300012 |
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