| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Biblioteca Rui Tendinha. |
|
Data corrente: |
13/03/2018 |
|
Data da última atualização: |
13/03/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
MORAES, M. S.; TEIXEIRA, A. L.; RAMALHO, A. R.; ESPÍNDULA, M. C.; FERRÃO, M. A. G.; ROCHA, R. B. |
|
Afiliação: |
Universidade Federal de Rondônia; EMBRAPA; EMBRAPA; EMBRAPA; Maria Amélia Gava Ferrão, Incaper/Embrapa Café; EMBRAPA. |
|
Título: |
Characterization of gametophytic self-incompatibility of superior clones of Coffea canephora |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Genetics and Molecular Research, v. 17, n. 1, p. 1-11, 2018. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The ability to avoid self-pollination is a trait that evolved as a manner of reducing the deleterious effects of inbreeding in various allogamous plant species, including Coffea canephora. The aim of this study was to perform directed hybridizations to characterize the compatibility groups of superior C. canephora clones, since plant selection can reduce variability for this trait. For that purpose, directed hybridizations were carried out in cross arrangements using a balanced diallel without self-fertilization and without reciprocals. The genotypes evaluated were derived from open pollination and from directed hybridizations using Encapa03 as a male parent donor of pollen grains and Robusta640, Robusta 2258, and Robusta1675 as female parent receptors of pollen grains. To control the occurrence of type I and type II errors, the likelihood ratio test was used. Compatible crosses were predominant (73.7%). Compatible crosses exhibited a mean rate of fruit set of 44%, with amplitude from 26% to 77%. Of the total of 80 crosses performed, three crosses exhibited unexpected results according to the grouping proposed (P08 x P16, P09 x P15, P09 x P16). From the degree of kinship, the genealogy of the S gene and the segregation of the alleles from one generation to another was estimated. The genotypes P12, P14, and P10 exhibited the highest estimates of LOD score associated with their clustering in groups I, II, and III. These genotypes may be used as tester plants of their compatibility groups MenosThe ability to avoid self-pollination is a trait that evolved as a manner of reducing the deleterious effects of inbreeding in various allogamous plant species, including Coffea canephora. The aim of this study was to perform directed hybridizations to characterize the compatibility groups of superior C. canephora clones, since plant selection can reduce variability for this trait. For that purpose, directed hybridizations were carried out in cross arrangements using a balanced diallel without self-fertilization and without reciprocals. The genotypes evaluated were derived from open pollination and from directed hybridizations using Encapa03 as a male parent donor of pollen grains and Robusta640, Robusta 2258, and Robusta1675 as female parent receptors of pollen grains. To control the occurrence of type I and type II errors, the likelihood ratio test was used. Compatible crosses were predominant (73.7%). Compatible crosses exhibited a mean rate of fruit set of 44%, with amplitude from 26% to 77%. Of the total of 80 crosses performed, three crosses exhibited unexpected results according to the grouping proposed (P08 x P16, P09 x P15, P09 x P16). From the degree of kinship, the genealogy of the S gene and the segregation of the alleles from one generation to another was estimated. The genotypes P12, P14, and P10 exhibited the highest estimates of LOD score associated with their clustering in groups I, II, and III. These genotypes may be used as tester plants of their compatibi... Mostrar Tudo |
|
Thesaurus NAL: |
Coffea canephora; EMCAPA; Gametophytic self-incompatibility; Plant breeding; ROBUSTA; Selection. |
|
Categoria do assunto: |
G Melhoramento Genético |
|
URL: |
https://biblioteca.incaper.es.gov.br/digital/bitstream/123456789/3013/1/BRT-Artigocharacterization-of-gametophytic-selfincompatibility-of-superior-clones-of-coffea-canephora-ferrao.pdf
|
|
Marc: |
LEADER 02256naa a2200253 a 4500
001 1019314
005 2018-03-13
008 2018 bl uuuu u00u1 u #d
100 1 $aMORAES, M. S.
