Data/hora: 25/06/2024 06:04:17

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 18/09/2018
Data da última atualização: | 18/09/2018
Autoria: | SILVA, D. de C. S. da; MARTINS, M. L. L.; SANTOS, A. S.; SANTOS, V. da S.; ALVES, A. A. C.; LEDO, C. A. da S.
Afiliação: | Dreid de Cerqueira Silveira da Silva, Universidade Federal do Recôncavo da Bahia; Márcio Lacerda Lopes Martins, Universidade Federal do Recôncavo da Bahia; Ariana Silva Santos, Universidade Federal do Recôncavo da Bahia; VANDERLEI DA SILVA SANTOS, CNPMF; ALFREDO AUGUSTO CUNHA ALVES, CNPMF; CARLOS ALBERTO DA SILVA LEDO, CNPMF.
Título: | Obtaining hybrids of cultivars and wild subspecies of cassava.
Ano de publicação: | 2018
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 2, p. 182-188, fev. 2018
Idioma: | Inglês
Notas: | Título em português: Obtenção de híbridos de cultivares e de subespécies silvestres de mandioca.
Conteúdo: | The objective of this work was to evaluate the crossability between cassava (Manihot esculenta subsp. esculenta) cultivars and the subspecies M. esculenta subsp. flabellifolia and M. esculenta subsp. peruviana. Plants from the BRS Jari, BRS Formosa, BRS Verdinha, and BGM 2050 (Equador 72) cultivars were crossed with the two subspecies. During flowering, at pre-anthesis, pistillate flowers were covered with a nylon bag and staminate flowers on the same inflorescence were emasculated. The staminate flowers were collected and placed in flasks previously labeled and sterilized with alcohol; some fresh flowers were stored at room temperature due to asynchronous flowering. The crosses were made between 10 a.m. and 2 p.m. After pollination, the flowers were covered again. Evaluations were made from the moment of pollination to the dehiscence of the fruit. Of the total flowers pollinated, 38% were fertilized, and 504 developed fruits and 816 produced seeds were observed. As a male parent, M. esculenta subsp. flabellifolia is more efficient in crosses with M. esculenta subsp. esculenta and may be recommend for controlled crosses. The crosses between the cassava cultivars and M. esculenta subsp. flabellifolia and M. esculenta subsp. peruviana produce viable seeds.
Palavras-Chave: | Controlled pollination; Melhoramento de plantas; Parentes silvestres; Wild relative species.
Thesagro: | Híbrido; Mandioca; Manihot Esculenta.
Thesaurus Nal: | Cassava; Hybrids; Plant breeding.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (32486-1) - UPC - SP - DD - Publicação digital -  -  - DIS