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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
12/07/2013 |
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Data da última atualização: |
17/03/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RIBEIRO, I. C. N. dos S.; SANTOS, C. A. F.; LIMA NETO, F. P. |
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Afiliação: |
IERLA CARLA NUNES DOS SANTOS RIBEIRO; CARLOS ANTONIO FERNANDES SANTOS, CPATSA; FRANCISCO PINHEIRO LIMA NETO, CPATSA. |
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Título: |
Phenotypic divergency among Mangifera indica based on agromorphological descriptors. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
In: INTERNATIONAL MANGO SYMPOSIUM, 10., 2013, Bávaro, Punta Cana, Dominican Republic. Mango: opportunities and challenges in the 21 century. Punta Cana, Dominican Republic: CEDAF: CONIAF, 2013. |
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Páginas: |
p. 36. |
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Idioma: |
Inglês |
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Conteúdo: |
Studies about the genetic divergence among individuals in plant species have been of great value in breeding programs. In this work the genetic diversity of 103 mango accessions were evaluated, based on Brazilian adapted UPOV descriptors, in order to permit selection of adequate genitors for crossings and cultivar development. Only one person applied the descriptors to minimize the difference in personal judgment. For some metric descriptors a numeric value was obtained before converting them to a determined descriptor category. The absence of a given descriptor category was converted to "zero", while the presence was converted to "one". The Jacquard index of similarity was adopted to estimate the distance for each individual pair of studied accessions. The matrix of similarity was used for the construction of the dendogram, according to the Unweighted Pair Group Method with Arithmetic Mean. Averages were estimated for each descriptor for the formed groups. The cophenetic correlation was 0.48. The accessions evaluated presented similarity superior to 24% showing high variability of the accessions. At 0.30 similarity cutoff point four principal groups were formed, where the descriptors of the fruit were the most divergent. The accessions were grouped in the dendrogram independently of their geographic origino Descriptors related to mature fruits or point of harvest were the most divergent among the four groups, and they could be used to differentiate accessions of different groups. Of special inters is the fruit epidermis color that was different for the four groups. The accessions of groups one and three contrasted to pulp weight and skin color and could be used to develop new mango cultivars. MenosStudies about the genetic divergence among individuals in plant species have been of great value in breeding programs. In this work the genetic diversity of 103 mango accessions were evaluated, based on Brazilian adapted UPOV descriptors, in order to permit selection of adequate genitors for crossings and cultivar development. Only one person applied the descriptors to minimize the difference in personal judgment. For some metric descriptors a numeric value was obtained before converting them to a determined descriptor category. The absence of a given descriptor category was converted to "zero", while the presence was converted to "one". The Jacquard index of similarity was adopted to estimate the distance for each individual pair of studied accessions. The matrix of similarity was used for the construction of the dendogram, according to the Unweighted Pair Group Method with Arithmetic Mean. Averages were estimated for each descriptor for the formed groups. The cophenetic correlation was 0.48. The accessions evaluated presented similarity superior to 24% showing high variability of the accessions. At 0.30 similarity cutoff point four principal groups were formed, where the descriptors of the fruit were the most divergent. The accessions were grouped in the dendrogram independently of their geographic origino Descriptors related to mature fruits or point of harvest were the most divergent among the four groups, and they could be used to differentiate accessions of different g... Mostrar Tudo |
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Palavras-Chave: |
Descritor morfológico; Divergência genética; Similaridade. |
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Thesagro: |
Manga; Mangifera Indica; Melhoramento Genético Vegetal. |
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Thesaurus Nal: |
Mangoes. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/131368/1/ID-50456.pdf
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Marc: |
LEADER 02535nam a2200229 a 4500
001 1961911
005 2023-03-17
008 2013 bl uuuu u00u1 u #d
100 1 $aRIBEIRO, I. C. N. dos S.
245 $aPhenotypic divergency among Mangifera indica based on agromorphological descriptors.
260 $aIn: INTERNATIONAL MANGO SYMPOSIUM, 10., 2013, Bávaro, Punta Cana, Dominican Republic. Mango: opportunities and challenges in the 21 century. Punta Cana, Dominican Republic: CEDAF: CONIAF$c2013
300 $ap. 36.
520 $aStudies about the genetic divergence among individuals in plant species have been of great value in breeding programs. In this work the genetic diversity of 103 mango accessions were evaluated, based on Brazilian adapted UPOV descriptors, in order to permit selection of adequate genitors for crossings and cultivar development. Only one person applied the descriptors to minimize the difference in personal judgment. For some metric descriptors a numeric value was obtained before converting them to a determined descriptor category. The absence of a given descriptor category was converted to "zero", while the presence was converted to "one". The Jacquard index of similarity was adopted to estimate the distance for each individual pair of studied accessions. The matrix of similarity was used for the construction of the dendogram, according to the Unweighted Pair Group Method with Arithmetic Mean. Averages were estimated for each descriptor for the formed groups. The cophenetic correlation was 0.48. The accessions evaluated presented similarity superior to 24% showing high variability of the accessions. At 0.30 similarity cutoff point four principal groups were formed, where the descriptors of the fruit were the most divergent. The accessions were grouped in the dendrogram independently of their geographic origino Descriptors related to mature fruits or point of harvest were the most divergent among the four groups, and they could be used to differentiate accessions of different groups. Of special inters is the fruit epidermis color that was different for the four groups. The accessions of groups one and three contrasted to pulp weight and skin color and could be used to develop new mango cultivars.
