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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
10/09/2015 |
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Data da última atualização: |
03/11/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MOREIRA, A.; MORAES, L. A. C.; SCHROTH, G.; MANDARINO, J. M. G. |
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Afiliação: |
ADONIS MOREIRA, CNPSO; LARISSA ALEXANDRA CARDOSO MORAES, CNPSO; GÖTZ SCHROTH; JOSE MARCOS GONTIJO MANDARINO, CNPSO. |
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Título: |
Effect of nitrogen, row spacing, and plant density on yield, yield components, and plant physiology in soybean-wheat intercropping. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Agronomy Journal, v. 107, n. 6, p. 2162-2170, Aug. 2015. |
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DOI: |
10.2134/agronj15.0121 |
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Idioma: |
Português |
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Conteúdo: |
The introduction of cultivars with earlier development and greater productivity has raised questions about the effect of management practices on soybean [Glycine max (L.) Merr] yield in a no-till (NT) system. The objective of the study was to evaluate the interaction between N fertilization, row spacing, and plant density on photosynthetic index, yield components, yield, and nutritional status of soybean–wheat (Triticum aestivum L.) intercropping. For soybean cultivation, three N rates, three row spacing, and three planting densities were assessed during two growing seasons, while for wheat, 17.5-cm row spacing and no N fertilization were used. No significant effects of row spacing and plant density were detected. The yields for 0 and 40 kg N ha–1 rates were similar, while applying 20 kg N ha–1 reduced, on average, soybean yield by 14.5%. The planting densities, row spacing, and N rates did not affect wheat yield, or oil and protein content in soybean seeds. Soil temperature (ST), intercellular carbon dioxide concentration (Ci), and intrinsic water use efficiency (IWUE) increased, while plant height, chlorophyll content (CC), and transpiration rate (Trmmol) decreased with increasing spacing of soybean. Plant density changed ST, Ci, chlorophyll content, and stomatal conductance (gs). Leaf tissue analysis indicated adequate nutrient levels in soybean and wheat. The current management practice with 50-cm row spacing, no N fertilization to complement biological nitrogen fixation (BNF), and 333,000 plants ha–1 is adequate for soybean cultivation, while N supplied from soil organic matter (SOM) and BNF is sufficient to meet requirements of associated wheat crops. MenosThe introduction of cultivars with earlier development and greater productivity has raised questions about the effect of management practices on soybean [Glycine max (L.) Merr] yield in a no-till (NT) system. The objective of the study was to evaluate the interaction between N fertilization, row spacing, and plant density on photosynthetic index, yield components, yield, and nutritional status of soybean–wheat (Triticum aestivum L.) intercropping. For soybean cultivation, three N rates, three row spacing, and three planting densities were assessed during two growing seasons, while for wheat, 17.5-cm row spacing and no N fertilization were used. No significant effects of row spacing and plant density were detected. The yields for 0 and 40 kg N ha–1 rates were similar, while applying 20 kg N ha–1 reduced, on average, soybean yield by 14.5%. The planting densities, row spacing, and N rates did not affect wheat yield, or oil and protein content in soybean seeds. Soil temperature (ST), intercellular carbon dioxide concentration (Ci), and intrinsic water use efficiency (IWUE) increased, while plant height, chlorophyll content (CC), and transpiration rate (Trmmol) decreased with increasing spacing of soybean. Plant density changed ST, Ci, chlorophyll content, and stomatal conductance (gs). Leaf tissue analysis indicated adequate nutrient levels in soybean and wheat. The current management practice with 50-cm row spacing, no N fertilization to complement biological nitrogen fixation... Mostrar Tudo |
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Thesagro: |
Soja; Trigo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02308naa a2200193 a 4500
001 2023686
005 2017-11-03
008 2015 bl uuuu u00u1 u #d
024 7 $a10.2134/agronj15.0121$2DOI
100 1 $aMOREIRA, A.
245 $aEffect of nitrogen, row spacing, and plant density on yield, yield components, and plant physiology in soybean-wheat intercropping.$h[electronic resource]
260 $c2015
520 $aThe introduction of cultivars with earlier development and greater productivity has raised questions about the effect of management practices on soybean [Glycine max (L.) Merr] yield in a no-till (NT) system. The objective of the study was to evaluate the interaction between N fertilization, row spacing, and plant density on photosynthetic index, yield components, yield, and nutritional status of soybean–wheat (Triticum aestivum L.) intercropping. For soybean cultivation, three N rates, three row spacing, and three planting densities were assessed during two growing seasons, while for wheat, 17.5-cm row spacing and no N fertilization were used. No significant effects of row spacing and plant density were detected. The yields for 0 and 40 kg N ha–1 rates were similar, while applying 20 kg N ha–1 reduced, on average, soybean yield by 14.5%. The planting densities, row spacing, and N rates did not affect wheat yield, or oil and protein content in soybean seeds. Soil temperature (ST), intercellular carbon dioxide concentration (Ci), and intrinsic water use efficiency (IWUE) increased, while plant height, chlorophyll content (CC), and transpiration rate (Trmmol) decreased with increasing spacing of soybean. Plant density changed ST, Ci, chlorophyll content, and stomatal conductance (gs). Leaf tissue analysis indicated adequate nutrient levels in soybean and wheat. The current management practice with 50-cm row spacing, no N fertilization to complement biological nitrogen fixation (BNF), and 333,000 plants ha–1 is adequate for soybean cultivation, while N supplied from soil organic matter (SOM) and BNF is sufficient to meet requirements of associated wheat crops.
650 $aSoja
650 $aTrigo
700 1 $aMORAES, L. A. C.
