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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
20/09/2007 |
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Data da última atualização: |
20/09/2007 |
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Autoria: |
OLIVIER, J. J.; CLOETE, S. W. P. |
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Título: |
Genetic analysis of the South African Dorper sheep. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 8., 2006, Belo Horizonte, MG. Proceedings... Belo Horizonte: Instituto Prociência, 2006. 4 f. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
Subjective assessment is emphasized in the breed improvement of South African Dorper sheep. Data from the National Small Stock Improvement Scheme yielded estimates of 0.19±0.02 for h², 0.10±0.02 for m² and 0.07±0.01 for c² in the case of weaning weight (WW). Estimates for post weaning weight (PWW) were 0.23±0.03 for h² and 0.14±0.02 for m². Estimates of h² for reproduction traits were low, ranging from 0.04 to 0.07. For the type traits, estimates of h2 were low for conformation (0.11) and type (0.10), while size was moderately heritable at 0.25±0.02. Conformation and type were favourably correlated to WW and PWW, the correlation rangingfrom low to moderate. These traits were unfavourably correlated to TWW. Realised genetic trends (per annum) were 0.009 kg for direct WW, 0.009 kg for maternal WW, 0.11 kg for PWW and -0.03 kg lamb per ewe lambed for TWW. It seems reasonable that slow genetic gains in production traits (and a lack of progress in reproduction) could be attributed to type traits being overly accentuated. |
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Palavras-Chave: |
Análise genética; Raça Dorper. |
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Thesagro: |
Melhoramento Genético Animal; Ovino. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01653naa a2200181 a 4500
001 1521863
005 2007-09-20
008 2006 bl uuuu u00u1 u #d
100 1 $aOLIVIER, J. J.
245 $aGenetic analysis of the South African Dorper sheep.
260 $c2006
520 $aSubjective assessment is emphasized in the breed improvement of South African Dorper sheep. Data from the National Small Stock Improvement Scheme yielded estimates of 0.19±0.02 for h², 0.10±0.02 for m² and 0.07±0.01 for c² in the case of weaning weight (WW). Estimates for post weaning weight (PWW) were 0.23±0.03 for h² and 0.14±0.02 for m². Estimates of h² for reproduction traits were low, ranging from 0.04 to 0.07. For the type traits, estimates of h2 were low for conformation (0.11) and type (0.10), while size was moderately heritable at 0.25±0.02. Conformation and type were favourably correlated to WW and PWW, the correlation rangingfrom low to moderate. These traits were unfavourably correlated to TWW. Realised genetic trends (per annum) were 0.009 kg for direct WW, 0.009 kg for maternal WW, 0.11 kg for PWW and -0.03 kg lamb per ewe lambed for TWW. It seems reasonable that slow genetic gains in production traits (and a lack of progress in reproduction) could be attributed to type traits being overly accentuated.
650 $aMelhoramento Genético Animal
650 $aOvino
653 $aAnálise genética
653 $aRaça Dorper
700 1 $aCLOETE, S. W. P.
773 $tIn: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 8., 2006, Belo Horizonte, MG. Proceedings... Belo Horizonte: Instituto Prociência, 2006. 4 f. 1 CD-ROM.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Café. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
25/01/2022 |
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Data da última atualização: |
11/04/2022 |
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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: |
CINTRA, L. A.; SOUZA, T. B. de; PARTEKA, L. M.; BARRETO, L. M.; PEREIRA, L. F. P.; GAETA, M. L.; GUYOT, R.; VANZELA, A. L. L. |
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Afiliação: |
LEONARDO ADABO CINTRA, UNIVERSIDADE ESTADUAL DE LONDRINA; THAÍSSA BOLDIERI DE SOUZA, UNIVERSIDADE ESTADUAL DE LONDRINA; LETÍCIA MARIA PARTEKA, UNIVERSIDADE ESTADUAL DE LONDRINA; LUCAS MESQUITA BARRETO, UNIVERSIDADE ESTADUAL DE LONDRINA; LUIZ FILIPE PROTASIO PEREIRA, CNPCa; MARCOS LETAIF GAETA, UNIVERSIDADE ESTADUAL DE LONDRINA; ROMAIN GUYOT, CIRAD; ANDRÉ LUÍS LAFORGA VANZELA, UNIVERSIDADE ESTADUAL DE LONDRINA. |
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Título: |
An 82 bp tandem repeat family typical of 3' non-coding end of Gypsy/TAT LTR retrotransposons is conserved in Coffea spp. pericentromeres. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Genome, v.65, n. 3, p. 137-181, 2021. |
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DOI: |
https://doi.org/10.1139/gen-2021-0045 |
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Idioma: |
Inglês |
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Notas: |
Date of Electronic Publication: 2021 Nov 02. |
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Conteúdo: |