245 $aCharacterization of gametophytic self-incompatibility of superior clones of Coffea canephora$h[electronic resource]
260 $c2018
520 $aThe ability to avoid self-pollination is a trait that evolved as a manner of reducing the deleterious effects of inbreeding in various allogamous plant species, including Coffea canephora. The aim of this study was to perform directed hybridizations to characterize the compatibility groups of superior C. canephora clones, since plant selection can reduce variability for this trait. For that purpose, directed hybridizations were carried out in cross arrangements using a balanced diallel without self-fertilization and without reciprocals. The genotypes evaluated were derived from open pollination and from directed hybridizations using Encapa03 as a male parent donor of pollen grains and Robusta640, Robusta 2258, and Robusta1675 as female parent receptors of pollen grains. To control the occurrence of type I and type II errors, the likelihood ratio test was used. Compatible crosses were predominant (73.7%). Compatible crosses exhibited a mean rate of fruit set of 44%, with amplitude from 26% to 77%. Of the total of 80 crosses performed, three crosses exhibited unexpected results according to the grouping proposed (P08 x P16, P09 x P15, P09 x P16). From the degree of kinship, the genealogy of the S gene and the segregation of the alleles from one generation to another was estimated. The genotypes P12, P14, and P10 exhibited the highest estimates of LOD score associated with their clustering in groups I, II, and III. These genotypes may be used as tester plants of their compatibility groups
650 $aCoffea canephora
650 $aEMCAPA
650 $aGametophytic self-incompatibility
650 $aPlant breeding
650 $aROBUSTA
650 $aSelection
700 1 $aTEIXEIRA, A. L.
700 1 $aRAMALHO, A. R.
700 1 $aESPÍNDULA, M. C.
700 1 $aFERRÃO, M. A. G.
700 1 $aROCHA, R. B.
773 $tGenetics and Molecular Research$gv. 17, n. 1, p. 1-11, 2018.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Biblioteca Rui Tendinha (BRT) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
|
|
|
Registro Completo |
|
Biblioteca(s): |
Biblioteca Rui Tendinha. |
|
Data corrente: |
16/08/2023 |
|
Data da última atualização: |
16/08/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
BARRO, F. L. de S.; MOREIRA, S. O.; DOUSSEAU, S.; SANTOS, E. P. dos; SILVA, I. R. |
|
Afiliação: |
Fabiola Lacerda de Souza Barros, Incaper; Sarah Ola Moreira, Incaper; Sara Dousseau Arantes, Incaper; Erica pereira dos santos, Bolsista; Ismael Rodrigues Silva. |
|
Título: |
Genetic diversity and selection using an ideotype in a Formosa papaya population. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Revista Brasileira de Agroambiente, v. 17, p. 1 - 14. 2023. |
|
ISSN: |
1982-8470 |
|
DOI: |
https://doi.org/10.18227/1982-8470ragro.v17i00.7568 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Ideotype is a combination of traits to be sought in a breeding program, supporting the selection process. However, there must be sufficient genetic variability to be explored to ensure success in this process. Thus, this study aimed to evaluate the genetic diversity of a population of Formosa papaya from the cultivar Rubi Incaper 511, maintained by farmers, and the use of an index based on the genotype-ideotype distance for preserving the original traits of the cultivar.
A population of 250 individuals, maintained for approximately 10 years, was evaluated for 13 quantitative morpho-agronomic descriptors. Genetic divergence was estimated from the dissimilarity matrix using the mean Euclidean distance, and the dendrogram was formed using the hierarchical method of unweighted pair groups method with arithmetic averages (UPGMA). The index based on the genotype-ideotype distance was used for plant selection, with the cultivar Rubi Incaper
511 being the desired ideotype. The new means of the selected individuals and the selection differential were obtained after this selection. The individuals had fruit mass ranging from 0.73 to 1.99 kg, soluble solids content between 9.63 and 12.68 °Brix, and number of commercial fruits per plant ranging from 23 to 90. The dendrogram divided the genotypes into five groups. The selected individuals exhibited favorable selection differentials for ten traits and were closer to the selected ideotype. The management of this population by the farmers proved to be efficient in maintaining the genetic variability of the cultivar, and the selection through the index based on the genotypeideotype distance can be used to restore the phenotypic pattern of open-pollinated cultivars. MenosIdeotype is a combination of traits to be sought in a breeding program, supporting the selection process. However, there must be sufficient genetic variability to be explored to ensure success in this process. Thus, this study aimed to evaluate the genetic diversity of a population of Formosa papaya from the cultivar Rubi Incaper 511, maintained by farmers, and the use of an index based on the genotype-ideotype distance for preserving the original traits of the cultivar.
