Data/hora: 02/06/2024 17:54:09

Biblioteca(s): | Embrapa Gado de Corte.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 2
Data corrente: | 30/03/2011
Data da última atualização: | 03/05/2011
Autoria: | DUSI, D. M. de A.; WILLEMSE, M. T. M.; VALLE, C. B. do.
Afiliação: | DIVA MARIA DE ALENCAR DUSI, CENARGEN; MICHIEL T. M. WILLEMSE, Wageningen University and Research Centre, Wageningen, The Netherlands; CACILDA BORGES DO VALLE, CNPGC.
Título: | Toward in vitro fertilization in Brachiaria spp.
Ano de publicação: | 2010
Fonte/Imprenta: | Sexual Plant Reproduction, v. 23, n.3, p.187-197, Sept. 2010.
Idioma: | Inglês

Conteúdo:

Brachiaria are forage grasses widely cultivated in tropical areas. In vitro pollination was applied to accessions of Brachiaria spp. by placing pollen of nondehiscent
anthers on a solid medium near isolated ovaries. Viability and in vitro germination were tested in order to establish good conditions for pollen development. Comparing
sexual to apomictic plants, apomictic pollen has more abortion after meiosis during the microspore stage and a lower viability and, of both types, only some plants
have sufficient germination in a high sugar concentration. Using in vitro pollination with the sexual plant, the pollen tube penetrates into the nucellus and micropyle, but the
embryo sac degenerates and collapses. In the apomictic B. decumbens, in vitro pollination leads to the transfer of the sperm nuclei into the egg cell and the central cell. The
results are discussed according to normal fertilization and barriers in sexual and apomictic plants.

Thesagro: | Brachiaria; Melhoramento Genético Vegetal; Pastagem.
Categoria do assunto: | K Ciência Florestal e Produtos de Origem Vegetal
Registro original: | Embrapa Gado de Corte (CNPGC)
Exemplares: | CNPGC - (13846-1) - UPC - SP - PP -  -  - 003/006 - DIS