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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
26/09/2016 |
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Data da última atualização: |
02/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RESENDE, R. M. S.; ASSIS, G. M. L. de; MONTAGNER, D. B.; FERREIRA, R. C. U. |
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Afiliação: |
ROSANGELA MARIA SIMEAO RESENDE, CNPGC; GISELLE MARIANO LESSA DE ASSIS, CPAF-Acre; DENISE BAPTAGLIN MONTAGNER, CNPGC; Instituto de Biologia, Universidade de Campinas. |
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Título: |
Forage peanut (Arachis spp.) genetic evaluation and selection. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Grass and Forage Science, New Jersey, p. 1-11, July 2016. |
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DOI: |
10.1111/gfs.12242. |
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Idioma: |
Inglês |
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Notas: |
Online record. |
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Conteúdo: |
Forage peanut improvement for use in grass-legume mixtures is expected to have a great impact on the sustainability of Brazilian livestock production. Eighteen cloned Arachis spp. ecotypes were evaluated under clipping in a Brazilian Cerrado region and results analysed using a mixed model methodology. The objective was to estimate genetic and phenotypic parameters and to select the best ecotypes based on selection index applied on their predicted genotypic value. The traits of total dry-matter (DM) and leaf DM yield presented moderate (0_30 < h2g < 0_50) to high (>0_50) broad-sense heritability, in contrast to the low genetic variability in nutritional quality-associated traits. Ecotypes of Arachis spp. contained average crude protein concentrations of 224 g kg _1 DM in leaves and 138 g kg _1 DM in stems, supporting the potential role of these species to overcome the low protein content in Cerrado pastures. The correlations between yield traits and traits associated with low nutritional value in leaves were consistently significant and positive. Genetic correlations among all the yield traits evaluated during the rainy or dry seasons were significant and positive. The ecotypes were ranked based on selection index. The next step is to validate long-term selection of grass?Arachis in combination with pastures under competition and adjusted grazing in the Cerrado region. |
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Palavras-Chave: |
Acumulación de materia seca; Amendoim forrageiro; Arachis spp; Fitomejoramiento; Forage peanut; Heredabilidad; Leguminosas forrajeras; Pastizales; Produção sazonal; Producción estacional; Rendimiento de los cultivos; Repetibilidad; Repetibilidade; Seasonal production; Valor nutricional; Variación fenotípica; Variación genética. |
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Thesagro: |
Cerrado; Hereditariedade; Leguminosa forrageira; Matéria seca; Melhoramento genético vegetal; Parâmetro genético; Pastagem; Rendimento; Seleção fenótipa; Valor Nutritivo. |
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Thesaurus Nal: |
Crop yield; Dry matter accumulation; Forage legumes; Genetic variation; Heritability; Nutritive value; Pastures; Phenotypic variation; Plant breeding; Repeatability. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/147785/1/26126.pdf
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Marc: |
LEADER 03177naa a2200625 a 4500
001 2053464
005 2021-07-02
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1111/gfs.12242.$2DOI
100 1 $aRESENDE, R. M. S.
245 $aForage peanut (Arachis spp.) genetic evaluation and selection.$h[electronic resource]
260 $c2016
500 $aOnline record.
520 $aForage peanut improvement for use in grass-legume mixtures is expected to have a great impact on the sustainability of Brazilian livestock production. Eighteen cloned Arachis spp. ecotypes were evaluated under clipping in a Brazilian Cerrado region and results analysed using a mixed model methodology. The objective was to estimate genetic and phenotypic parameters and to select the best ecotypes based on selection index applied on their predicted genotypic value. The traits of total dry-matter (DM) and leaf DM yield presented moderate (0_30 < h2g < 0_50) to high (>0_50) broad-sense heritability, in contrast to the low genetic variability in nutritional quality-associated traits. Ecotypes of Arachis spp. contained average crude protein concentrations of 224 g kg _1 DM in leaves and 138 g kg _1 DM in stems, supporting the potential role of these species to overcome the low protein content in Cerrado pastures. The correlations between yield traits and traits associated with low nutritional value in leaves were consistently significant and positive. Genetic correlations among all the yield traits evaluated during the rainy or dry seasons were significant and positive. The ecotypes were ranked based on selection index. The next step is to validate long-term selection of grass?Arachis in combination with pastures under competition and adjusted grazing in the Cerrado region.
650 $aCrop yield
650 $aDry matter accumulation
650 $aForage legumes
650 $aGenetic variation
650 $aHeritability
650 $aNutritive value
650 $aPastures
650 $aPhenotypic variation
650 $aPlant breeding
650 $aRepeatability
650 $aCerrado
650 $aHereditariedade
650 $aLeguminosa forrageira
650 $aMatéria seca
650 $aMelhoramento genético vegetal
650 $aParâmetro genético
650 $aPastagem
650 $aRendimento
650 $aSeleção fenótipa
650 $aValor Nutritivo
653 $aAcumulación de materia seca
653 $aAmendoim forrageiro
653 $aArachis spp
653 $aFitomejoramiento
653 $aForage peanut
653 $aHeredabilidad
653 $aLeguminosas forrajeras
653 $aPastizales
653 $aProdução sazonal
653 $aProducción estacional
653 $aRendimiento de los cultivos
653 $aRepetibilidad
653 $aRepetibilidade
653 $aSeasonal production
653 $aValor nutricional
653 $aVariación fenotípica
653 $aVariación genética
700 1 $aASSIS, G. M. L. de
700 1 $aMONTAGNER, D. B.
700 1 $aFERREIRA, R. C. U.
773 $tGrass and Forage Science, New Jersey, p. 1-11, July 2016.
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Registro original: |
Embrapa Acre (CPAF-AC) |
