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| Registros recuperados: 40 | |
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| PACHECO, C.A.P.; CRUZ, C.D.; SANTOS, M.X.dos.. |
| The objective of the present work was to provide a methodology to study the inheritance of adptability and stability through the breakdown of Eberhart and Russel regression coeficients and regression deviations in effects due to the mean and additive genetic effects (g and g) as well dominance effects (s) of Griffing methodology, when the diallel is conducted in several environments. It was concluded that the adaptability and stability parameters are determined in the same manner as are genetic effects. So an F1 cross inherits half the general combining ability (GCA) mean effect from each parent, while the effects due to specific combinig ability (SCA) are subjecterd to the same consideration relative to S i e, they are dependent on specific combinations. |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Melhoramento; Genetica quantitativa; Breeding; Quantitative genetics. |
| Ano: 1999 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/482747 |
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| TORRES-DINI, D.; NUNES, A. C. P.; AGUIAR, A. V. de; NIKICHUK, N.; CENTURIÓN, C.; CABRERA, M.; MORAES, M. L. T.; RESENDE, M. D. V. de; SEBBENN, A. M.. |
| In Uruguay, reforestations with Eucalyptus sp. is of fundamental importance to supply paper, pulp, and wood production. This study investigates genetic, productivity, stability, and adaptability parameters in the selection of Eucalypts grandis x Eucalyptus globulus full-sib hybrid clones. The study was conducted in a clonal test, repeated in two different soils types, in Rio Negro State, Uruguay. The population was characterized phenotypically for diameter at breast height (dbh) and genotyped for SNP markers (EuCHIP60K chip). Mean dbh was similar between sites and the genotype?environment interaction was simple. We found high genotype correlation in clone performance between environments (0.708), indicating the possibility of selecting the same clones for... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Genética de populações; Genética quantitativa; Forest breeding; Gene markers; Eucalipto; Híbrido; Melhoramento genético vegetal; Eucalyptus; Hybrids; Plant breeding; Population genetics; Quantitative genetics. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080981 |
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| Bison,Odair; Ramalho,Magno Antonio Patto; Rezende,Gabriel Dehon Sampaio Peçanha; Aguiar,Aurélio Mendes; Resende,Marcos Deon Vilela de. |
| In Brazil, eucalyptus breeding programs for cellulose production has used two species, Eucalyptus grandis and Eucalyptus urophylla. Nevertheless, it would be useful to introgress alleles from other species to improve wood quality and volume. The objective of this research was to evaluate the hybrid potential of elite clones of E. grandis and E. urophylla from the Aracruz Celulose Company S. A. with Eucalyptus globulus clones. To do so, six elite clones were crossed with ten E. globulus clones in a half-diallel mating design. The resulting hybrid combinations as well as the four check clones were evaluated in randomized complete block experiments with single plant plots and 40 replicates from September to October 2001 at three Brazilian sites, Aracruz and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diallel; Eucalyptus breeding; Hybrids; Quantitative genetics; Wood quality. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300019 |
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| ABREU, G. B.; FERREIRA, D. F.; RAMALHO, M. A. P.; TOLEDO, F. H. R. B.; BUENO FILHO, J. S. de S.. |
| Intrapopulation recurrent selection (IRS) has proven to be a promising breeding method in eucalyptus, mainly through being easier to carry out when compared to reciprocal recurrent selection (RRS). However, the recombination strategies in IRS that have not yet been compared. Thus, the purpose of this study was to verify the efficiency of different recombination methods in IRS. To do so, computer simulation was used considering different heritabilities (0.1, 0.5, 1.0), different initial allelic frequencies (0.2, 0.8) and allelic interactions without dominance and with complete dominance. The initial population consisted of 1000 individuals, which were selected at random for the beginning of cycle zero. These individuals were interbred two by two. Three... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Genética quantitativa; Estratégia de reprodução; Ganho genético; Melhoramento vegetal; Seleção; Eucalipto; Quantitative genetics; Método Monte Carlo. |
| Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/963390 |
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| ABREU, G. B.; TOLEDO, M. M.; CAVALLARI, M. M.; ARAUJO, J. R. G.; RODRIGUES, A. A. C.; MELO, L. G. de L.; NEVES JUNIOR, A. C. V.. |
| This study aimed to estimate genetic parameters of Turiaçu pineapple clones using mixed models; and estimate genetic correlation coefficient between traits, to provide important information to breeding programs. For this, 19 pineapple plants were visually selected and its slips were collected and planted in a single environment and nine traits were evaluated. The genetic parameters of most evaluated traits presented significant differences between the 19 clones. Some traits, such as Fusarium wilt resistance, showed high magnitudes of heritability. Clones did not differ in relation to total titratable acidity (TTA) and total soluble solids (TSS). However, these traits, which have implications to fruit quality, showed to be negatively correlated to fruit... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Quantitative genetics; Plant breeding; Ananas comosus. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080540 |
