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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
18/05/2000 |
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Data da última atualização: |
07/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GUIMARÃES, E. P.; AMÉZQUITA, M. C.; LEMA, G.; CORREA-VICTORIA, F. |
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Afiliação: |
ELCIO PERPETUO GUIMARAES, CNPAF. |
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Título: |
Determination of minimum number of growing seasons for assessment of disease resistance stability in rice. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Crop Science, v. 38, n. 1, p. 67-71, Jan./Fev. 1998. |
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ISSN: |
0011-183X |
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DOI: |
10.2135/cropsci1998.0011183x003800010012x |
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Idioma: |
Inglês |
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Conteúdo: |
The literature reports that evaluations over a number of growing seasons are required to identify stable disease resistance in rice (Oryza sativa L.). CIAT's Rice Breeding Program alms to develop lines with stable resistance; therefore, the knowledge of how long a germplasm should be assessed before being used in crosses is important. For this research, 69 commercial cultivars grown in Latin America and the Caribbean were evaluated during 11 growing seasons in a ?hot spot? site for the four most important diseases of rice: leaf and panicle blast (caused by Pyricularia grisea Sacc.), leaf scald [caused by Microdochium oryzae (Hashioka & Yokogi) Samuels & I.C. Hallett syn. Gerlachla oryzae (Hashioka & Yokogi) W. Gams syn. Rhynchosporium oryzae (Hashioka & Yokogi)], and grain discoloration (caused by species of Sarodadium, Bipolaris, Alternaria, Gerlachia, Fusarium, Phoma, Curvularia, Trichoconiella, and Pseudomonas). Cultivar mean disease severity (M), its response to increase in disease pressure (b), and the standard deviations from the regression (Sb) were calculated. Eleven evaluation seasons were considered as the most reliable period, in which an ideal set of 13 cultivars was identified based on their disease resistance stability (M, b, and Sb values). To identify the minimum number of seasons required to assess stability of resistance, simulations were made with these 13 cultivars and the 11 seasons and the coincidence in selection and the number of misclassified entries were calculated. The M and b correlation values and the number of misclassified entries suggested that seven consecutive growing seasons (two per 12-mo. period) are necessary t MenosThe literature reports that evaluations over a number of growing seasons are required to identify stable disease resistance in rice (Oryza sativa L.). CIAT's Rice Breeding Program alms to develop lines with stable resistance; therefore, the knowledge of how long a germplasm should be assessed before being used in crosses is important. For this research, 69 commercial cultivars grown in Latin America and the Caribbean were evaluated during 11 growing seasons in a ?hot spot? site for the four most important diseases of rice: leaf and panicle blast (caused by Pyricularia grisea Sacc.), leaf scald [caused by Microdochium oryzae (Hashioka & Yokogi) Samuels & I.C. Hallett syn. Gerlachla oryzae (Hashioka & Yokogi) W. Gams syn. Rhynchosporium oryzae (Hashioka & Yokogi)], and grain discoloration (caused by species of Sarodadium, Bipolaris, Alternaria, Gerlachia, Fusarium, Phoma, Curvularia, Trichoconiella, and Pseudomonas). Cultivar mean disease severity (M), its response to increase in disease pressure (b), and the standard deviations from the regression (Sb) were calculated. Eleven evaluation seasons were considered as the most reliable period, in which an ideal set of 13 cultivars was identified based on their disease resistance stability (M, b, and Sb values). To identify the minimum number of seasons required to assess stability of resistance, simulations were made with these 13 cultivars and the 11 seasons and the coincidence in selection and the number of misclassified entries... Mostrar Tudo |
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Thesagro: |
Arroz; Doença; Oryza Sativa; Resistência. |
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Thesaurus Nal: |
Disease resistance; Rice. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02429naa a2200253 a 4500
001 1207736
005 2021-10-07
008 1998 bl uuuu u00u1 u #d
022 $a0011-183X
024 7 $a10.2135/cropsci1998.0011183x003800010012x$2DOI
100 1 $aGUIMARÃES, E. P.