A population of 250 individuals, maintained for approximately 10 years, was evaluated for 13 quantitative morpho-agronomic descriptors. Genetic divergence was estimated from the dissimilarity matrix using the mean Euclidean distance, and the dendrogram was formed using the hierarchical method of unweighted pair groups method with arithmetic averages (UPGMA). The index based on the genotype-ideotype distance was used for plant selection, with the cultivar Rubi Incaper
511 being the desired ideotype. The new means of the selected individuals and the selection differential were obtained after this selection. The individuals had fruit mass ranging from 0.73 to 1.99 kg, soluble solids content between 9.63 and 12.68 °Brix, and number of commercial fruits per plant ranging from 23 to 90. The dendrogram divided the genotypes into five groups. The selected individuals exhibited favorable selection differentials for ten traits and were closer to the selected ideotype. The management of this population by the farmers p... Mostrar Tudo |
|
Palavras-Chave: |
Genetic gain; Genotype-ideotype distance; On-farm conservation; Openpollinated cultivar. |
|
Thesagro: |
Carica Papaya. |
|
Categoria do assunto: |
-- |
|
URL: |
https://biblioteca.incaper.es.gov.br/digital/bitstream/item/4471/1/formosapapaya.pdf
|
|
Marc: |
LEADER 02521naa a2200253 a 4500
001 1025039
005 2023-08-16
008 2023 bl uuuu u00u1 u #d
022 $a1982-8470
024 7 $ahttps://doi.org/10.18227/1982-8470ragro.v17i00.7568$2DOI
100 1 $aBARRO, F. L. de S.
245 $aGenetic diversity and selection using an ideotype in a Formosa papaya population.$h[electronic resource]
260 $c2023
520 $aIdeotype is a combination of traits to be sought in a breeding program, supporting the selection process. However, there must be sufficient genetic variability to be explored to ensure success in this process. Thus, this study aimed to evaluate the genetic diversity of a population of Formosa papaya from the cultivar Rubi Incaper 511, maintained by farmers, and the use of an index based on the genotype-ideotype distance for preserving the original traits of the cultivar. A population of 250 individuals, maintained for approximately 10 years, was evaluated for 13 quantitative morpho-agronomic descriptors. Genetic divergence was estimated from the dissimilarity matrix using the mean Euclidean distance, and the dendrogram was formed using the hierarchical method of unweighted pair groups method with arithmetic averages (UPGMA). The index based on the genotype-ideotype distance was used for plant selection, with the cultivar Rubi Incaper 511 being the desired ideotype. The new means of the selected individuals and the selection differential were obtained after this selection. The individuals had fruit mass ranging from 0.73 to 1.99 kg, soluble solids content between 9.63 and 12.68 °Brix, and number of commercial fruits per plant ranging from 23 to 90. The dendrogram divided the genotypes into five groups. The selected individuals exhibited favorable selection differentials for ten traits and were closer to the selected ideotype. The management of this population by the farmers proved to be efficient in maintaining the genetic variability of the cultivar, and the selection through the index based on the genotypeideotype distance can be used to restore the phenotypic pattern of open-pollinated cultivars.
650 $aCarica Papaya
653 $aGenetic gain
653 $aGenotype-ideotype distance
653 $aOn-farm conservation
653 $aOpenpollinated cultivar
700 1 $aMOREIRA, S. O.
700 1 $aDOUSSEAU, S.
700 1 $aSANTOS, E. P. dos
700 1 $aSILVA, I. R.
773 $tRevista Brasileira de Agroambiente$gv. 17, p. 1 - 14. 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Biblioteca Rui Tendinha (BRT) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
