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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
09/11/1998 |
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Data da última atualização: |
09/11/1998 |
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Autoria: |
THIYAGARAJAN, K.; NATARAJAN, C. |
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Título: |
Genetic divergence in cowpea. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Tropical Grain Legume Bulletin, n.36, p.2-3, 1989. |
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Idioma: |
Inglês |
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Conteúdo: |
Thirty geographically diverse cowpea (Vigna unguiculata (L.) Walp.) genotypes were grouped into four clusters, on the basis of multivariate analysis, for seven yield component characters. Characters like pods per plant, seeds per pod, and seed yield per plant were found to contribute much to the genetic divergence in cowpea. The clustoring pattern revealed the absence of parallelism between geographic and genetic diversity. Inter-cluster distances and mean cluster character values indicated that hybridization of cluster I genotypes that have a higher mean yield with a cluster IV genotype would exhibit high heterosis and likely result in segregants with higher yield. |
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Palavras-Chave: |
Caupi; Cowpea; Divergencia genetica; Genetic divergence; Metodo de agrupamento. |
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Thesagro: |
Vigna Unguiculata. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01199naa a2200205 a 4500
001 1054614
005 1998-11-09
008 1989 bl --- 0-- u #d
100 1 $aTHIYAGARAJAN, K.
245 $aGenetic divergence in cowpea.
260 $c1989
520 $aThirty geographically diverse cowpea (Vigna unguiculata (L.) Walp.) genotypes were grouped into four clusters, on the basis of multivariate analysis, for seven yield component characters. Characters like pods per plant, seeds per pod, and seed yield per plant were found to contribute much to the genetic divergence in cowpea. The clustoring pattern revealed the absence of parallelism between geographic and genetic diversity. Inter-cluster distances and mean cluster character values indicated that hybridization of cluster I genotypes that have a higher mean yield with a cluster IV genotype would exhibit high heterosis and likely result in segregants with higher yield.
650 $aVigna Unguiculata
653 $aCaupi
653 $aCowpea
653 $aDivergencia genetica
653 $aGenetic divergence
653 $aMetodo de agrupamento
700 1 $aNATARAJAN, C.
773 $tTropical Grain Legume Bulletin$gn.36, p.2-3, 1989.
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Embrapa Meio-Norte (CPAMN) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pesca e Aquicultura. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
19/01/2024 |
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Data da última atualização: |
20/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SOUZA, V. S.; SANTOS, D. de C.; FERREIRA, J. G.; SOUZA, S. O. de; GONÇALO, T. P.; SOUSA, J. V. A. de; CRUVINEL, A. G.; VILELA, L.; PAIM, T. do P.; ALMEIDA, R. E. M. de; CANISARES, L. P.; CHERUBIN, M. R. |
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Afiliação: |
VICTORIA SANTOS SOUZA, IFGOIANO, Rio Verde-GO; DARLIANE DE CASTRO SANTOS, IFGOIANO, Rio Verde-GO; JAQUELINE GOMES FERREIRA, IFGOIANO, Rio Verde-GO; STEFANY OLIVEIRA DE SOUZA, IFGOIANO, Rio Verde-GO; TULIO PORTO GONÇALO; JOAO VITOR ALVES DE SOUSA; ALINE GUIMARAES CRUVINEL; LOURIVAL VILELA, CPAC; TIAGO DO PRADO PAIM, IFGOIANO, Rio Verde-GO; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; LUCAS PECCI CANISARES, ESALQ; MAURICIO ROBERTO CHERUBIN, ESALQ. |
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Título: |
Cover crop diversity for sustainable agriculture: insights from the Cerrado biome. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Soil Use and Management, v. 40, e13014, 2024. |
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ISSN: |
1475-2743 |
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DOI: |
https://doi.org/10.1111/sum.13014 |
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Idioma: |
Inglês |
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Conteúdo: |
Brazil is one of the largest soybean producer of the world and the Cerrado biome has played a pivotal role in this expansion. Because of the economic and agronomic challenges associated with the maize production as a second summer crop in this region, cover crops are gaining popularity as a strategy to diversify the agricultural system while enhancing soil health. This study assessed the benefits of single species of cover crops and a mix of cover crop species in between harvest seasons to the soybean grain yield and nematode suppression. The study was carried out for 3 years in two locations within the Cerrado biome. We evaluated six cover crop treatments after soybean cultivation: (1) Mix of cover crops (Pennisetum glaucum, Crotalaria spectabilis and Urochloa ruziziensis), (2) P. glaucum (Pearl millet), (3) C. spectabilis, (4) U. ruziziensis (Congo grass) (5) Urochloa brizantha cv. Marandu (Marandu palisadegrass) and (6) U. brizantha BRS Paiaguás (Paiaguás palisadegrass). Pennisetum glaucum and U. brizantha cv. Marandu produced highest amounts of biomass on a 3-year average. In one site, P. glaucum produced more biomass than other cover crops by 210%. Tropical grasses (U. ruziziensis, Marandu and Paiaguás), along with the cover crop mixture, exhibited intermediate biomass levels in the site with higher P. glaucum biomass production and did not differ from P. glaucum in the other site. Cover crops varied nutrient uptake depending on the species. Decomposition rates varied among cover crops as expected, with C. spectabilis decomposing rapidly and releasing substantial amounts nutrients, particularly nitrogen. In contrast, the cover crop mixture had a slower decomposition. The choice of cover crop significantly influenced soybean population and yield, with some variability across years and locations. The cover crop mixture consistently supported higher soybean populations and yields, highlighting its potential for enhancing soybean