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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
24/09/2010 |
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Data da última atualização: |
28/09/2010 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
JUNGMANN, L.; VIGNA, B. B. Z.; BOLDRINI, A. C. B.; SOUSA, A. C. B.; VALLE, C. B. do; RESENDE, R. M. S.; PAGLIARINI, M. S.; ZUCCHI, M. I.; SOUZA, A. P. de. |
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Afiliação: |
LETICIA JUNGMANN CANCADO, CNPGC; B. B. Z. VIGNA, UNICAMP; A. C. B. BOLDRINI, UEM; A. C. B. SOUSA, UNICAMP; CACILDA BORGES DO VALLE, CNPGC; ROSANGELA MARIA SIMEAO RESENDE, CNPGC; M. S. PAGLIARINI, UEM; M. I. ZUCCHI, APTS PÓLO CENTRO SUL; A. P. DE SOUZA, UNICAMP. |
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Título: |
Genetic diversity and population structure analysis of the tropical pasture grass Brachiaria humidicola based on microsatellites, cytogenetics, morphological traits, and geographical origin. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Genome, v.53, n.9, p. 698-709, Sept. 2010. |
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Idioma: |
Inglês |
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Conteúdo: |
Brachiaria humidicola (Rendle) Schweick. is a warm-season grass commonly used as forage in the tropics. Accessions of this species were collected in eastern Africa and massively introduced into South America in the 1980s. Several of these accessions form a germplasm collection at the Brazilian Agricultural Research Corporation. However, apomixis, ploidy, and limited knowledge of the genetic basis of this germplasm collection have constrained breeding activities. The objectives of this work were to identify genetic variability in the Brazilian B. humidicola germplasm collection using microsatellite markers and to compare the results with information on the following: (1) collection sites of the accessions; (2) reproductive mode and ploidy levels; and (3) genetic diversity revealed by morphological traits. The evaluated germplasm population is highly structured into four major groups. The sole sexual accession did not group with any of the clusters. Genetic dissimilarities did not correlate with either geographic distances or genetic distances inferred from morphological descriptors. Additionally, the genetic structure identified in this collection did not correspond to differences in ploidy level. Alleles exclusive to either sexual or apomictic accessions were identified, suggesting that further evaluation of the association of these loci with apospory should be carried out. |
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Palavras-Chave: |
Microssatélite. |
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Thesagro: |
Brachiaria Humidicola; Marcador Molecular; Melhoramento Genético Vegetal; Pastagem. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02290naa a2200277 a 4500
001 1862882
005 2010-09-28
008 2010 bl --- 0-- u #d
100 1 $aJUNGMANN, L.
245 $aGenetic diversity and population structure analysis of the tropical pasture grass Brachiaria humidicola based on microsatellites, cytogenetics, morphological traits, and geographical origin.
260 $c2010
520 $aBrachiaria humidicola (Rendle) Schweick. is a warm-season grass commonly used as forage in the tropics. Accessions of this species were collected in eastern Africa and massively introduced into South America in the 1980s. Several of these accessions form a germplasm collection at the Brazilian Agricultural Research Corporation. However, apomixis, ploidy, and limited knowledge of the genetic basis of this germplasm collection have constrained breeding activities. The objectives of this work were to identify genetic variability in the Brazilian B. humidicola germplasm collection using microsatellite markers and to compare the results with information on the following: (1) collection sites of the accessions; (2) reproductive mode and ploidy levels; and (3) genetic diversity revealed by morphological traits. The evaluated germplasm population is highly structured into four major groups. The sole sexual accession did not group with any of the clusters. Genetic dissimilarities did not correlate with either geographic distances or genetic distances inferred from morphological descriptors. Additionally, the genetic structure identified in this collection did not correspond to differences in ploidy level. Alleles exclusive to either sexual or apomictic accessions were identified, suggesting that further evaluation of the association of these loci with apospory should be carried out.
650 $aBrachiaria Humidicola
650 $aMarcador Molecular
650 $aMelhoramento Genético Vegetal
650 $aPastagem
653 $aMicrossatélite
700 1 $aVIGNA, B. B. Z.
700 1 $aBOLDRINI, A. C. B.
700 1 $aSOUSA, A. C. B.
700 1 $aVALLE, C. B. do
700 1 $aRESENDE, R. M. S.
700 1 $aPAGLIARINI, M. S.
700 1 $aZUCCHI, M. I.
700 1 $aSOUZA, A. P. de
773 $tGenome$gv.53, n.9, p. 698-709, Sept. 2010.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
14/01/2019 |
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Data da última atualização: |
14/01/2019 |
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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: |
PINTO JÚNIOR, R. A.; PATTO, M. A.; MARTINS, E. S.; ABREU, A. de F. B. |
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Afiliação: |
RICARDO ANDRADE PINTO JUNIOR, UFLA; MAGNO ANTONIO PATTO, UFLA; EMANOEL SANCHES MARTINS, UFLA; ANGELA DE FATIMA BARBOSA ABREU, CNPAF. |
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Título: |
Inheritance of harvest index in common bean. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, v. 18, n. 3, p. 252-258, jul./set. 2018. |
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ISSN: |
1518-7853 |
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DOI: |
10.1590/1984-70332018v18n3a38 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to verify if the harvest index (HI) of common bean is higher in modern lines, to verify if its estimate varies with the cycle of the plant and environmental conditions, and to obtain information concerning its genetic control (through diallel crossing). For this purpose, six lines were crossed in a diallel. Evaluations were carried out in three crop seasons/generations - F2, F3, and F4. A receptacle was used to collect leaves, pods, and other plant parts that fell before harvest. Diallel analysis was performed using Griffing?s method II. It found that the HI was higher in modern lines and was not affected by the cycle; the estimated HI heterosis was negative, indicating the occurrence of dominance in order to reduce trait expression. |
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Thesagro: |
Feijão; Melhoramento Genético Vegetal; Phaseolus Vulgaris. |
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Thesaurus NAL: |
Beans; Physiological response; Plant breeding; Quantitative genetics. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190377/1/CNPAF-2018-cbab5.pdf
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Marc: |
LEADER 01556naa a2200265 a 4500
001 2103848
005 2019-01-14
008 2018 bl uuuu u00u1 u #d
022 $a1518-7853
024 7 $a10.1590/1984-70332018v18n3a38$2DOI
100 1 $aPINTO JÚNIOR, R. A.
245 $aInheritance of harvest index in common bean.$h[electronic resource]
260 $c2018
520 $aThe aim of this study was to verify if the harvest index (HI) of common bean is higher in modern lines, to verify if its estimate varies with the cycle of the plant and environmental conditions, and to obtain information concerning its genetic control (through diallel crossing). For this purpose, six lines were crossed in a diallel. Evaluations were carried out in three crop seasons/generations - F2, F3, and F4. A receptacle was used to collect leaves, pods, and other plant parts that fell before harvest. Diallel analysis was performed using Griffing?s method II. It found that the HI was higher in modern lines and was not affected by the cycle; the estimated HI heterosis was negative, indicating the occurrence of dominance in order to reduce trait expression.
650 $aBeans
650 $aPhysiological response
650 $aPlant breeding
650 $aQuantitative genetics
650 $aFeijão
650 $aMelhoramento Genético Vegetal
650 $aPhaseolus Vulgaris
700 1 $aPATTO, M. A.
700 1 $aMARTINS, E. S.
700 1 $aABREU, A. de F. B.
773 $tCrop Breeding and Applied Biotechnology$gv. 18, n. 3, p. 252-258, jul./set. 2018.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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