Data/hora: 01/06/2024 10:19:46

Biblioteca(s): | Embrapa Milho e Sorgo.
Data corrente: | 03/10/2016
Data da última atualização: | 25/04/2017
Autoria: | MIRANDA FILHO, J. B.; REIS, E. F.
Afiliação: | JOSÉ BRANCO MIRANDA FILHO, ESALQ, PIRACICABA, SP.; EDÉSIO FIALHO REIS, UFG, Regional Jataí, GO.
Título: | Genetic enhancement of semi-exotic maize germplasm.
Ano de publicação: | 2016
Fonte/Imprenta: | Revista Brasileira de Milho e Sorgo, Sete Lagoas, v. 15, n. 2, p. 346-356, 2016.
DOI: | 10.18512/1980-6477/rbms.v15n2p346-356
Idioma: | Inglês
Conteúdo: | The characterization of 26 populations with varying levels of exotic germplasm was conducted in two environments representing distinct locations and planting seasons. The whole set was identified by five subsets: I - local adapted germplasm; II - exotic derived from tropical germplasm; III - semi-exotic derived from tropical germplasm; IV - semi-exotic derived from varying proportion of tropical and temperate germplasm; and V - semi-exotic derived from temperate germplasm. In the experiment -I (Anhembi, SP; three replications) the mean yield (EW - ear weight, t ha-1) for the five sets were 9.49, 8.88, 9.11, 8.68 and 8.51; which are equivalent to 79.5, 74.4, 76.3, 72.7 and 71.3 in percent of the hybrid check. Means for other traits (E10-weight of ten ears, EL-ear length, ED - ear diameter, and TB - tassel branch number) were also shown. In the experiment -II (Piracicaba, SP; no replications), the following traits were evaluated: EW, GW (grain weight), GR (grain yield ratio), MF (days to male flowering), and SW (specific weight). A low correlation (0.220) was observed for EW between environments. In general, the populations under study presented a fairly good potential to be used in breeding programs.
Palavras-Chave: | Exotic germplasm; Population improvement.
Thesagro: | Germoplasma; Melhoramento vegetal; Milho.
Thesaurus Nal: | Plant breeding.
Categoria do assunto: | G Melhoramento Genético
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (27244-1) - ADD - AP - DD -  -  -  - DIS