Data/hora: 09/06/2024 08:25:32

Biblioteca(s): | Embrapa Agricultura Digital; Embrapa Hortaliças.
Data corrente: | 16/09/2009
Data da última atualização: | 08/10/2009
Autoria: | VIANA, J. M. S.
Título: | Selection of popcorn inbred lines based on performance and genealogy of S5 progenies and plants.
Ano de publicação: | 2009
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, Londrina, v. 9, n. 2, p. 174-180, June, 2009.
Idioma: | Inglês
Conteúdo: | The development of hybrids is the most important objective in a corn breeding program. The objectives of this study were to select and assess inbred lines, and to discuss the efficiency of four cycles of among and within inbred family selection. Two experiments were evaluated, one with 144 S5 progenies of the popcorn population Beija-Flor and another with seven inbred lines. Based on expected gains in expansion volume, the best selective procedure was mass selection. The 14 selected inbred lines should be divergent, because only two pairs were derived from the same S3 or S4 family. The analysis of selection efficiency demonstrated that it is important to select superior plants in families with poorer performance to minimize the loss of superior genotypes. The quality of the evaluated inbred lines was comparable to commercial populations and the yield satisfactory. The information about genealogy did not increase the inbred line selection efficiency.
Palavras-Chave: | Família endogâmica; Ganho genético; Gano genético; Genealogia de progênies S5; Linhagens de milho-pipoca Beija Flor; Método genealógico; Milho-pipoca; Plantas S5.
Thesagro: | Agricultura; Biotecnologia; Genética; Milho Doce; Zea Mays.

Categoria do assunto:

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G Melhoramento Genético

Registro original: | Embrapa Hortaliças (CNPH)

Exemplares:

CNPTIA - (13989-1) - ADD - AP - PP -  -  -  - DIS
CNPH - (35652-1) - ADD - AP - -- - 631.53 -  - 631.53 - DIS