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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
06/07/1997 |
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Data da última atualização: |
19/07/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VIANNA, R. T.; GAMA, E. E. G. e; NASPOLINI FILHO, V.; MORO, J. R.; VENCOVSKY, R. |
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Afiliação: |
EMBRAPA/CNPMS. |
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Título: |
Inbreeding depression of several introduced populations of maize (Zea mays L.). |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Maydica, Bergamo, v. 27, n. 3, p. 151-157, 1982. |
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Idioma: |
Inglês |
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Conteúdo: |
An inbreeding depression study was conducted with 14 maize populations introduced from CIMMYT to the National Corn and Sorghum Research Center, Sete Lagoas, MG, Brasil. It was initiated by selfing 200 unselected So plants per populations and from each 100 ears were selected. The S1 generation of each population was represented by a mixture of 100 kernels from each of the 100 selected ears. Experiments were conducted in 1979 at two locations to evaluated yield change associated with inbreeding by selfing. A drought period caused considerable yield reduction a Piracicaba. In these populations, with inbreeding due to only one selfing generation, mean yield reduction ranged from 31 to 65% and 44 to 69% at Sete Lagoas and Piracicaba, respectively. In bothlocalization a significant interaction between population ans inbreeding depression was observed. In general materials grown under moisture stress did not respond the same as under non stress conditions. In the non stress environment data confirmed that the synthetic variety showed a significant lower inbreeding depression than broad basis populations. |
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Palavras-Chave: |
Maize. |
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Thesagro: |
Melhoramento; Milho; Zea Mays. |
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Thesaurus Nal: |
breeding. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01738naa a2200229 a 4500
001 1475706
005 2018-07-19
008 1982 bl uuuu u00u1 u #d
100 1 $aVIANNA, R. T.
245 $aInbreeding depression of several introduced populations of maize (Zea mays L.).$h[electronic resource]
260 $c1982
520 $aAn inbreeding depression study was conducted with 14 maize populations introduced from CIMMYT to the National Corn and Sorghum Research Center, Sete Lagoas, MG, Brasil. It was initiated by selfing 200 unselected So plants per populations and from each 100 ears were selected. The S1 generation of each population was represented by a mixture of 100 kernels from each of the 100 selected ears. Experiments were conducted in 1979 at two locations to evaluated yield change associated with inbreeding by selfing. A drought period caused considerable yield reduction a Piracicaba. In these populations, with inbreeding due to only one selfing generation, mean yield reduction ranged from 31 to 65% and 44 to 69% at Sete Lagoas and Piracicaba, respectively. In bothlocalization a significant interaction between population ans inbreeding depression was observed. In general materials grown under moisture stress did not respond the same as under non stress conditions. In the non stress environment data confirmed that the synthetic variety showed a significant lower inbreeding depression than broad basis populations.
650 $abreeding
650 $aMelhoramento
650 $aMilho
650 $aZea Mays
653 $aMaize
700 1 $aGAMA, E. E. G. e
700 1 $aNASPOLINI FILHO, V.
700 1 $aMORO, J. R.
700 1 $aVENCOVSKY, R.
773 $tMaydica, Bergamo$gv. 27, n. 3, p. 151-157, 1982.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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