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| Registros recuperados : 757 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Amapá; Embrapa Milho e Sorgo; Embrapa Unidades Centrais. |
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Data corrente: |
24/03/2006 |
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Data da última atualização: |
11/10/2022 |
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Autoria: |
RODRIGUES, M. C.; CHAVES, L. J.; PACHECO, C. A. P. |
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Afiliação: |
MARCIO COSTA RODRIGUES, CPAF-AP; LÁZARO JOSÉ CHAVES, UNIVERSIDADE FEDERAL DE GOIÁS; CLESO ANTONIO PATTO PACHECO, CNPMS. |
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Título: |
Heterosis in crosses among white grain maize populations with high quality protein. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 41, n. 1, p. 59-66, jan. 2006. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to investigate heterosis and its components in 16 white grain maize populations presenting high quality protein. These populations were divided according to grain type in order to establish different heterosis groups. The crosses were carried out according to a partial diallel cross design among flint and dent populations. Seven agronomic traits were evaluated in three environments while four leaf diseases and incidence of corn stunt were evaluated in one. Least square procedure was applied to the normal equation X'Xb = X'Y, to estimate the model effects and their respective sum of squares. Among the heterosis components, in diallel analysis, significance for average heterosis in grain yield, number of days to female flowering and to all evaluated diseases was detected. Specific heterosis was significant for days to female flowering and resistance to Puccinia polysora. Results concerned to grain yield trait indicate that populations with superior performance in dent group, no matter what flint population group is used in crosses, tend to generate superior intervarietal hybrids. In decreasing order of preference, the dent type populations CMS 476, ZQP/B 103 and ZQP/B 101 and the flint type CMS 461, CMS 460, ZQP/B 104 and ZQP/B 102 are recommended to form composites. |
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Palavras-Chave: |
capacidade geral de combinação; dialelo parcial; partial diallel. |
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Thesagro: |
Milho; Zea Mays. |
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Thesaurus NAL: |
general combining ability. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/35450/1/41n01a09.pdf
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Marc: |
LEADER 01971naa a2200217 a 4500
001 1350029
005 2022-10-11
008 2006 bl uuuu u00u1 u #d
100 1 $aRODRIGUES, M. C.
245 $aHeterosis in crosses among white grain maize populations with high quality protein.
260 $c2006
520 $aThe objective of this work was to investigate heterosis and its components in 16 white grain maize populations presenting high quality protein. These populations were divided according to grain type in order to establish different heterosis groups. The crosses were carried out according to a partial diallel cross design among flint and dent populations. Seven agronomic traits were evaluated in three environments while four leaf diseases and incidence of corn stunt were evaluated in one. Least square procedure was applied to the normal equation X'Xb = X'Y, to estimate the model effects and their respective sum of squares. Among the heterosis components, in diallel analysis, significance for average heterosis in grain yield, number of days to female flowering and to all evaluated diseases was detected. Specific heterosis was significant for days to female flowering and resistance to Puccinia polysora. Results concerned to grain yield trait indicate that populations with superior performance in dent group, no matter what flint population group is used in crosses, tend to generate superior intervarietal hybrids. In decreasing order of preference, the dent type populations CMS 476, ZQP/B 103 and ZQP/B 101 and the flint type CMS 461, CMS 460, ZQP/B 104 and ZQP/B 102 are recommended to form composites.
650 $ageneral combining ability
650 $aMilho
650 $aZea Mays
653 $acapacidade geral de combinação
653 $adialelo parcial
653 $apartial diallel
700 1 $aCHAVES, L. J.
700 1 $aPACHECO, C. A. P.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 41, n. 1, p. 59-66, jan. 2006.
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Registro original: |
Embrapa Amapá (CPAF-AP) |
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