Data/hora: 17/06/2024 02:14:12

Biblioteca(s): | Embrapa Florestas; Embrapa Gado de Corte.
Data corrente: | 25/01/2017
Data da última atualização: | 29/03/2017
Autoria: | RESENDE, R. M. S.; VALLE, C. B. do; RESENDE, M. D. V.
Afiliação: | ROSANGELA MARIA SIMEAO RESENDE, CNPGC; CACILDA BORGES DO VALLE, CNPGC; MARCOS DEON VILELA DE RESENDE, CNPF.
Título: | Unravelling the inheritance, Qst and reproductive phenology attributes of the tetraploid tropical grass Brachiaria ruziziensis (Germain et Evrard).
Ano de publicação: | 2017
Fonte/Imprenta: | Plant Breeding, v.136, n.1, p. 101-110, Feb. 2017.
Idioma: | Inglês
Conteúdo: | The autotetraploid forage Congo signal grass (Brachiaria ruziziensis) is an important component in the Brachiaria breeding programme. As with other tropical forage grass species, the association between flowering and seed yield components, the mode of inheritance and the effects of population structure on phenotypic breeding are lacking. Seventeen characteristics evaluated in 59 half-sib progeny of seven subpopulations were analysed using a mixed model methodology. According to the commonality analysis, the total seed yield (0.67) and number of days to flowering (0.22) had a greater influence on the filled-seed yield. The flowering synchrony, total number of panicles, filled-seed yield, green matter yield and dry matter yield presented statistically significant additive genetic variance between and within the subpopulations. The QST estimates ranged from 0.09 for the flowering synchrony index to 0.31 for the filled-seed yield. The effects of population structure and its use in breeding programmes are further discussed.
Palavras-Chave: | Commonality; Synchrony index.
Thesagro: | Brachiaria Ruziziensis.
Thesaurus Nal: | Flowering; Genetic correlation; Heritability; Population; Progeny testing; Seed yield.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/153951/1/unravelling-the-inheritance.pdf
Registro original: | Embrapa Gado de Corte (CNPGC)

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