Coffea spp. chromosomes are very small and accumulate a variety of repetitive DNA families around the centromeres. However, the proximal regions of Coffea chromosomes remain poorly understood, especially regarding the nature and organisation of the sequences. Taking advantage of the genome sequences of C. arabica (2n = 44), C. canephora, and C. eugenioides (C. arabica progenitors with 2n = 22) and good coverage genome sequencing of dozens of other wild Coffea spp., repetitive DNA sequences were identified, and the genomes were compared to decipher particularities of pericentromeric structures. The searches revealed a short tandem repeat (82 bp length) typical of Gypsy/TAT LTR retrotransposons, named Coffea_sat11. This repeat organises clusters with fragments of other transposable elements, comprising regions of non-coding RNA production. Cytogenomic analyses showed that Coffea_sat11 extends from the pericentromeres towards the middle of the chromosomal arms. This arrangement was observed in the allotetraploid C. arabica chromosomes, as well as in its progenitors. This study improves our understanding of the role of the Gypsy/TAT LTR retrotransposon lineage in the organisation of Coffea pericentromeres, as well as the conservation of Coffea_sat11 within the genus. The relationships between fragments of other transposable elements and the functional aspects of these sequences on the pericentromere chromatin were also evaluated. Highlights: A scattered short tandem repeat, typical of Gypsy/TAT LTR retrotransposons, associated with several fragments of other transposable elements, accumulates in the pericentromeres of Coffea chromosomes. This arrangement is preserved in all clades of the genus and appears to have a strong regulatory role in the organisation of chromatin around centromeres. MenosCoffea spp. chromosomes are very small and accumulate a variety of repetitive DNA families around the centromeres. However, the proximal regions of Coffea chromosomes remain poorly understood, especially regarding the nature and organisation of the sequences. Taking advantage of the genome sequences of C. arabica (2n = 44), C. canephora, and C. eugenioides (C. arabica progenitors with 2n = 22) and good coverage genome sequencing of dozens of other wild Coffea spp., repetitive DNA sequences were identified, and the genomes were compared to decipher particularities of pericentromeric structures. The searches revealed a short tandem repeat (82 bp length) typical of Gypsy/TAT LTR retrotransposons, named Coffea_sat11. This repeat organises clusters with fragments of other transposable elements, comprising regions of non-coding RNA production. Cytogenomic analyses showed that Coffea_sat11 extends from the pericentromeres towards the middle of the chromosomal arms. This arrangement was observed in the allotetraploid C. arabica chromosomes, as well as in its progenitors. This study improves our understanding of the role of the Gypsy/TAT LTR retrotransposon lineage in the organisation of Coffea pericentromeres, as well as the conservation of Coffea_sat11 within the genus. The relationships between fragments of other transposable elements and the functional aspects of these sequences on the pericentromere chromatin were also evaluated. Highlights: A scattered short tandem repeat, typi... Mostrar Tudo |
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Thesaurus NAL: |
Chromosomes; Coffea; DNA probes; Genome. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02675naa a2200277 a 4500
001 2139296
005 2022-04-11
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1139/gen-2021-0045$2DOI
100 1 $aCINTRA, L. A.
245 $aAn 82 bp tandem repeat family typical of 3' non-coding end of Gypsy/TAT LTR retrotransposons is conserved in Coffea spp. pericentromeres.$h[electronic resource]
260 $c2021
500 $aDate of Electronic Publication: 2021 Nov 02.
520 $aCoffea spp. chromosomes are very small and accumulate a variety of repetitive DNA families around the centromeres. However, the proximal regions of Coffea chromosomes remain poorly understood, especially regarding the nature and organisation of the sequences. Taking advantage of the genome sequences of C. arabica (2n = 44), C. canephora, and C. eugenioides (C. arabica progenitors with 2n = 22) and good coverage genome sequencing of dozens of other wild Coffea spp., repetitive DNA sequences were identified, and the genomes were compared to decipher particularities of pericentromeric structures. The searches revealed a short tandem repeat (82 bp length) typical of Gypsy/TAT LTR retrotransposons, named Coffea_sat11. This repeat organises clusters with fragments of other transposable elements, comprising regions of non-coding RNA production. Cytogenomic analyses showed that Coffea_sat11 extends from the pericentromeres towards the middle of the chromosomal arms. This arrangement was observed in the allotetraploid C. arabica chromosomes, as well as in its progenitors. This study improves our understanding of the role of the Gypsy/TAT LTR retrotransposon lineage in the organisation of Coffea pericentromeres, as well as the conservation of Coffea_sat11 within the genus. The relationships between fragments of other transposable elements and the functional aspects of these sequences on the pericentromere chromatin were also evaluated. Highlights: A scattered short tandem repeat, typical of Gypsy/TAT LTR retrotransposons, associated with several fragments of other transposable elements, accumulates in the pericentromeres of Coffea chromosomes. This arrangement is preserved in all clades of the genus and appears to have a strong regulatory role in the organisation of chromatin around centromeres.
650 $aChromosomes
650 $aCoffea
650 $aDNA probes
650 $aGenome
700 1 $aSOUZA, T. B. de
700 1 $aPARTEKA, L. M.
700 1 $aBARRETO, L. M.
700 1 $aPEREIRA, L. F. P.
700 1 $aGAETA, M. L.
700 1 $aGUYOT, R.
700 1 $aVANZELA, A. L. L.
773 $tGenome$gv.65, n. 3, p. 137-181, 2021.
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