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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
28/05/2002 |
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Data da última atualização: |
28/05/2002 |
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Autoria: |
TEIXEIRA, M. G. |
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Título: |
Effect of day length on associations between seed yield and developmental traits in soybeans (Glycine max (L.) Merril). |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
1977. |
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Páginas: |
63 f. |
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Idioma: |
Inglês |
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Notas: |
Thesis (Master of Science) - University of Florida, [S. l.]. |
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Conteúdo: |
The purpose of this study was to determine associations between various morphological and developmental characters and yield of 12 soybean genotypes when planted on june 1 and also to determine the extent to which these same charaters could be used to predict the yield of soybeans planted July 26. The July 26 planting date was chosen to simulate June 1 day lengths at about 200 N latitude. The same 12 genotypes, chosen to represent a wide renge in latitude adaptation, were replicated three in four-or six-row plots in three Planting Treatments (PT) designated A, B, and C. PT A was planted 1 in 90-cm rows; PTS B and C were planted July 26 in 90-and 60-cm rows, respectively. Characters on which data were collectyed were seven time sequence variables, eight stem development variables, and nine miscellaneous variables. Analyses of variance showed significant differences among cultivars for nearly all characters measured in each planting treatment. All time sequence variables were negatively correlated with yield in PT .This suggests that the growing season for many of the 12 genotypes was longer than was needed for maximum yield. In a stepwise regression model, days to beginning flower, days to beginning seed enlargement, days to maturity, and number of days flowering were assaciated wich 86 of the yield variability in PT ª However, data on these variables, measured in PT A were associated with 34 of the yield varialility in PT B. Adding more variables did not significantly increase R2 values. In Pt C, planted in 60 cm rows on July 26, 64% of the yield variability was associated with the following PT A variables: days to first pods 4 cm long. In stewise regression models dealing wich stem variables measured in PT A, three variables were associated wich 87 % of the yield variability of PT A, three were associated with 72% of the yield variability in PT C. Adding additional variables in PT B and incresed R2 values very little. Three miscellaneous variables measured in PT A were associated with 90% of the yield variability in PT A, five were associated with 72% of the yield variability in PT B and three were associated with 65% of the yield variability in PT C. Some variables were negatively associated with yield PT A, but positively associated in PT B or C. The row with differences in PT B and C significantly influenced the extent to which some variables in PT A were associated with yield in B or C. The results indicate that measurements made on early planted soybeans may be used effectively in selecting for yield in later plantings or in selecting for a higher yield potential at lower latitudes. MenosThe purpose of this study was to determine associations between various morphological and developmental characters and yield of 12 soybean genotypes when planted on june 1 and also to determine the extent to which these same charaters could be used to predict the yield of soybeans planted July 26. The July 26 planting date was chosen to simulate June 1 day lengths at about 200 N latitude. The same 12 genotypes, chosen to represent a wide renge in latitude adaptation, were replicated three in four-or six-row plots in three Planting Treatments (PT) designated A, B, and C. PT A was planted 1 in 90-cm rows; PTS B and C were planted July 26 in 90-and 60-cm rows, respectively. Characters on which data were collectyed were seven time sequence variables, eight stem development variables, and nine miscellaneous variables. Analyses of variance showed significant differences among cultivars for nearly all characters measured in each planting treatment. All time sequence variables were negatively correlated with yield in PT .This suggests that the growing season for many of the 12 genotypes was longer than was needed for maximum yield. In a stepwise regression model, days to beginning flower, days to beginning seed enlargement, days to maturity, and number of days flowering were assaciated wich 86 of the yield variability in PT ª However, data on these variables, measured in PT A were associated with 34 of the yield varialility in PT B. Adding more variables did not significantly incr... Mostrar Tudo |
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Palavras-Chave: |
Insolation; Lightining; Maturation; Photoperiocity; Seed. |
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Thesagro: |
Fisiologia; Fotoperiodismo; Glycine Max; Iluminação; Insolação; Maturação; Rendimento; Semente; Soja. |
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Thesaurus Nal: |
plant physiology; soybeans; yields. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03531nam a2200337 a 4500
001 1564898
005 2002-05-28
008 1977 bl uuuu m 00u1 u #d
100 1 $aTEIXEIRA, M. G.
