| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Arroz e Feijão. |
|
Data corrente: |
13/10/2004 |
|
Data da última atualização: |
18/10/2004 |
|
Autoria: |
HAMAWAKI, O. T.; VELLO, N. A.; JULIATTI, F. C. |
|
Título: |
Genetic analyses of agronomic traits in F4:3[8] and F5:3[8] progenies derived from eight-parent soybean crosses. |
|
Ano de publicação: |
2002 |
|
Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 2, p. 265-273, June 2002. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The utilization of exotic germplasm comprises a strategy for improving the genetic diversity soybean cultivars, whose present narrowness is a main limitation in soybean breeding programs that utilize two-way crosses between homozygous pure lines. Progenies from forty-five soybean crosses obtained through the combination of eight parents (octuple crosses) in a chain mating system were evaluated in the F4:3(8) generation for grain yield and other agronomic important traits. The octuple crosses included both adapted and exotic parents mated in a chain system during three generations to assemble a group of materials with the proportion of 75%: 25% of genes stemming from adapted and exotic parents, respectively. In addition to this, adapted parents were selected to form a second gropu with 100% adapted germplasm. The F4:3(8) progenies were evaluated in an augmented block design in the 1994/95 growing season. The F5:3(8) progenies were evaluated in six experiments during the 1995/96 growing season. Three augmented block designs (without replications) and three complete randomized.-block designs with two or three replications were used. The analyses of the results indicate that octuple crosses produced superior progenies for all the traits studied, especially grain yield which presented the excellent mean yield of 5.530 kg/ha. Remmant genetic variability amongst selected progenies in some crosses allowed the prediction of additional gains for grain yield through selection in more advanced cycles. MenosThe utilization of exotic germplasm comprises a strategy for improving the genetic diversity soybean cultivars, whose present narrowness is a main limitation in soybean breeding programs that utilize two-way crosses between homozygous pure lines. Progenies from forty-five soybean crosses obtained through the combination of eight parents (octuple crosses) in a chain mating system were evaluated in the F4:3(8) generation for grain yield and other agronomic important traits. The octuple crosses included both adapted and exotic parents mated in a chain system during three generations to assemble a group of materials with the proportion of 75%: 25% of genes stemming from adapted and exotic parents, respectively. In addition to this, adapted parents were selected to form a second gropu with 100% adapted germplasm. The F4:3(8) progenies were evaluated in an augmented block design in the 1994/95 growing season. The F5:3(8) progenies were evaluated in six experiments during the 1995/96 growing season. Three augmented block designs (without replications) and three complete randomized.-block designs with two or three replications were used. The analyses of the results indicate that octuple crosses produced superior progenies for all the traits studied, especially grain yield which presented the excellent mean yield of 5.530 kg/ha. Remmant genetic variability amongst selected progenies in some crosses allowed the prediction of additional gains for grain yield through selection in more ... Mostrar Tudo |
|
Palavras-Chave: |
Análise genética; Cruzamento óctuplo; Multiple crosses. |
|
Thesagro: |
Germoplasma; Glycine Max; Soja. |
|
Thesaurus Nal: |
grain yield. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02209naa a2200229 a 4500
001 1212574
005 2004-10-18
008 2002 bl uuuu u00u1 u #d
100 1 $aHAMAWAKI, O. T.
245 $aGenetic analyses of agronomic traits in F4$b3[8] and F5:3[8] progenies derived from eight-parent soybean crosses.
260 $c2002
520 $aThe utilization of exotic germplasm comprises a strategy for improving the genetic diversity soybean cultivars, whose present narrowness is a main limitation in soybean breeding programs that utilize two-way crosses between homozygous pure lines. Progenies from forty-five soybean crosses obtained through the combination of eight parents (octuple crosses) in a chain mating system were evaluated in the F4:3(8) generation for grain yield and other agronomic important traits. The octuple crosses included both adapted and exotic parents mated in a chain system during three generations to assemble a group of materials with the proportion of 75%: 25% of genes stemming from adapted and exotic parents, respectively. In addition to this, adapted parents were selected to form a second gropu with 100% adapted germplasm. The F4:3(8) progenies were evaluated in an augmented block design in the 1994/95 growing season. The F5:3(8) progenies were evaluated in six experiments during the 1995/96 growing season. Three augmented block designs (without replications) and three complete randomized.-block designs with two or three replications were used. The analyses of the results indicate that octuple crosses produced superior progenies for all the traits studied, especially grain yield which presented the excellent mean yield of 5.530 kg/ha. Remmant genetic variability amongst selected progenies in some crosses allowed the prediction of additional gains for grain yield through selection in more advanced cycles.
650 $agrain yield
650 $aGermoplasma
650 $aGlycine Max
650 $aSoja
653 $aAnálise genética
653 $aCruzamento óctuplo
653 $aMultiple crosses
700 1 $aVELLO, N. A.
700 1 $aJULIATTI, F. C.
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 2, n. 2, p. 265-273, June 2002.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Meio-Norte. |
|
Data corrente: |
10/08/2021 |
|
Data da última atualização: |
29/09/2021 |
|
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
|
Autoria: |
BENAZZI, E. dos S.; LEITE, L. F. C. |
|
Afiliação: |
ELOÍSA DOS SANTOS BENAZZI, Diretora de Desenvolvimento Sustentável da Prefeitura de Paracambi, Paracambi, RJ; LUIZ FERNANDO CARVALHO LEITE, CPAMN. |
|
Título: |
Solo e o complexo desafio da segurança alimentar. |
|
Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
In: SOUZA, H. A. de; LEITE, L. F. C.; MEDEIROS, J. C. (Ed.). Solos sustentáveis para a agricultura no Nordeste. Brasília, DF: Embrapa, 2021. Parte 1, Cap. 1, p. 25-52. |
|
Idioma: |
Português |
|
Notas: |
Autoria no capitulo: ELOÍSA BENAZZI. |
|
Conteúdo: |
Introdução; O recurso solo: aspectos globais e importância; Ameaças à saúde do solo e à segurança alimentar; Biodiversidade e serviços ecossistêmicos: auxiliares na segurança alimentar; Solo saudável para a produção de alimentos. |
|
Palavras-Chave: |
Mudanças climáticas; Recurso solo. |
|
Thesagro: |
Manejo do Solo; Segurança Alimentar. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225006/1/SolosSuastentaveisPt1.Cap1.P25a52.pdf
|
|
Marc: |
LEADER 00936naa a2200193 a 4500
001 2133397
005 2021-09-29
008 2021 bl uuuu u00u1 u #d
100 1 $aBENAZZI, E. dos S.
245 $aSolo e o complexo desafio da segurança alimentar.$h[electronic resource]
260 $c2021
500 $aAutoria no capitulo: ELOÍSA BENAZZI.
520 $aIntrodução; O recurso solo: aspectos globais e importância; Ameaças à saúde do solo e à segurança alimentar; Biodiversidade e serviços ecossistêmicos: auxiliares na segurança alimentar; Solo saudável para a produção de alimentos.
650 $aManejo do Solo
650 $aSegurança Alimentar
653 $aMudanças climáticas
653 $aRecurso solo
700 1 $aLEITE, L. F. C.
773 $tIn: SOUZA, H. A. de; LEITE, L. F. C.; MEDEIROS, J. C. (Ed.). Solos sustentáveis para a agricultura no Nordeste. Brasília, DF: Embrapa, 2021. Parte 1, Cap. 1, p. 25-52.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio-Norte (CPAMN) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
