Data/hora: 23/06/2024 01:03:42

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Unidades Centrais.
Data corrente: | 19/10/1998
Data da última atualização: | 06/10/2020
Autoria: | ARAÚJO, L. G. de; PRABHU, A. S.; FREIRE, A. B.
Afiliação: | LEILA GARCES DE ARAUJO; ANNE SITARAMA PRABHU, CNPAF; ADELSON DE BARROS FREIRE, CNPAF.
Título: | Variation for rice blast resistance in early somaclonal generations derived from immature panicles.
Ano de publicação: | 1998
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, v. 33, n. 8, p. 1349-1359, ago. 1998.
ISSN: | 0100-204X
Idioma: | Inglês
Conteúdo: | Somaclones derived from immature panicles of the rice cultivars Bluebelle and Maratellisusceptible to blast and their F1?s from crosses with resistant donors (Araguaia, Basmati-370 andRamtulasi) were compared in the R2 (plants from self-pollinated seed from primary R1 regenerants) and R3generations in the greenhouse and field for blast resistance. In the greenhouse the R2 plants and R3 lineswere inoculated with the races IB-1 and IB-9 of Pyricularia grisea. The frequency of plants resistant toboth races ranged from 16 to 42% in the F1 derived somaclones, whereas no resistant plant was recoveredfrom the susceptible parents when inoculated with IB-1. The means of the leaf blast rating of R2 and R3populations of F1?s were significantly lower than those derived from susceptible parents. Similar resultswere obtained in field trials. However, the performance of the F1 derived somaclones varied depending onthe resistant donor parent. In field trials, the mean visual ratings for leaf blast of regenerants from F1derived R2 and R3 populations were significantly lower than those regenerants derived from the parentalgenotypes Maratelli and Basmati-370.
Thesagro: | Arroz; Brusone; Cultura de Tecido; Oryza Sativa; Pyricularia Grisea; Pyricularia Oryzae.
Thesaurus Nal: | Blast disease; Plant diseases and disorders; rice; tissue culture.

Categoria do assunto:

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H Saúde e Patologia

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/45686/1/pab462-96.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)

Exemplares:

AI-SEDE - (15896-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPAF - (14051-1) - UPC - AP - PP - 1998 -  - 1998 - DIS