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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
12/04/2000 |
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Data da última atualização: |
15/10/2004 |
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Autoria: |
FARIAS NETO, A. L. de; SOUZA, P. I. de M. de; SPEHAR, C. R.; MOREIRA, C. T. |
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Título: |
Soybean breeding program in brazilian savannas. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 6., 1999, Chicago. Proceedings: invited and contributed papers and posters. Chicago: University of Illinois / Soybean Research & Development Council, 1999. |
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Páginas: |
p.497. |
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Idioma: |
Inglês |
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Conteúdo: |
The savanna region in Brazil (Cerrados), traditionally explored for extensive beef cattle production, today it is the major grain production area in Brazil, with about 10 million ha. Incorporation of 'Cerrados' into the Brazilian agricultural production was based on governmental incentives directed to farmers and on strong public investments on research. EMBRAPA, 'Brazilian Agricultural Research Enterprise', had an important role to overcome the major limitations for agricultural activities in this area, by turning soybeans an important crop in this frontier. Soybean breeding has been a continuous process to improve yield and important agronomic characters such as seed quality, insect and disease resistance. Late flowering cultivars, adapted to low latitudes was the first achievement by local breeding programs and the main factor to soybean development in the region. However, the crop expansion increased the number and intensity of diseases such as bacterial pustule (Xantomonas phaseoli pv. glycines) and frogeye leaf spot (Cercospora sojina) in the 80's. The former has been practically excluded from the cultivars, since at least one resistant parent is included in all crosses. In the early 90's, breeding for resistance to stem canker (Diaporthe phaseolorum f.sp meridionalis) and soybean cyst nematode (Heterodera glycines) became important objectives. Adapted cultivars such as 'Dourados', 'IAC-12', 'IAC-13' and 'BR16' are sources of resistance to stem canker and backcrossing is the method most used to develop resistant cultivars. Breeding for resistance to soybean cyst nematode (SCN) whose genetic control of is polygenic and complex, has used American resistant sources. The first SCN resistant cultivar is 'MG BR-46 Renascenca' released in 1996. Other diseases and pest such as Powdery Mildew (Microsphaera diffusa), target spot (Corynespora cassicola), sudden death syndrome (Fusarium solani f. sp glycines) and root-knot nematodes (Meloidogyne incognita, M. javanica and M, arenaria) are economically important in the region and sources of resistance are now under investigation. More recently, efforts have been made to develop cultivars of different maturity groups for diversified cropping systems. Medium-maturity cultivars'MG BR-46 Conquista', BRS-62 Carla', and 'BRS-158 Milena' were released in the last three years. It's expected that with a new law on protection of breeders rights, private enterprises and foundations will invest in soybean breeding and seed production, resulting in high cultivar availability and seed markert competition. MenosThe savanna region in Brazil (Cerrados), traditionally explored for extensive beef cattle production, today it is the major grain production area in Brazil, with about 10 million ha. Incorporation of 'Cerrados' into the Brazilian agricultural production was based on governmental incentives directed to farmers and on strong public investments on research. EMBRAPA, 'Brazilian Agricultural Research Enterprise', had an important role to overcome the major limitations for agricultural activities in this area, by turning soybeans an important crop in this frontier. Soybean breeding has been a continuous process to improve yield and important agronomic characters such as seed quality, insect and disease resistance. Late flowering cultivars, adapted to low latitudes was the first achievement by local breeding programs and the main factor to soybean development in the region. However, the crop expansion increased the number and intensity of diseases such as bacterial pustule (Xantomonas phaseoli pv. glycines) and frogeye leaf spot (Cercospora sojina) in the 80's. The former has been practically excluded from the cultivars, since at least one resistant parent is included in all crosses. In the early 90's, breeding for resistance to stem canker (Diaporthe phaseolorum f.sp meridionalis) and soybean cyst nematode (Heterodera glycines) became important objectives. Adapted cultivars such as 'Dourados', 'IAC-12', 'IAC-13' and 'BR16' are sources of resistance to stem canker and backcrossing... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Soybean. |
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Thesagro: |
Cerrado; Melhoramento; Soja. |
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Thesaurus Nal: |
Brazil; breeding; savannas. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03371naa a2200265 a 4500
001 1461714
005 2004-10-15
008 1999 bl uuuu u00u1 u #d
100 1 $aFARIAS NETO, A. L. de
245 $aSoybean breeding program in brazilian savannas.
260 $c1999
300 $ap.497.
520 $aThe savanna region in Brazil (Cerrados), traditionally explored for extensive beef cattle production, today it is the major grain production area in Brazil, with about 10 million ha. Incorporation of 'Cerrados' into the Brazilian agricultural production was based on governmental incentives directed to farmers and on strong public investments on research. EMBRAPA, 'Brazilian Agricultural Research Enterprise', had an important role to overcome the major limitations for agricultural activities in this area, by turning soybeans an important crop in this frontier. Soybean breeding has been a continuous process to improve yield and important agronomic characters such as seed quality, insect and disease resistance. Late flowering cultivars, adapted to low latitudes was the first achievement by local breeding programs and the main factor to soybean development in the region. However, the crop expansion increased the number and intensity of diseases such as bacterial pustule (Xantomonas phaseoli pv. glycines) and frogeye leaf spot (Cercospora sojina) in the 80's. The former has been practically excluded from the cultivars, since at least one resistant parent is included in all crosses. In the early 90's, breeding for resistance to stem canker (Diaporthe phaseolorum f.sp meridionalis) and soybean cyst nematode (Heterodera glycines) became important objectives. Adapted cultivars such as 'Dourados', 'IAC-12', 'IAC-13' and 'BR16' are sources of resistance to stem canker and backcrossing is the method most used to develop resistant cultivars. Breeding for resistance to soybean cyst nematode (SCN) whose genetic control of is polygenic and complex, has used American resistant sources. The first SCN resistant cultivar is 'MG BR-46 Renascenca' released in 1996. Other diseases and pest such as Powdery Mildew (Microsphaera diffusa), target spot (Corynespora cassicola), sudden death syndrome (Fusarium solani f. sp glycines) and root-knot nematodes (Meloidogyne incognita, M. javanica and M, arenaria) are economically important in the region and sources of resistance are now under investigation. More recently, efforts have been made to develop cultivars of different maturity groups for diversified cropping systems. Medium-maturity cultivars'MG BR-46 Conquista', BRS-62 Carla', and 'BRS-158 Milena' were released in the last three years. It's expected that with a new law on protection of breeders rights, private enterprises and foundations will invest in soybean breeding and seed production, resulting in high cultivar availability and seed markert competition.
650 $aBrazil
650 $abreeding
650 $asavannas
650 $aCerrado
650 $aMelhoramento
650 $aSoja
653 $aBrasil
653 $aSoybean
700 1 $aSOUZA, P. I. de M. de
700 1 $aSPEHAR, C. R.
700 1 $aMOREIRA, C. T.
773 $tIn: WORLD SOYBEAN RESEARCH CONFERENCE, 6., 1999, Chicago. Proceedings: invited and contributed papers and posters. Chicago: University of Illinois / Soybean Research & Development Council, 1999.
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Registro original: |
Embrapa Soja (CNPSO) |
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| Registros recuperados : 96 | |
| 15. |  | SOUZA, P. I. de M. de; URBEN FILHO, G. Soja. In: EMBRAPA. Centro de Pesquisa Agropecuaria dos Cerrados (Planaltina, DF). Relatorio tecnico anual do Centro de Pesquisa Agropecuaria dos Cerrados 1985/1987. Planaltina, 1991. p.161-166.| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 96 | |
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