Data/hora: 15/06/2024 18:46:01

Biblioteca(s): | Embrapa Agricultura Digital; Embrapa Arroz e Feijão.
Data corrente: | 15/07/2010
Data da última atualização: | 06/06/2022
Autoria: | ARAÚJO, L. G. de; PRABHU, A. S.; PEREIRA, P. A. A.; SILVA, G. B. da.
Afiliação: | LEILA GARCÊS DE ARAÚJO, UFG; ANNE SITARAMA PRABHU, CNPAF; PEDRO ANTONIO ARRAES PEREIRA, CNPAF; GISELE BARATA DA SILVA, UFV.
Título: | Marker-assisted selection for the rice blast resistance gene Pi-ar in a backcross population.
Ano de publicação: | 2010
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, v. 10, n. 1, p. 23-31, Mar. 2010.
Idioma: | Inglês
Conteúdo: | A doubled-haploid (DH) population, obtained by anther culture of F 1 plants from a cross between a highly susceptible rice cultivar Lijiangxintuanheigu and the resistant somaclone (SC09), of the cultivar Araguaia, was used to identify RAPD markers linked to the blast resistance gene Pi-ar. The 86 DH plants, inoculated with the race IB-9 of Magnaporthe oryzae, segregated in 1:1 ratio of resistant and susceptible plants. Of the 67 primers used 31 produced DNA profiles that differentiated resistant and susceptible bulks as well as the parental cultivars. The resistance gene was found linked to the primer OPS162072 (?AGGGGGTTCC?) at a distance of 3.6 cM. The selection efficiency of this primer was assessed in a BC3 F1 population derived from another cross between a susceptible cultivar IAC 201 and SC09. The marker OPS16 showed efficiency of 86.9%, when six resistant and two susceptible plants were considered as negatives in RAPD analysis.
Palavras-Chave: | Cultura de antera; Duplo haplóide; Marcadores moleculares; Molecular markers; Resistência à brusone do arroz.
Thesagro: | Antera; Arroz; Brusone; Doença de planta; Marcador molecular; Oryza Sativa.
Thesaurus Nal: | Anther culture; Doubled haploids; Magnaporthe grisea; Magnaporthe oryzae; Rice.

Categoria do assunto:

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H Saúde e Patologia

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/19147/1/c8eb9793.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)

Exemplares:

CNPTIA - (14909-1) - ADD - AP - PP -  -  -  - DIS
CNPAF - (30072-1) - UPC - AP - DD - 2010 -  - 2010 - DIS