production, nutrient cycling and nematode suppression. It effectively reduced nematode abundance in soybean roots, highlighting its role in nematode management. Our findings emphasize the robustness and versatility of cover crop mixtures in mitigating weather variability across years and sites. They consistently performed well in terms of biomass production, nutrient uptake, soybean yields and nematode control. This study highlights the vital role of cover crops in the Cerrado ecosystem, enhancing soil health, crop productivity and environmental sustainability. The choice of cover crop species and mixtures offers a valuable tool for farmers seeking resilient and sustainable agricultural practices amid changing environmental conditions. MenosBrazil is one of the largest soybean producer of the world and the Cerrado biome has played a pivotal role in this expansion. Because of the economic and agronomic challenges associated with the maize production as a second summer crop in this region, cover crops are gaining popularity as a strategy to diversify the agricultural system while enhancing soil health. This study assessed the benefits of single species of cover crops and a mix of cover crop species in between harvest seasons to the soybean grain yield and nematode suppression. The study was carried out for 3 years in two locations within the Cerrado biome. We evaluated six cover crop treatments after soybean cultivation: (1) Mix of cover crops (Pennisetum glaucum, Crotalaria spectabilis and Urochloa ruziziensis), (2) P. glaucum (Pearl millet), (3) C. spectabilis, (4) U. ruziziensis (Congo grass) (5) Urochloa brizantha cv. Marandu (Marandu palisadegrass) and (6) U. brizantha BRS Paiaguás (Paiaguás palisadegrass). Pennisetum glaucum and U. brizantha cv. Marandu produced highest amounts of biomass on a 3-year average. In one site, P. glaucum produced more biomass than other cover crops by 210%. Tropical grasses (U. ruziziensis, Marandu and Paiaguás), along with the cover crop mixture, exhibited intermediate biomass levels in the site with higher P. glaucum biomass production and did not differ from P. glaucum in the other site. Cover crops varied nutrient uptake depending on the species. Decomposition rates varied a... Mostrar Tudo |
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Palavras-Chave: |
Soil health. |
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Thesagro: |
Biomassa; Cerrado; Planta de Cobertura; Resíduo Agrícola; Rotação de Cultura; Soja; Solo. |
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Thesaurus NAL: |
Cover crops; Crop residues; Crop rotation; Soybeans. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 03865naa a2200421 a 4500
001 2161055
005 2024-01-20
008 2024 bl uuuu u00u1 u #d
022 $a1475-2743
024 7 $ahttps://doi.org/10.1111/sum.13014$2DOI
100 1 $aSOUZA, V. S.
245 $aCover crop diversity for sustainable agriculture$binsights from the Cerrado biome.$h[electronic resource]
260 $c2024
520 $aBrazil is one of the largest soybean producer of the world and the Cerrado biome has played a pivotal role in this expansion. Because of the economic and agronomic challenges associated with the maize production as a second summer crop in this region, cover crops are gaining popularity as a strategy to diversify the agricultural system while enhancing soil health. This study assessed the benefits of single species of cover crops and a mix of cover crop species in between harvest seasons to the soybean grain yield and nematode suppression. The study was carried out for 3 years in two locations within the Cerrado biome. We evaluated six cover crop treatments after soybean cultivation: (1) Mix of cover crops (Pennisetum glaucum, Crotalaria spectabilis and Urochloa ruziziensis), (2) P. glaucum (Pearl millet), (3) C. spectabilis, (4) U. ruziziensis (Congo grass) (5) Urochloa brizantha cv. Marandu (Marandu palisadegrass) and (6) U. brizantha BRS Paiaguás (Paiaguás palisadegrass). Pennisetum glaucum and U. brizantha cv. Marandu produced highest amounts of biomass on a 3-year average. In one site, P. glaucum produced more biomass than other cover crops by 210%. Tropical grasses (U. ruziziensis, Marandu and Paiaguás), along with the cover crop mixture, exhibited intermediate biomass levels in the site with higher P. glaucum biomass production and did not differ from P. glaucum in the other site. Cover crops varied nutrient uptake depending on the species. Decomposition rates varied among cover crops as expected, with C. spectabilis decomposing rapidly and releasing substantial amounts nutrients, particularly nitrogen. In contrast, the cover crop mixture had a slower decomposition. The choice of cover crop significantly influenced soybean population and yield, with some variability across years and locations. The cover crop mixture consistently supported higher soybean populations and yields, highlighting its potential for enhancing soybean production, nutrient cycling and nematode suppression. It effectively reduced nematode abundance in soybean roots, highlighting its role in nematode management. Our findings emphasize the robustness and versatility of cover crop mixtures in mitigating weather variability across years and sites. They consistently performed well in terms of biomass production, nutrient uptake, soybean yields and nematode control. This study highlights the vital role of cover crops in the Cerrado ecosystem, enhancing soil health, crop productivity and environmental sustainability. The choice of cover crop species and mixtures offers a valuable tool for farmers seeking resilient and sustainable agricultural practices amid changing environmental conditions.
650 $aCover crops
650 $aCrop residues
650 $aCrop rotation
650 $aSoybeans
650 $aBiomassa
650 $aCerrado
650 $aPlanta de Cobertura
650 $aResíduo Agrícola
650 $aRotação de Cultura
650 $aSoja
650 $aSolo
653 $aSoil health
700 1 $aSANTOS, D. de C.
700 1 $aFERREIRA, J. G.
700 1 $aSOUZA, S. O. de
700 1 $aGONÇALO, T. P.
700 1 $aSOUSA, J. V. A. de
700 1 $aCRUVINEL, A. G.
700 1 $aVILELA, L.
700 1 $aPAIM, T. do P.
700 1 $aALMEIDA, R. E. M. de
700 1 $aCANISARES, L. P.
700 1 $aCHERUBIN, M. R.
773 $tSoil Use and Management$gv. 40, e13014, 2024.
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