700 1 $aSCHROTH, G.
700 1 $aMANDARINO, J. M. G.
773 $tAgronomy Journal$gv. 107, n. 6, p. 2162-2170, Aug. 2015.
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Registro original: |
Embrapa Soja (CNPSO) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia; Embrapa Meio-Norte. |
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Data corrente: |
11/08/2014 |
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Data da última atualização: |
25/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
RAPOSO, R. S.; SOUZA, I. G. B.; VELOSO, M. E. da C.; KOBAYASHI, A. K.; LAVIOLA, B. G.; DINIZ, F. M. |
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Afiliação: |
R.S. Raposo, Universidade Federal do Ceara, Núcleo de Biologia Experimental.; I.G.B. Souza, Universidade Federal do Piauí.; MARCOS EMANUEL DA COSTA VELOSO, CPAMN; ADILSON KENJI KOBAYASHI, CNPAE; BRUNO GALVEAS LAVIOLA, CNPAE; FABIO MENDONCA DINIZ, CPAMN. |
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Título: |
Development of novel simple sequence repeat markers from a genomic sequence survey database and their application for diversity assessment in Jatropha curcas germplasm from Guatemala. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Genetics and Molecular Research, Ribeirão Preto, v. 13, n. 3, p. 6099-6106, Aug. 2014. |
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DOI: |
http://dx.doi.org/10.4238/2014.August.7.25 |
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Idioma: |
Inglês |
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Conteúdo: |
The last few years have seen a significant increase in the number of large-scale sequencing projects generating whole genome databases. These sequence databases can be surveyed (genome sequence survey) for tandem repeats as an alternative means to develop microsatellites for monitoring and selecting natural populations and cultivars of Jatropha curcas. A total of 100 tandem repeats were revealed from mining 368 genomic surveyed sequences available in the Kazusa DNA Research Institute database. Twenty microsatellite sequences were successfully amplified, resulting in repeatable and scorable polymerase chain reaction products. Genotyping of J. curcas accessions from the Guatemalan population revealed 18 polymorphic loci. The average number of alleles per locus was 6.9, and allelic sizes ranged from 94 to 299 bp. Expected and observed heterozygosities ranged from 0.118 to 0.906 and from 0.082 to 0.794, respectively. Polymorphic information content values ranged from 0.114 (JcSSR-34) to 0.886 (JcSSR-33) with an average of 0.627. Analysis with Micro-Checker indicated few null alleles for locus JcSSR-37 in Guatemalan populations, which may be a possible cause of its deviation from Hardy-Weinberg equilibrium, even after Bonferroni?s correction. No loci showed significant linkage disequilibrium. These microsatellite loci are expected to be valuable molecular markers in J. curcas because they show high levels of polymorphism and heterozygosity. |
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Palavras-Chave: |
Biofuel; Energy crop; Genetic diversity; Microsatellites; Microssatélite; Physic nut. |
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Thesagro: |
Biocombustível; Cultura energética; Euphorbiaceae; Pinhão de purga; Planta oleaginosa. |
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Categoria do assunto: |
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G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/125432/1/ArtigoMarcosFabioGMR2014.pdf
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Marc: |
LEADER 02543naa a2200325 a 4500
001 2017730
005 2022-05-25
008 2014 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4238/2014.August.7.25$2DOI
100 1 $aRAPOSO, R. S.
245 $aDevelopment of novel simple sequence repeat markers from a genomic sequence survey database and their application for diversity assessment in Jatropha curcas germplasm from Guatemala.$h[electronic resource]
260 $c2014
520 $aThe last few years have seen a significant increase in the number of large-scale sequencing projects generating whole genome databases. These sequence databases can be surveyed (genome sequence survey) for tandem repeats as an alternative means to develop microsatellites for monitoring and selecting natural populations and cultivars of Jatropha curcas. A total of 100 tandem repeats were revealed from mining 368 genomic surveyed sequences available in the Kazusa DNA Research Institute database. Twenty microsatellite sequences were successfully amplified, resulting in repeatable and scorable polymerase chain reaction products. Genotyping of J. curcas accessions from the Guatemalan population revealed 18 polymorphic loci. The average number of alleles per locus was 6.9, and allelic sizes ranged from 94 to 299 bp. Expected and observed heterozygosities ranged from 0.118 to 0.906 and from 0.082 to 0.794, respectively. Polymorphic information content values ranged from 0.114 (JcSSR-34) to 0.886 (JcSSR-33) with an average of 0.627. Analysis with Micro-Checker indicated few null alleles for locus JcSSR-37 in Guatemalan populations, which may be a possible cause of its deviation from Hardy-Weinberg equilibrium, even after Bonferroni?s correction. No loci showed significant linkage disequilibrium. These microsatellite loci are expected to be valuable molecular markers in J. curcas because they show high levels of polymorphism and heterozygosity.
650 $aBiocombustível
650 $aCultura energética
650 $aEuphorbiaceae
650 $aPinhão de purga
650 $aPlanta oleaginosa
653 $aBiofuel
653 $aEnergy crop
653 $aGenetic diversity
653 $aMicrosatellites
653 $aMicrossatélite
653 $aPhysic nut
700 1 $aSOUZA, I. G. B.
700 1 $aVELOSO, M. E. da C.
700 1 $aKOBAYASHI, A. K.
700 1 $aLAVIOLA, B. G.
700 1 $aDINIZ, F. M.
773 $tGenetics and Molecular Research, Ribeirão Preto$gv. 13, n. 3, p. 6099-6106, Aug. 2014.
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Embrapa Meio-Norte (CPAMN) |
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