245 $aEffect of day length on associations between seed yield and developmental traits in soybeans (Glycine max (L.) Merril).
260 $a1977.$c1977
300 $a63 f.
500 $aThesis (Master of Science) - University of Florida, [S. l.].
520 $aThe purpose of this study was to determine associations between various morphological and developmental characters and yield of 12 soybean genotypes when planted on june 1 and also to determine the extent to which these same charaters could be used to predict the yield of soybeans planted July 26. The July 26 planting date was chosen to simulate June 1 day lengths at about 200 N latitude. The same 12 genotypes, chosen to represent a wide renge in latitude adaptation, were replicated three in four-or six-row plots in three Planting Treatments (PT) designated A, B, and C. PT A was planted 1 in 90-cm rows; PTS B and C were planted July 26 in 90-and 60-cm rows, respectively. Characters on which data were collectyed were seven time sequence variables, eight stem development variables, and nine miscellaneous variables. Analyses of variance showed significant differences among cultivars for nearly all characters measured in each planting treatment. All time sequence variables were negatively correlated with yield in PT .This suggests that the growing season for many of the 12 genotypes was longer than was needed for maximum yield. In a stepwise regression model, days to beginning flower, days to beginning seed enlargement, days to maturity, and number of days flowering were assaciated wich 86 of the yield variability in PT ª However, data on these variables, measured in PT A were associated with 34 of the yield varialility in PT B. Adding more variables did not significantly increase R2 values. In Pt C, planted in 60 cm rows on July 26, 64% of the yield variability was associated with the following PT A variables: days to first pods 4 cm long. In stewise regression models dealing wich stem variables measured in PT A, three variables were associated wich 87 % of the yield variability of PT A, three were associated with 72% of the yield variability in PT C. Adding additional variables in PT B and incresed R2 values very little. Three miscellaneous variables measured in PT A were associated with 90% of the yield variability in PT A, five were associated with 72% of the yield variability in PT B and three were associated with 65% of the yield variability in PT C. Some variables were negatively associated with yield PT A, but positively associated in PT B or C. The row with differences in PT B and C significantly influenced the extent to which some variables in PT A were associated with yield in B or C. The results indicate that measurements made on early planted soybeans may be used effectively in selecting for yield in later plantings or in selecting for a higher yield potential at lower latitudes.
650 $aplant physiology
650 $asoybeans
650 $ayields
650 $aFisiologia
650 $aFotoperiodismo
650 $aGlycine Max
650 $aIluminação
650 $aInsolação
650 $aMaturação
650 $aRendimento
650 $aSemente
650 $aSoja
653 $aInsolation
653 $aLightining
653 $aMaturation
653 $aPhotoperiocity
653 $aSeed
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 604 | |
| 3. |  | TEIXEIRA, M. C. C. Efeito de estresse na cultura de milho. Agrolink, 2007. Também publicado: Portal do Agronegócio, Viçosa, 23 jan. 2007. Disponível em . ; Zoonews, 25 jan. 2007. Disponível em .| Tipo: Artigo de Divulgação na Mídia | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Trigo. |
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| 15. | | EMYGDIO, B. M.; TEIXEIRA, M. C. C. Análise de trilha de descritores do pendão em linhagens de milho. In: CONGRESSO NACIONAL DE MILHO E SORGO, 27.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 3.; WORKSHOP SOBRE MANEJO E ETIOLOGIA DA MANCHA BRANCA DO MILHO, 2008, Londrina. Agroenergia, produção de alimentos e mudanças climáticas: desafios para milho e sorgo. Trabalhos e palestras... Londrina: IAPAR; Sete Lagoas: Embrapa Milho e Sorgo, 2008. 1 CD-ROM. 5 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado; Embrapa Trigo. |
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| 16. | | TEIXEIRA, M. do R. de O. BRS 181. Dourados: Embrapa Agropecuária Oeste, 2000. 1 Folder.| Tipo: Folder/Folheto/Cartilha |
| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| Registros recuperados : 604 | |
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