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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Unidades Centrais. |
Data corrente: |
13/03/2000 |
Data da última atualização: |
06/04/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ARAÚJO, L. G. de; PRABHU, A. S.; FREIRE, A. de B. |
Afiliação: |
LEILA GARCES DE ARAUJO; ANNE SITARAMA PRABHU, CNPAF; ADELSON DE BARROS FREIRE, CNPAF. |
Título: |
Development of blast resistant somaclones of the upland rice cultivar Araguaia. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, v. 35, n. 2, p. 357-367, fev. 2000. |
Idioma: |
Inglês |
Conteúdo: |
The degree of blast resistance of upland rice (Oryza sativa L.) cultivar Araguaia as decreased over time causing significant yield losses. The major objective of this study was to obtain blast(Pyricularia grisea) resistant somaclones, adapting greenhouse and field selection procedures. Rice blast resistance and agronomic traits were assessed in R2 to R6 generations derived from regenerant plants (R1) from immature panicles of Araguaia. The evaluation and selection procedures include testing of early segregating populations and fixed lines in the advanced generations, under natural field conditions, and artificial inoculations in the greenhouse, with prevalent races IB-1 and IB-9 of P. grisea. Somaclones with both vertical resistance and slow blasting resistance were obtained. Twenty of 31 somaclones developed with a high degree of vertical resistance and fan shaped plant type maintained resistance in field and blast nursery tests in the R6 generation. Greenhouse selection with two specific physiologic races yielded 44 somaclones with slow blasting resistance, similar plant type and yield potential as that of Araguaia. |
Palavras-Chave: |
Araguaia; Cultivar; Cultura; Magnaphorte grisea; Somaclonal; Variação; Variacao somaclonal. |
Thesagro: |
Arroz; Brusone; Cultura de Tecido; Oryza Sativa; Pyricularia Grisea; Tecido. |
Thesaurus Nal: |
rice; somaclonal variation; tissue culture. |
Categoria do assunto: |
-- H Saúde e Patologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/16810/1/pab98_095.pdf
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Marc: |
LEADER 02030naa a2200337 a 4500 001 1207655 005 2022-04-06 008 2000 bl uuuu u00u1 u #d 100 1 $aARAÚJO, L. G. de 245 $aDevelopment of blast resistant somaclones of the upland rice cultivar Araguaia. 260 $c2000 520 $aThe degree of blast resistance of upland rice (Oryza sativa L.) cultivar Araguaia as decreased over time causing significant yield losses. The major objective of this study was to obtain blast(Pyricularia grisea) resistant somaclones, adapting greenhouse and field selection procedures. Rice blast resistance and agronomic traits were assessed in R2 to R6 generations derived from regenerant plants (R1) from immature panicles of Araguaia. The evaluation and selection procedures include testing of early segregating populations and fixed lines in the advanced generations, under natural field conditions, and artificial inoculations in the greenhouse, with prevalent races IB-1 and IB-9 of P. grisea. Somaclones with both vertical resistance and slow blasting resistance were obtained. Twenty of 31 somaclones developed with a high degree of vertical resistance and fan shaped plant type maintained resistance in field and blast nursery tests in the R6 generation. Greenhouse selection with two specific physiologic races yielded 44 somaclones with slow blasting resistance, similar plant type and yield potential as that of Araguaia. 650 $arice 650 $asomaclonal variation 650 $atissue culture 650 $aArroz 650 $aBrusone 650 $aCultura de Tecido 650 $aOryza Sativa 650 $aPyricularia Grisea 650 $aTecido 653 $aAraguaia 653 $aCultivar 653 $aCultura 653 $aMagnaphorte grisea 653 $aSomaclonal 653 $aVariação 653 $aVariacao somaclonal 700 1 $aPRABHU, A. S. 700 1 $aFREIRE, A. de B. 773 $tPesquisa Agropecuária Brasileira$gv. 35, n. 2, p. 357-367, fev. 2000.
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Embrapa Arroz e Feijão (CNPAF) |
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