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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Hortaliças. |
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Data corrente: |
16/09/2009 |
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Data da última atualização: |
08/10/2009 |
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Autoria: |
VIANA, J. M. S. |
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Título: |
Selection of popcorn inbred lines based on performance and genealogy of S5 progenies and plants. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 9, n. 2, p. 174-180, June, 2009. |
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Idioma: |
Inglês |
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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. |
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Palavras-Chave: |
Família endogâmica; Ganho genético; Gano genético; Genealogia de progênies S5; Linhagens de milho-pipoca Beija Flor; Método genealógico; Milho-pipoca; Plantas S5. |
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Thesagro: |
Agricultura; Biotecnologia; Genética; Milho Doce; Zea Mays. |
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Categoria do assunto: |
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G Melhoramento Genético |
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Marc: |
LEADER 01797naa a2200277 a 4500
001 1782559
005 2009-10-08
008 2009 bl uuuu u00u1 u #d
100 1 $aVIANA, J. M. S.
245 $aSelection of popcorn inbred lines based on performance and genealogy of S5 progenies and plants.
260 $c2009
520 $aThe 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.
650 $aAgricultura
650 $aBiotecnologia
650 $aGenética
650 $aMilho Doce
650 $aZea Mays
653 $aFamília endogâmica
653 $aGanho genético
653 $aGano genético
653 $aGenealogia de progênies S5
653 $aLinhagens de milho-pipoca Beija Flor
653 $aMétodo genealógico
653 $aMilho-pipoca
653 $aPlantas S5
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 9, n. 2, p. 174-180, June, 2009.
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Embrapa Hortaliças (CNPH) |
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