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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
15/10/2004 |
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Data da última atualização: |
26/10/2004 |
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Autoria: |
MURAKAMI, D. M.; CRUZ, C. D. |
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Título: |
Proposal of methodology to assess the representativeness of environments for genotypic discrimination. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 3, p. 325-330, Sept. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
In this work, a methodology is proposed for evaluating environment representatitivity through genotypic performance (grain productivity, kg/ha) of commercial corn hybrids and the use of the determination coefficient (R2) as a referential for a likely successful search for representative sites. The methodology is based on the adoption of procedures similar to those adopted in the diallelic analysis, as proposed by Griffing (1956), in which the data evaluated are measurements of dissimilarity between enrivonment pairs. For this, several experiments were assessed during 3 different seasons: a) two in the autumn (alternative) growing season of 1996 and 1997; and, b) one in the summer (normal) growing season of 1996/97. All the experiments were arranged in a randomized block design, with three repetitions.The methodology made possible the identification of that (those) envronment(s) presenting greater overall capacity for environmental representativeness and the one wich best replaces it (them) during the three seasons. It was concluded that thiis methodology was effective for the purposes established as well as being easily interpreted and implemented. |
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Palavras-Chave: |
Diallelic analysis; Discriminação genotípica; Environmental representativeness; Maize. |
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Thesagro: |
Milho. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01780naa a2200193 a 4500
001 1212592
005 2004-10-26
008 2002 bl uuuu u00u1 u #d
100 1 $aMURAKAMI, D. M.
245 $aProposal of methodology to assess the representativeness of environments for genotypic discrimination.
260 $c2002
520 $aIn this work, a methodology is proposed for evaluating environment representatitivity through genotypic performance (grain productivity, kg/ha) of commercial corn hybrids and the use of the determination coefficient (R2) as a referential for a likely successful search for representative sites. The methodology is based on the adoption of procedures similar to those adopted in the diallelic analysis, as proposed by Griffing (1956), in which the data evaluated are measurements of dissimilarity between enrivonment pairs. For this, several experiments were assessed during 3 different seasons: a) two in the autumn (alternative) growing season of 1996 and 1997; and, b) one in the summer (normal) growing season of 1996/97. All the experiments were arranged in a randomized block design, with three repetitions.The methodology made possible the identification of that (those) envronment(s) presenting greater overall capacity for environmental representativeness and the one wich best replaces it (them) during the three seasons. It was concluded that thiis methodology was effective for the purposes established as well as being easily interpreted and implemented.
650 $aMilho
653 $aDiallelic analysis
653 $aDiscriminação genotípica
653 $aEnvironmental representativeness
653 $aMaize
700 1 $aCRUZ, C. D.
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 2, n. 3, p. 325-330, Sept. 2002.
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Embrapa Arroz e Feijão (CNPAF) |
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