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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
20/09/2006 |
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Data da última atualização: |
20/09/2006 |
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Autoria: |
DURIGAN, G.; LEITÃO FILHO, H. de F.; RODRIGUES, R. R. |
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Título: |
Phytosociology and structure of a frequently burnt cerrado vegetation in SE-Brazil. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Flora, v.189, p. 153-160, 1994. |
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Idioma: |
Inglês |
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Conteúdo: |
"Cerrado" vegetation was studied in an area where frequent fires occur, at Itirapina, SP, Brazil (22o08'S, 47o47'W). The phytosociological study was carried out using the quadrat method, with a total sample area of 5200 m2, divided in thirteen 400m2 plots. All individuals whose basal stem perimeter were equal to or greater than 15 cm were measured and identified. The "cerrado" studied shows quite low diversity, compared to vegetation protected from fire action in neighboring areas. Only 44 species, grouped in 24 families, where found. Species, and even important families in neighboring areas, were not present in the burned area. This suggests they may have been eliminated by fire. |
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Thesagro: |
Cerrado; Fogo; Queimada. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01168naa a2200181 a 4500
001 1569731
005 2006-09-20
008 1994 bl --- 0-- u #d
100 1 $aDURIGAN, G.
245 $aPhytosociology and structure of a frequently burnt cerrado vegetation in SE-Brazil.
260 $c1994
520 $a"Cerrado" vegetation was studied in an area where frequent fires occur, at Itirapina, SP, Brazil (22o08'S, 47o47'W). The phytosociological study was carried out using the quadrat method, with a total sample area of 5200 m2, divided in thirteen 400m2 plots. All individuals whose basal stem perimeter were equal to or greater than 15 cm were measured and identified. The "cerrado" studied shows quite low diversity, compared to vegetation protected from fire action in neighboring areas. Only 44 species, grouped in 24 families, where found. Species, and even important families in neighboring areas, were not present in the burned area. This suggests they may have been eliminated by fire.
650 $aCerrado
650 $aFogo
650 $aQueimada
700 1 $aLEITÃO FILHO, H. de F.
700 1 $aRODRIGUES, R. R.
773 $tFlora$gv.189, p. 153-160, 1994.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/03/2014 |
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Data da última atualização: |
04/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
AKAMATSU, H.; YAMANAKA, N.; YAMAOKA, Y.; SOARES, R. M.; MOREL, W.; IVANCOVICH, A. J. G.; BOGADO, A. N.; KATO, M.; YORINORI, J. T.; SUENAGA, K. |
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Afiliação: |
HAJIME AKAMATSU, JIRCAS; NAOKI YAMANAKA, JIRCAS; YUICHI YAMAOKA, Faculty of Life and Environmental Sciences, University of Tsukuba; RAFAEL MOREIRA SOARES, CNPSO; WILFRIDO MOREL, CICM/CRIA/IPTA; ANTONIO JUAN GERARDO IVANCOVICH, EEA-Pergamino/INTA; ALICIA NOELIA BOGADO, CICM/CRIA/IPTA; MASAYASU KATO, JIRCAS; JOSÉ TADASHI YORINORI, CNPSO; KAZUHIRO SUENAGA, JIRCAS. |
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Título: |
Pathogenic diversity of soybean rust in Argentina, Brazil, and Paraguay. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Journal of General Plant Pathology, v. 79, n. 1, p. 28-40, Jan. 2013. |
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ISSN: |
1345-2630 |
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DOI: |
10.1007/s10327-012-0421-7 |
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Idioma: |
Inglês |
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Conteúdo: |
Phakopsora pachyrhizi, the cause of soybean rust, is an economically important pathogen of soybean in South America. Understanding the pathogenicity of indigenous fungal populations is useful for identifying resistant plant genotypes and targeting effective cultivars against certain populations. Fifty-nine rust populations from Argentina, Brazil, and Paraguay were evaluated for pathogenicity in three cropping seasons, 2007/2008?2009/2010, using 16 soybean differentials. Only two pairs of P. pachyrhizi populations displayed identical pathogenicity profiles, indicating substantial pathogenic variation in the rust populations. Comparative analysis of 59 South American and five Japanese samples revealed that pathogenic differences were not only detected within South America but also distinct between the P. pachyrhizi populations from South America and Japan. In addition, seasonal changes in rust pathogenicity were detected during the