650 $aMangoes
650 $aManga
650 $aMangifera Indica
650 $aMelhoramento Genético Vegetal
653 $aDescritor morfológico
653 $aDivergência genética
653 $aSimilaridade
700 1 $aSANTOS, C. A. F.
700 1 $aLIMA NETO, F. P.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
12/08/2021 |
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Data da última atualização: |
12/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
DALTRO, D. dos S.; SILVA, M. V. G. B.; GAMA, L. T. da; MACHADO, J. D.; KERN, E. L.; CAMPOS, G. S.; PANETTO, J. C. do C.; COBUCI, J. A. |
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Afiliação: |
DARLENE DOS SANTOS DALTRO, Universidade Federal do Rio Grande do Sul; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; LUIS TELO DA GAMA, Universidade de Lisboa; JULIANA DEMENTSHUCK MACHADO, Universidade Federal do Rio Grande do Sul; ELISANDRA LURDES KERN, Universidade Estadual do Oeste do Paraná; GABRIEL SOARES CAMPOS, Universidade Federal do Rio Grande do Sul; JOAO CLAUDIO DO CARMO PANETTO, CNPGL; JAIME ARAUJO COBUCI, Universidade Federal do Rio Grande do Sul. |
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Título: |
Estimates of genetic and crossbreeding parameters for 305-day milk yield of Girolando cows. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Italian Journal of Animal Science, v. 19, n. 1, p. 86-94, 2020. |
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DOI: |
https://doi.org/10.1080/1828051X.2019.1702110 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to evaluate the effects of breed and heterosis on the estimates of genetic parameters of 305-day milk yield (305MY), by fitting milk yield data to the Wood, Mixed Log, Morgan, and Wilmink non-linear models. A total of 258,891 test-day milk yield records of 37,965 Holstein (H), Gyr (G), and Girolando (1/2 H, 1/4 H, 3/4 H, 3/8 H, 5/8H and 7/8H genetic groups) cows from 1840 herds were collected in the state of Minas Gerais, Brazil, in the period of 1998 to 2014. The pedigree file included 36,640 animals, 3677 bulls and 24,472 cows. The genetic parameters were obtained by one-character analysis using the AIREMLF90 software. The heritability estimates of 305MY, and of 305MY fitted to the different nonlinear models ranged from 0.14 to 0.20. Most genetic groups had heterosis effect, with the greatest effects for 305MY on 1/2H (1/2 Holstein 1/2 Gyr) cows, presenting a milk yield of 1112.73 kg higher than the average of their parents. The results indicate that most genetic groups of Girolando present heterosis effect for 305MY estimated through nonlinear models, and the possibility of obtaining moderate genetic gains when these animals are subjected to selection procedures. |
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Palavras-Chave: |
Heterose. |
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Thesagro: |
Bovino; Gado Leiteiro; Modelo Matemático; Vaca Leiteira. |
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Thesaurus NAL: |
Dairy cows; Heritability; Heterosis; Mathematical models. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225102/1/Estimates-genetic-crossbreeding.pdf
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Marc: |
LEADER 02170naa a2200325 a 4500
001 2133496
005 2021-08-12
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/1828051X.2019.1702110$2DOI
100 1 $aDALTRO, D. dos S.
245 $aEstimates of genetic and crossbreeding parameters for 305-day milk yield of Girolando cows.$h[electronic resource]
260 $c2020
520 $aThe objective of this work was to evaluate the effects of breed and heterosis on the estimates of genetic parameters of 305-day milk yield (305MY), by fitting milk yield data to the Wood, Mixed Log, Morgan, and Wilmink non-linear models. A total of 258,891 test-day milk yield records of 37,965 Holstein (H), Gyr (G), and Girolando (1/2 H, 1/4 H, 3/4 H, 3/8 H, 5/8H and 7/8H genetic groups) cows from 1840 herds were collected in the state of Minas Gerais, Brazil, in the period of 1998 to 2014. The pedigree file included 36,640 animals, 3677 bulls and 24,472 cows. The genetic parameters were obtained by one-character analysis using the AIREMLF90 software. The heritability estimates of 305MY, and of 305MY fitted to the different nonlinear models ranged from 0.14 to 0.20. Most genetic groups had heterosis effect, with the greatest effects for 305MY on 1/2H (1/2 Holstein 1/2 Gyr) cows, presenting a milk yield of 1112.73 kg higher than the average of their parents. The results indicate that most genetic groups of Girolando present heterosis effect for 305MY estimated through nonlinear models, and the possibility of obtaining moderate genetic gains when these animals are subjected to selection procedures.
650 $aDairy cows
650 $aHeritability
650 $aHeterosis
650 $aMathematical models
650 $aBovino
650 $aGado Leiteiro
650 $aModelo Matemático
650 $aVaca Leiteira
653 $aHeterose
700 1 $aSILVA, M. V. G. B.
700 1 $aGAMA, L. T. da
700 1 $aMACHADO, J. D.
700 1 $aKERN, E. L.
700 1 $aCAMPOS, G. S.
700 1 $aPANETTO, J. C. do C.
700 1 $aCOBUCI, J. A.
773 $tItalian Journal of Animal Science$gv. 19, n. 1, p. 86-94, 2020.
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Embrapa Gado de Leite (CNPGL) |
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