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| ABREU, G. B.; TOLEDO, M. M.; CAVALLARI, M. M.; ARAUJO, J. R. G.; RODRIGUES, A. A. C.; MELO, L. G. de L.; NEVES JUNIOR, A. C. V.. |
| This study aimed to estimate genetic parameters of Turiaçu pineapple clones using mixed models; and estimate genetic correlation coefficient between traits, to provide important information to breeding programs. For this, 19 pineapple plants were visually selected and its slips were collected and planted in a single environment and nine traits were evaluated. The genetic parameters of most evaluated traits presented significant differences between the 19 clones. Some traits, such as Fusarium wilt resistance, showed high magnitudes of heritability. Clones did not differ in relation to total titratable acidity (TTA) and total soluble solids (TSS). However, these traits, which have implications to fruit quality, showed to be negatively correlated to fruit... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Quantitative genetics; Plant breeding; Ananas comosus; Abacaxi de turiaçu; Abacaxi. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080984 |
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| HARTWIG, I.; CARVALHO, F. I. F. de; OLIVEIRA, A. C. de; VIEIRA, E. A.; SILVA, J. A. G. da; BERTAN, I.; RIBEIRO, G.; FINATTO, T.; REIS, C. E. S. dos; BUSATO, C. C.. |
| 2007 |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Trigo; Genética quantitativa; Herdabilidade; Triticum aestivum; Quantitative genetics; Heritability; Wheat. |
| Ano: 2007 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/559214 |
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| DAVID,JEAN R.. |
| Developmental biology and evolutionary biology are both mature integrative disciplines which started in the 19th century and then followed parallel and independent scientific pathways. Recently, a genetical component has stepped into both disciplines (developmental genetics and evolutionary genetics) pointing out the need for future convergent maturation. Indeed, the Evo-Devo approach is becoming popular among developmental biologists, based on the facts that distant groups share a common ancestry, that precise phylogenies can be worked out and that homologous genes often play similar roles during the development of very different organisms. In this essay, I try to show that the real future of Evo-Devo thinking is still broader. The evolutionary theory is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quantitative genetics; Multicellularity; Analogy; Homology; Sexual reproduction. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652001000300008 |
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| Normand, Julien; Ernande, Bruno; Boudry, Pierre. |
| Today, triploidy is the most common method used to genetically improve marine bivalve aquaculture production. In the Pacific oyster Crassostrea gigas, triploidy affects many traits. The most proeminent one is reproductive effort, which is greatly reduced compared to diploids. The combined effects of physiological trade-offs between survival, growth and reproduction together with the reduction of reproductive effort in triploids explains the global enhancement of yield observed. However, the sterility of triploid oysters is only partial and some triploid individuals can show normal gametogenesis (i.e. similar to diploids), especially under warm conditions. In diploid oysters, the heritability of reproductive effort has been shown to be relatively low, but a... |
| Tipo: Text |
Palavras-chave: Parentage analysis; Triploidy; Oyster; Quantitative genetics; Gametogenesis. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/acte-4525.pdf |
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| MARTINS, E. S.; PINTO JÚNIOR, R. A.; ABREU, A. F. B.; RAMALHO, M. A. P.. |
| This article aimed to study the genetic control of some flowers and pod set of common bean and to verify if its estimate varies with environmental conditions and gene pool. A complete diallel was used among six lines, but no reciprocal ones. The treatments were evaluated in three harvests/generations - F2, F3, and F4 - in 2015/2016, in a randomized complete block design with four replications. The plot consisted of 3 lines with 4 m. In the center line, a receptacle to collect the aborted flowers/pods was placed. The traits considered were the number of flowers/plant (N), the percentage of pod set (V), and the production of grain/plant (W). A joint diallel analysis was performed, and the correlations between N, V, and W were estimated. N was 31.9 on... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Grain production; Feijão; Phaseolus vulgaris; Melhoramento genético vegetal; Plant breeding; Diallel analysis; Quantitative genetics; Gene pool; Beans. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085739 |
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| Registros recuperados: 40 | |
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