245 $aDetermination of minimum number of growing seasons for assessment of disease resistance stability in rice.$h[electronic resource]
260 $c1998
520 $aThe literature reports that evaluations over a number of growing seasons are required to identify stable disease resistance in rice (Oryza sativa L.). CIAT's Rice Breeding Program alms to develop lines with stable resistance; therefore, the knowledge of how long a germplasm should be assessed before being used in crosses is important. For this research, 69 commercial cultivars grown in Latin America and the Caribbean were evaluated during 11 growing seasons in a ?hot spot? site for the four most important diseases of rice: leaf and panicle blast (caused by Pyricularia grisea Sacc.), leaf scald [caused by Microdochium oryzae (Hashioka & Yokogi) Samuels & I.C. Hallett syn. Gerlachla oryzae (Hashioka & Yokogi) W. Gams syn. Rhynchosporium oryzae (Hashioka & Yokogi)], and grain discoloration (caused by species of Sarodadium, Bipolaris, Alternaria, Gerlachia, Fusarium, Phoma, Curvularia, Trichoconiella, and Pseudomonas). Cultivar mean disease severity (M), its response to increase in disease pressure (b), and the standard deviations from the regression (Sb) were calculated. Eleven evaluation seasons were considered as the most reliable period, in which an ideal set of 13 cultivars was identified based on their disease resistance stability (M, b, and Sb values). To identify the minimum number of seasons required to assess stability of resistance, simulations were made with these 13 cultivars and the 11 seasons and the coincidence in selection and the number of misclassified entries were calculated. The M and b correlation values and the number of misclassified entries suggested that seven consecutive growing seasons (two per 12-mo. period) are necessary t
650 $aDisease resistance
650 $aRice
650 $aArroz
650 $aDoença
650 $aOryza Sativa
650 $aResistência
700 1 $aAMÉZQUITA, M. C.
700 1 $aLEMA, G.
700 1 $aCORREA-VICTORIA, F.
773 $tCrop Science$gv. 38, n. 1, p. 67-71, Jan./Fev. 1998.
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Embrapa Arroz e Feijão (CNPAF) |
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| Registros recuperados : 150 | |
| 84. |  | AMÉZQUITA, M. C.; CHATEL, M.; GUIMARÃES, E. P.; OSPINA, Y.; SILVA, J. The statistical analysis of an exploratory trial for methodological decision making. In: GUIMARÃES, E. P.; SANZ, J. I.; RAO, I. M.; AMÉZQUITA, M. C.; AMÉZQUITA, E.; THOMAS, R. J. (Ed.). Agropastoral systems for the tropical savannas of Latin America. Cali: CIAT; Brasília: Embrapa, 2004. p. 90-101. (CIAT. Publication, 338).| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 88. | | MORAIS, O. P. de; CHATEL, M. H. G. L.; GUIMARÃES, E. P.; FAGERIA, N. K. Eficiência da seleção direta, em populações F2 de arroz de sequeiro, para solo de baixa fertilidade. In: REUNIÃO NACIONAL DE PESQUISA DE ARROZ, 3., 1987, Goiânia. Resumos. Brasília, DF: EMBRAPA-DDT, 1987. p. 65. (EMBRAPA-CNPAF. Documentos, 19).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 89. | | MORAIS, O. P. de; CHATEL, M. H. G. L.; GUIMARÃES, E. P.; FAGERIA, N. K. Eficiência da seleção indireta, em populações F2 de arroz de sequeiro, para solo de baixa fertilidade. In: REUNIÃO NACIONAL DE PESQUISA DE ARROZ, 3., 1987, Goiânia. Anais.. Goiânia: EMBRAPA-CNPAF, 1991. p. 421-437. (EMBRAPA-CNPAF. Documentos, 25).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 91. | | GUIMARÃES, E. P.; SANZ, J. I.; RAO, I. M.; AMÉZQUITA, E. Investigaciones en sistemas agropastoriles: qué hemos aprendido y qué debemos hacer en el futuro. In: GUIMARÃES, E. P.; SANZ, J. I.; RAO, I. M.; AMÉZQUITA, M. C.; AMÉZQUITA, E. (Ed.). Sistemas agropastoriles en sabanas tropicales de América Latina. Cali: CIAT; Brasília, DF: Embrapa, 1999. p. 301-312.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 97. | | GUIMARÃES, E. P.; SANZ, J. I.; RAO, I. M.; AMÉZQUITA, E. Research on agropastoral systems: what we have learned and what we should do. In: GUIMARÃES, E. P.; SANZ, J. I.; RAO, I. M.; AMÉZQUITA, M. C.; AMÉZQUITA, E.; THOMAS, R. J. (Ed.). Agropastoral systems for the tropical savannas of Latin America. Cali: CIAT; Brasília: Embrapa, 2004. p. 326-336. (CIAT. Publication, 338).| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 98. | | BORÉM, A.; GUIMARÃES, E. P.; FEDERIZZI, L. C.; TOLEDO, J. F. F. de. From Mendel to genomics, plant breeding milestones: a review. Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 4, p. 649-658, dec. 2002.| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 150 | |
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