sampling period. The differentials containing resistance genes (Rpp: resistance to P. p achyrhizi) Rpp1, Rpp2, Rpp3, and Rpp4, except for Plant Introduction (PI) 587880A, displayed a resistant reaction to only 1.8?14, 24?28, 22, and 36 % of South American P. pachyrhizi populations, respectively. In contrast, PI 587880A (Rpp1), Shiranui (Rpp5), and 3 Rpp-unknown differentials (PI 587855, PI 587905, and PI 594767A) showed a resistant reaction to 78?96 % of all populations. This study demonstrated that P. pachyrhizi populations from South America vary geographically and temporally in pathogenicity and that the known Rpp genes other than Rpp1 in PI 587880A and Rpp5 have been less effective against recent pathogen populations in the countries studied. MenosPhakopsora pachyrhizi, the cause of soybean rust, is an economically important pathogen of soybean in South America. Understanding the pathogenicity of indigenous fungal populations is useful for identifying resistant plant genotypes and targeting effective cultivars against certain populations. Fifty-nine rust populations from Argentina, Brazil, and Paraguay were evaluated for pathogenicity in three cropping seasons, 2007/2008?2009/2010, using 16 soybean differentials. Only two pairs of P. pachyrhizi populations displayed identical pathogenicity profiles, indicating substantial pathogenic variation in the rust populations. Comparative analysis of 59 South American and five Japanese samples revealed that pathogenic differences were not only detected within South America but also distinct between the P. pachyrhizi populations from South America and Japan. In addition, seasonal changes in rust pathogenicity were detected during the sampling period. The differentials containing resistance genes (Rpp: resistance to P. p achyrhizi) Rpp1, Rpp2, Rpp3, and Rpp4, except for Plant Introduction (PI) 587880A, displayed a resistant reaction to only 1.8?14, 24?28, 22, and 36 % of South American P. pachyrhizi populations, respectively. In contrast, PI 587880A (Rpp1), Shiranui (Rpp5), and 3 Rpp-unknown differentials (PI 587855, PI 587905, and PI 594767A) showed a resistant reaction to 78?96 % of all populations. This study demonstrated that P. pachyrhizi populations from South America vary ... Mostrar Tudo |
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Thesagro: |
Soja. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/98660/1/Pathogenic-diversity-of-soybean-rust-in-Argentina-Brazil.pdf
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Marc: |
LEADER 02446naa a2200265 a 4500
001 1981729
005 2022-04-04
008 2013 bl uuuu u00u1 u #d
022 $a1345-2630
024 7 $a10.1007/s10327-012-0421-7$2DOI
100 1 $aAKAMATSU, H.
245 $aPathogenic diversity of soybean rust in Argentina, Brazil, and Paraguay.$h[electronic resource]
260 $c2013
520 $aPhakopsora pachyrhizi, the cause of soybean rust, is an economically important pathogen of soybean in South America. Understanding the pathogenicity of indigenous fungal populations is useful for identifying resistant plant genotypes and targeting effective cultivars against certain populations. Fifty-nine rust populations from Argentina, Brazil, and Paraguay were evaluated for pathogenicity in three cropping seasons, 2007/2008?2009/2010, using 16 soybean differentials. Only two pairs of P. pachyrhizi populations displayed identical pathogenicity profiles, indicating substantial pathogenic variation in the rust populations. Comparative analysis of 59 South American and five Japanese samples revealed that pathogenic differences were not only detected within South America but also distinct between the P. pachyrhizi populations from South America and Japan. In addition, seasonal changes in rust pathogenicity were detected during the sampling period. The differentials containing resistance genes (Rpp: resistance to P. p achyrhizi) Rpp1, Rpp2, Rpp3, and Rpp4, except for Plant Introduction (PI) 587880A, displayed a resistant reaction to only 1.8?14, 24?28, 22, and 36 % of South American P. pachyrhizi populations, respectively. In contrast, PI 587880A (Rpp1), Shiranui (Rpp5), and 3 Rpp-unknown differentials (PI 587855, PI 587905, and PI 594767A) showed a resistant reaction to 78?96 % of all populations. This study demonstrated that P. pachyrhizi populations from South America vary geographically and temporally in pathogenicity and that the known Rpp genes other than Rpp1 in PI 587880A and Rpp5 have been less effective against recent pathogen populations in the countries studied.
650 $aSoja
700 1 $aYAMANAKA, N.
700 1 $aYAMAOKA, Y.
700 1 $aSOARES, R. M.
700 1 $aMOREL, W.
700 1 $aIVANCOVICH, A. J. G.
700 1 $aBOGADO, A. N.
700 1 $aKATO, M.
700 1 $aYORINORI, J. T.
700 1 $aSUENAGA, K.
773 $tJournal of General Plant Pathology$gv. 79, n. 1, p. 28-40, Jan. 2013.
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